* Starting grub 2 from grub legacy? @ 2008-02-13 16:19 Arthur Marsh 2008-02-13 16:41 ` ardoRic 0 siblings, 1 reply; 16+ messages in thread From: Arthur Marsh @ 2008-02-13 16:19 UTC (permalink / raw) To: grub-devel Hi, I am running Debian unstable on i386 (Pentium II) and have: grub-pc 1.96+20080210-1 installed, although the grub menu I am presented with is from grub-legacy. It used to be possible to boot grub 2 from a menu entry in /boot/grub/menu.lst of grub-legacy but that entry was removed by a recent upgrade and I didn't save a copy )-:. What entry should be put in grub-legacy's menu.lst to present the option to run grub 2? Regards, Arthur. ^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: Starting grub 2 from grub legacy? 2008-02-13 16:19 Starting grub 2 from grub legacy? Arthur Marsh @ 2008-02-13 16:41 ` ardoRic 2008-02-13 18:50 ` ardoRic 0 siblings, 1 reply; 16+ messages in thread From: ardoRic @ 2008-02-13 16:41 UTC (permalink / raw) To: The development of GRUB 2 Hello there, running 'dpkg-reconfigure grub-pc' doesnt get you that option back ? Ricardo Silva On Feb 13, 2008 4:19 PM, Arthur Marsh <arthur.marsh@internode.on.net> wrote: > Hi, I am running Debian unstable on i386 (Pentium II) and have: > > grub-pc 1.96+20080210-1 installed, although the grub menu I am presented > with is from grub-legacy. > > It used to be possible to boot grub 2 from a menu entry in > /boot/grub/menu.lst of grub-legacy but that entry was removed by a > recent upgrade and I didn't save a copy )-:. > > What entry should be put in grub-legacy's menu.lst to present the option > to run grub 2? > > Regards, > > Arthur. > > > > _______________________________________________ > Grub-devel mailing list > Grub-devel@gnu.org > http://lists.gnu.org/mailman/listinfo/grub-devel > ^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: Starting grub 2 from grub legacy? 2008-02-13 16:41 ` ardoRic @ 2008-02-13 18:50 ` ardoRic 2008-02-14 18:28 ` Arthur Marsh 2008-02-18 13:42 ` Arthur Marsh 0 siblings, 2 replies; 16+ messages in thread From: ardoRic @ 2008-02-13 18:50 UTC (permalink / raw) To: The development of GRUB 2 Hi. I tried it and didn't exactly work. the grub entry you are looking for is: title Chainload Grub2 root (hd0,0) # or whatever your root is kernel /boot/grub/core.img savedefault This is what i had before commenting it out, and i tried it out and works. Regards, Ricardo Silva On Feb 13, 2008 4:41 PM, ardoRic <ardoric@gmail.com> wrote: > Hello there, > > running 'dpkg-reconfigure grub-pc' doesnt get you that option back ? > > Ricardo Silva > > > On Feb 13, 2008 4:19 PM, Arthur Marsh <arthur.marsh@internode.on.net> wrote: > > Hi, I am running Debian unstable on i386 (Pentium II) and have: > > > > grub-pc 1.96+20080210-1 installed, although the grub menu I am presented > > with is from grub-legacy. > > > > It used to be possible to boot grub 2 from a menu entry in > > /boot/grub/menu.lst of grub-legacy but that entry was removed by a > > recent upgrade and I didn't save a copy )-:. > > > > What entry should be put in grub-legacy's menu.lst to present the option > > to run grub 2? > > > > Regards, > > > > Arthur. > > > > > > > > _______________________________________________ > > Grub-devel mailing list > > Grub-devel@gnu.org > > http://lists.gnu.org/mailman/listinfo/grub-devel > > > ^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: Starting grub 2 from grub legacy? 2008-02-13 18:50 ` ardoRic @ 2008-02-14 18:28 ` Arthur Marsh 2008-02-18 13:42 ` Arthur Marsh 1 sibling, 0 replies; 16+ messages in thread From: Arthur Marsh @ 2008-02-14 18:28 UTC (permalink / raw) To: grub-devel ardoRic wrote, on 2008-02-14 05:20: > Hi. > > I tried it and didn't exactly work. > > the grub entry you are looking for is: > > title Chainload Grub2 > root (hd0,0) # or whatever your root is > kernel /boot/grub/core.img > savedefault > > This is what i had before commenting it out, and i tried it out and works. > > Regards, > Ricardo Silva > > On Feb 13, 2008 4:41 PM, ardoRic <ardoric@gmail.com> wrote: >> Hello there, >> >> running 'dpkg-reconfigure grub-pc' doesnt get you that option back ? >> >> Ricardo Silva I have in /boot/grub/menu.lst for grub-legacy: [edit] title Debian GNU/Linux, kernel 2.6.23 (recovery mode) root (hd0,4) kernel /boot/vmlinuz-2.6.23 root=/dev/hda5 ro noisapnp single initrd /boot/initrd.img-2.6.23 savedefault title Chainload Grub2 root (hd0,4) # or whatever your root is kernel /boot/grub/core.img savedefault [end quote] and I get a looping invalid syntax error when I select the "Chainload Grub2" option on the grub-legacy menu, but I can load kernels like the one listed above alright from grub-legacy. Could the: # or whatever your root is on the same line as: root (hd0,4) be the problem? ls /boot/grub acorn.mod gfxterm.mod normal.mod affs.mod gpt.mod pc.mod amiga.mod grub.cfg play.mod apple.mod gzio.mod pxeboot.img bitmap.mod halt.mod raid.mod blocklist.mod hello.mod reboot.mod boot.img help.mod reiserfs_stage1_5 boot.mod hfs.mod search.mod cat.mod hfsplus.mod sfs.mod _chain.mod iso9660.mod stage1 chain.mod iso9660_stage1_5 stage2 cmp.mod jfs.mod sun.mod command.lst jfs_stage1_5 terminal.mod configfile.mod kernel.img terminfo.mod core.img _linux.mod test.mod default linux.mod tga.mod device.map loopback.mod ufs2_stage1_5 diskboot.img ls.mod ufs.mod e2fs_stage1_5 lvm.mod vbeinfo.mod elf.mod menu.lst vbe.mod ext2.mod menu.lst~ vbetest.mod fat.mod menu.lst_backup_by_grub2_prerm video.mod fat_stage1_5 minix.mod videotest.mod ffs_stage1_5 minix_stage1_5 vstafs_stage1_5 font.mod moddep.lst xfs.mod fshelp.mod _multiboot.mod xfs_stage1_5 fs.lst multiboot.mod dpkg -l grub-pc ... ||/ Name Version Description +++-==============-==============-============================================ ii grub-pc 1.96+20080213- GRand Unified Bootloader, version 2 (PC/BIOS ^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: Starting grub 2 from grub legacy? 2008-02-13 18:50 ` ardoRic 2008-02-14 18:28 ` Arthur Marsh @ 2008-02-18 13:42 ` Arthur Marsh 2008-02-18 13:55 ` Arthur Marsh ` (2 more replies) 1 sibling, 3 replies; 16+ messages in thread From: Arthur Marsh @ 2008-02-18 13:42 UTC (permalink / raw) To: grub-devel ardoRic wrote, on 14/02/08 05:20: > Hi. > > I tried it and didn't exactly work. > > the grub entry you are looking for is: > > title Chainload Grub2 > root (hd0,0) # or whatever your root is > kernel /boot/grub/core.img > savedefault > > This is what i had before commenting it out, and i tried it out and works. > This doesn't work for me )-: To reiterate, I installed grub-pc with an existing grub-legacy on Debian unstable on a Pentium II machine: # ls -al /boot/grub total 676 drwxr-xr-x 2 root root 4096 2008-02-18 22:41 . drwxr-xr-x 3 root root 4096 2008-02-13 17:02 .. -rw-r--r-- 1 root root 2168 2007-05-08 21:27 acorn.mod -rw-r--r-- 1 root root 4756 2007-05-08 21:27 affs.mod -rw-r--r-- 1 root root 2512 2007-05-08 21:27 amiga.mod -rw-r--r-- 1 root root 2652 2007-05-08 21:27 apple.mod -rw-r--r-- 1 root root 2512 2007-05-08 21:27 bitmap.mod -rw-r--r-- 1 root root 2040 2007-05-08 21:27 blocklist.mod -rw-r--r-- 1 root root 512 2007-05-08 21:27 boot.img -rw-r--r-- 1 root root 1276 2007-05-08 21:27 boot.mod -rw-r--r-- 1 root root 1800 2007-05-08 21:27 cat.mod -rw-r--r-- 1 root root 2232 2007-05-08 21:27 _chain.mod -rw-r--r-- 1 root root 1640 2007-05-08 21:27 chain.mod -rw-r--r-- 1 root root 2132 2007-05-08 21:27 cmp.mod -rw-r--r-- 1 root root 515 2007-05-08 21:27 command.lst -rw-r--r-- 1 root root 1816 2007-05-08 21:27 configfile.mod -rw-r--r-- 1 root root 27193 2007-05-08 21:27 core.img -rw-r--r-- 1 root root 4 2006-06-14 15:06 default -rw-r--r-- 1 root root 45 2008-01-08 18:01 device.map -rw-r--r-- 1 root root 512 2007-05-08 21:27 diskboot.img -rw-r--r-- 1 root root 8000 2004-06-23 17:01 e2fs_stage1_5 -rw-r--r-- 1 root root 4440 2007-05-08 21:27 elf.mod -rw-r--r-- 1 root root 4184 2007-05-08 21:27 ext2.mod -rw-r--r-- 1 root root 4816 2007-05-08 21:27 fat.mod -rw-r--r-- 1 root root 7728 2004-06-23 17:01 fat_stage1_5 -rw-r--r-- 1 root root 7040 2004-06-23 17:01 ffs_stage1_5 -rw-r--r-- 1 root root 2492 2007-05-08 21:27 font.mod -rw-r--r-- 1 root root 2504 2007-05-08 21:27 fshelp.mod -rw-r--r-- 1 root root 56 2007-05-08 21:27 fs.lst -rw-r--r-- 1 root root 6628 2007-05-08 21:27 gfxterm.mod -rw-r--r-- 1 root root 2744 2007-05-08 21:27 gpt.mod -r--r--r-- 1 root root 1794 2008-02-18 22:41 grub.cfg -rw-r--r-- 1 root root 8148 2007-05-08 21:27 gzio.mod -rw-r--r-- 1 root root 1452 2007-05-08 21:27 halt.mod -rw-r--r-- 1 root root 1200 2007-05-08 21:27 hello.mod -rw-r--r-- 1 root root 1904 2007-05-08 21:27 help.mod -rw-r--r-- 1 root root 6416 2007-05-08 21:27 hfs.mod -rw-r--r-- 1 root root 6312 2007-05-08 21:27 hfsplus.mod -rw-r--r-- 1 root root 5108 2007-05-08 21:27 iso9660.mod -rw-r--r-- 1 root root 7008 2004-06-23 17:01 iso9660_stage1_5 -rw-r--r-- 1 root root 5056 2007-05-08 21:27 jfs.mod -rw-r--r-- 1 root root 8544 2004-06-23 17:01 jfs_stage1_5 -rw-r--r-- 1 root root 31256 2007-05-08 21:27 kernel.img -rw-r--r-- 1 root root 4788 2007-05-08 21:27 _linux.mod -rw-r--r-- 1 root root 1492 2007-05-08 21:27 linux.mod -rw-r--r-- 1 root root 3124 2007-05-08 21:27 loopback.mod -rw-r--r-- 1 root root 3780 2007-05-08 21:27 ls.mod -rw-r--r-- 1 root root 5044 2007-05-08 21:27 lvm.mod -rw-r--r-- 1 root root 5026 2008-02-18 23:14 menu.lst -rw-r--r-- 1 root root 4973 2008-02-18 22:32 menu.lst~ -rw-r--r-- 1 root root 4973 2008-02-18 22:32 menu.lst_backup_by_grub2_prerm -rw-r--r-- 1 root root 4240 2007-05-08 21:27 minix.mod -rw-r--r-- 1 root root 7232 2004-06-23 17:01 minix_stage1_5 -rw-r--r-- 1 root root 673 2007-05-08 21:27 moddep.lst -rw-r--r-- 1 root root 5092 2007-05-08 21:27 _multiboot.mod -rw-r--r-- 1 root root 1544 2007-05-08 21:27 multiboot.mod -rw-r--r-- 1 root root 39376 2007-05-08 21:27 normal.mod -rw-r--r-- 1 root root 3288 2007-05-08 21:27 pc.mod -rw-r--r-- 1 root root 2152 2007-05-08 21:27 play.mod -rw-r--r-- 1 root root 1024 2007-05-08 21:27 pxeboot.img -rw-r--r-- 1 root root 4212 2007-05-08 21:27 raid.mod -rw-r--r-- 1 root root 1184 2007-05-08 21:27 reboot.mod -rw-r--r-- 1 root root 9472 2004-06-23 17:01 reiserfs_stage1_5 -rw-r--r-- 1 root root 3080 2007-05-08 21:27 search.mod -rw-r--r-- 1 root root 4276 2007-05-08 21:27 sfs.mod -rw-r--r-- 1 root root 512 2004-06-23 17:01 stage1 -rw-r--r-- 1 root root 107250 2004-06-23 17:01 stage2 -rw-r--r-- 1 root root 2468 2007-05-08 21:27 sun.mod -rw-r--r-- 1 root root 1792 2007-05-08 21:27 terminal.mod -rw-r--r-- 1 root root 6952 2007-05-08 21:27 terminfo.mod -rw-r--r-- 1 root root 1580 2007-05-08 21:27 test.mod -rw-r--r-- 1 root root 2868 2007-05-08 21:27 tga.mod -rw-r--r-- 1 root root 7296 2004-06-23 17:01 ufs2_stage1_5 -rw-r--r-- 1 root root 4640 2007-05-08 21:27 ufs.mod -rw-r--r-- 1 root root 2112 2007-05-08 21:27 vbeinfo.mod -rw-r--r-- 1 root root 13860 2007-05-08 21:27 vbe.mod -rw-r--r-- 1 root root 2988 2007-05-08 21:27 vbetest.mod -rw-r--r-- 1 root root 3736 2007-05-08 21:27 video.mod -rw-r--r-- 1 root root 2700 2007-05-08 21:27 videotest.mod -rw-r--r-- 1 root root 6688 2004-06-23 17:01 vstafs_stage1_5 -rw-r--r-- 1 root root 6828 2007-05-08 21:27 xfs.mod -rw-r--r-- 1 root root 9512 2004-06-23 17:01 xfs_stage1_5 # ls -al /usr/lib/grub/i386-pc total 532 drwxr-xr-x 2 root root 4096 2008-02-18 22:40 . drwxr-xr-x 3 root root 4096 2008-02-18 22:40 .. -rw-r--r-- 1 root root 2160 2008-02-17 10:58 acorn.mod -rw-r--r-- 1 root root 4792 2008-02-17 10:58 affs.mod -rw-r--r-- 1 root root 2492 2008-02-17 10:58 amiga.mod -rw-r--r-- 1 root root 2612 2008-02-17 10:58 apple.mod -rw-r--r-- 1 root root 4572 2008-02-17 10:58 ata.mod -rw-r--r-- 1 root root 4060 2008-02-17 10:58 biosdisk.mod -rw-r--r-- 1 root root 2516 2008-02-17 10:58 bitmap.mod -rw-r--r-- 1 root root 2064 2008-02-17 10:58 blocklist.mod -rw-r--r-- 1 root root 512 2008-02-17 10:58 boot.img -rw-r--r-- 1 root root 1276 2008-02-17 10:58 boot.mod -rw-r--r-- 1 root root 1808 2008-02-17 10:58 cat.mod -rw-r--r-- 1 root root 512 2008-02-17 10:58 cdboot.img -rw-r--r-- 1 root root 2340 2008-02-17 10:58 _chain.mod -rw-r--r-- 1 root root 1624 2008-02-17 10:58 chain.mod -rw-r--r-- 1 root root 2128 2008-02-17 10:58 cmp.mod -rw-r--r-- 1 root root 634 2008-02-17 10:58 command.lst -rw-r--r-- 1 root root 1816 2008-02-17 10:58 configfile.mod -rw-r--r-- 1 root root 3056 2008-02-17 10:58 cpio.mod -rw-r--r-- 1 root root 1504 2008-02-17 10:58 cpuid.mod -rw-r--r-- 1 root root 512 2008-02-17 10:58 diskboot.img -rw-r--r-- 1 root root 1904 2008-02-17 10:58 echo.mod -rw-r--r-- 1 root root 4420 2008-02-17 10:58 elf.mod -rw-r--r-- 1 root root 4180 2008-02-17 10:58 ext2.mod -rw-r--r-- 1 root root 4816 2008-02-17 10:58 fat.mod -rw-r--r-- 1 root root 2532 2008-02-17 10:58 font.mod -rw-r--r-- 1 root root 2488 2008-02-17 10:58 fshelp.mod -rw-r--r-- 1 root root 75 2008-02-17 10:58 fs.lst -rw-r--r-- 1 root root 8472 2008-02-17 10:58 gfxterm.mod -rw-r--r-- 1 root root 2720 2008-02-17 10:58 gpt.mod -rw-r--r-- 1 root root 8224 2008-02-17 10:58 gzio.mod -rw-r--r-- 1 root root 1440 2008-02-17 10:58 halt.mod -rw-r--r-- 1 root root 1200 2008-02-17 10:58 hello.mod -rw-r--r-- 1 root root 1912 2008-02-17 10:58 help.mod -rw-r--r-- 1 root root 2524 2008-02-17 10:58 hexdump.mod -rw-r--r-- 1 root root 6368 2008-02-17 10:58 hfs.mod -rw-r--r-- 1 root root 6244 2008-02-17 10:58 hfsplus.mod -rw-r--r-- 1 root root 5108 2008-02-17 10:58 iso9660.mod -rw-r--r-- 1 root root 5092 2008-02-17 10:58 jfs.mod -rw-r--r-- 1 root root 6076 2008-02-17 10:58 jpeg.mod -rw-r--r-- 1 root root 30324 2008-02-17 10:58 kernel.img -rw-r--r-- 1 root root 4768 2008-02-17 10:58 _linux.mod -rw-r--r-- 1 root root 1492 2008-02-17 10:58 linux.mod -rw-r--r-- 1 root root 1024 2008-02-17 10:58 lnxboot.img -rw-r--r-- 1 root root 3104 2008-02-17 10:58 loopback.mod -rw-r--r-- 1 root root 3752 2008-02-17 10:58 ls.mod -rw-r--r-- 1 root root 4068 2008-02-17 10:58 lspci.mod -rw-r--r-- 1 root root 5016 2008-02-17 10:58 lvm.mod -rw-r--r-- 1 root root 2128 2008-02-17 10:58 memdisk.mod -rw-r--r-- 1 root root 4320 2008-02-17 10:58 minix.mod -rw-r--r-- 1 root root 918 2008-02-17 10:58 moddep.lst -rw-r--r-- 1 root root 11360 2008-02-17 10:58 _multiboot.mod -rw-r--r-- 1 root root 1572 2008-02-17 10:58 multiboot.mod -rw-r--r-- 1 root root 40884 2008-02-17 10:58 normal.mod -rw-r--r-- 1 root root 3340 2008-02-17 10:58 ntfscomp.mod -rw-r--r-- 1 root root 8300 2008-02-17 10:58 ntfs.mod -rw-r--r-- 1 root root 852 2008-02-17 10:58 pci.mod -rw-r--r-- 1 root root 3216 2008-02-17 10:58 pc.mod -rw-r--r-- 1 root root 2112 2008-02-17 10:58 play.mod -rw-r--r-- 1 root root 6100 2008-02-17 10:58 png.mod -rw-r--r-- 1 root root 1024 2008-02-17 10:58 pxeboot.img -rw-r--r-- 1 root root 5096 2008-02-17 10:58 raid.mod -rw-r--r-- 1 root root 1604 2008-02-17 10:58 read.mod -rw-r--r-- 1 root root 1184 2008-02-17 10:58 reboot.mod -rw-r--r-- 1 root root 9508 2008-02-17 10:58 reiserfs.mod -rw-r--r-- 1 root root 3068 2008-02-17 10:58 search.mod -rw-r--r-- 1 root root 5544 2008-02-17 10:58 serial.mod -rw-r--r-- 1 root root 4360 2008-02-17 10:58 sfs.mod -rw-r--r-- 1 root root 2048 2008-02-17 10:58 sleep.mod -rw-r--r-- 1 root root 2464 2008-02-17 10:58 sun.mod -rw-r--r-- 1 root root 1792 2008-02-17 10:58 terminal.mod -rw-r--r-- 1 root root 6888 2008-02-17 10:58 terminfo.mod -rw-r--r-- 1 root root 1580 2008-02-17 10:58 test.mod -rw-r--r-- 1 root root 2856 2008-02-17 10:58 tga.mod -rw-r--r-- 1 root root 5056 2008-02-17 10:58 ufs.mod -rw-r--r-- 1 root root 3021 2008-02-17 10:58 update-grub_lib -rw-r--r-- 1 root root 2112 2008-02-17 10:58 vbeinfo.mod -rw-r--r-- 1 root root 13996 2008-02-17 10:58 vbe.mod -rw-r--r-- 1 root root 2988 2008-02-17 10:58 vbetest.mod -rw-r--r-- 1 root root 3792 2008-02-17 10:58 vga.mod -rw-r--r-- 1 root root 3996 2008-02-17 10:58 video.mod -rw-r--r-- 1 root root 2696 2008-02-17 10:58 videotest.mod -rw-r--r-- 1 root root 7384 2008-02-17 10:58 xfs.mod What should be the correct lines in /boot/grub/menu.lst to start grub 2 from grub legacy? Arthur. ^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: Starting grub 2 from grub legacy? 2008-02-18 13:42 ` Arthur Marsh @ 2008-02-18 13:55 ` Arthur Marsh 2008-02-18 14:08 ` Pavel Roskin 2008-02-19 0:57 ` George Lengel 2 siblings, 0 replies; 16+ messages in thread From: Arthur Marsh @ 2008-02-18 13:55 UTC (permalink / raw) To: grub-devel Arthur Marsh wrote, on 2008-02-19 00:12: See also: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=466389 ^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: Starting grub 2 from grub legacy? 2008-02-18 13:42 ` Arthur Marsh 2008-02-18 13:55 ` Arthur Marsh @ 2008-02-18 14:08 ` Pavel Roskin 2008-02-19 0:57 ` George Lengel 2 siblings, 0 replies; 16+ messages in thread From: Pavel Roskin @ 2008-02-18 14:08 UTC (permalink / raw) To: The development of GRUB 2 On Tue, 2008-02-19 at 00:12 +1030, Arthur Marsh wrote: > ardoRic wrote, on 14/02/08 05:20: > > Hi. > > > > I tried it and didn't exactly work. > > > > the grub entry you are looking for is: > > > > title Chainload Grub2 > > root (hd0,0) # or whatever your root is > > kernel /boot/grub/core.img > > savedefault > > > > This is what i had before commenting it out, and i tried it out and works. > > > > This doesn't work for me )-: For what it's worth, I cannot load core.img even from the current GRUB2: grub> kernel /boot/grub/core.img error: unknown ELF class Yet core.img appears to have a valid multiboot header: # mbchk /boot/grub/core.img /boot/grub/core.img: The Multiboot header is found at the offset 592. /boot/grub/core.img: Page alignment is turned off. /boot/grub/core.img: Memory information is turned off. /boot/grub/core.img: Address fields is turned on. /boot/grub/core.img: All checks passed. -- Regards, Pavel Roskin ^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: Starting grub 2 from grub legacy? 2008-02-18 13:42 ` Arthur Marsh 2008-02-18 13:55 ` Arthur Marsh 2008-02-18 14:08 ` Pavel Roskin @ 2008-02-19 0:57 ` George Lengel 2008-02-19 6:25 ` Pavel Roskin 2 siblings, 1 reply; 16+ messages in thread From: George Lengel @ 2008-02-19 0:57 UTC (permalink / raw) To: The development of GRUB 2 > > What should be the correct lines in /boot/grub/menu.lst to start grub > 2 from grub legacy? I installed this about two weeks ago and this was the entry that was added for me by the process. title Grb2 chainload root (hd2,6) kernel /boot/grub/core.img boot savedefault ^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: Starting grub 2 from grub legacy? 2008-02-19 0:57 ` George Lengel @ 2008-02-19 6:25 ` Pavel Roskin 2008-02-19 7:13 ` Robert Millan 2008-02-19 7:14 ` Bean 0 siblings, 2 replies; 16+ messages in thread From: Pavel Roskin @ 2008-02-19 6:25 UTC (permalink / raw) To: grub-devel Quoting George Lengel <lengel1@comcast.net>: >> What should be the correct lines in /boot/grub/menu.lst to start >> grub 2 from grub legacy? > > I installed this about two weeks ago and this was the entry that was > added for me by the process. > > > title Grb2 chainload > root (hd2,6) > kernel /boot/grub/core.img > boot > savedefault Yes, I installed both GRUB 1 and GRUB 2, and loading core.img from GRUB 1 is working fine. But GRUB 2 cannot load its own core.img, and neither can it load stage2: grub> multiboot /boot/grub/core.img error: unknown ELF class grub> multiboot /boot/grub/stage2 alloc magic is broken at 0x93c50 Aborted. Press any key to exit. That's current CVS versions of GRUB 1 and GRUB 2. Compiled on Fedora 8 x86_64 with all updates. -- Regards, Pavel Roskin ^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: Starting grub 2 from grub legacy? 2008-02-19 6:25 ` Pavel Roskin @ 2008-02-19 7:13 ` Robert Millan 2008-02-19 7:14 ` Bean 1 sibling, 0 replies; 16+ messages in thread From: Robert Millan @ 2008-02-19 7:13 UTC (permalink / raw) To: The development of GRUB 2 On Tue, Feb 19, 2008 at 01:25:52AM -0500, Pavel Roskin wrote: > > Yes, I installed both GRUB 1 and GRUB 2, and loading core.img from > GRUB 1 is working fine. But GRUB 2 cannot load its own core.img, and > neither can it load stage2: > > grub> multiboot /boot/grub/core.img > error: unknown ELF class I think Bean made a patch to fix that (the same that implements *BSD boot). -- Robert Millan <GPLv2> I know my rights; I want my phone call! <DRM> What use is a phone call… if you are unable to speak? (as seen on /.) ^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: Starting grub 2 from grub legacy? 2008-02-19 6:25 ` Pavel Roskin 2008-02-19 7:13 ` Robert Millan @ 2008-02-19 7:14 ` Bean 2008-02-19 18:19 ` Pavel Roskin 1 sibling, 1 reply; 16+ messages in thread From: Bean @ 2008-02-19 7:14 UTC (permalink / raw) To: The development of GRUB 2 On Feb 19, 2008 2:25 PM, Pavel Roskin <proski@gnu.org> wrote: > Quoting George Lengel <lengel1@comcast.net>: > > >> What should be the correct lines in /boot/grub/menu.lst to start > >> grub 2 from grub legacy? > > > > I installed this about two weeks ago and this was the entry that was > > added for me by the process. > > > > > > title Grb2 chainload > > root (hd2,6) > > kernel /boot/grub/core.img > > boot > > savedefault > > Yes, I installed both GRUB 1 and GRUB 2, and loading core.img from > GRUB 1 is working fine. But GRUB 2 cannot load its own core.img, and > neither can it load stage2: > > grub> multiboot /boot/grub/core.img > error: unknown ELF class That's because core.img is a.out format multiboot kernel, but the current multiboot loader can only handle elf format. My bsd patch add a.out support for multiboot. with that, you can load core.img successfully. > grub> multiboot /boot/grub/stage2 > alloc magic is broken at 0x93c50 > Aborted. Press any key to exit. stage2 is not multiboot format, actually, it's not of any format. The alloc magic broken is caused by a bug in the multiboot loader, my bsd also fit this, it will print the error message: "currently only ELF is supported" however, it's still possible to load GRUB Legacy with my grubutil package. It contain several header file which you can use to load various boot loader from any loader that support linux kernel. For example, the header for grub legacy is ldgrub.bin, you can use it like this: linux ldgrub.bin initrd stage2 -- Bean ^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: Starting grub 2 from grub legacy? 2008-02-19 7:14 ` Bean @ 2008-02-19 18:19 ` Pavel Roskin 2008-02-19 18:33 ` Bean 0 siblings, 1 reply; 16+ messages in thread From: Pavel Roskin @ 2008-02-19 18:19 UTC (permalink / raw) To: The development of GRUB 2 On Tue, 2008-02-19 at 15:14 +0800, Bean wrote: > That's because core.img is a.out format multiboot kernel, but the > current multiboot loader can only handle elf format. My bsd patch add > a.out support for multiboot. with that, you can load core.img > successfully. It's working, thanks! Just one minor issue - the new core.img is confused about the root device: Welcome to GRUB! error: unknown device Entering into rescue mode... grub rescue> set prefix=(fd0,1,a)/boot/grub root=fd0,1,a grub rescue> That's qemu with one hard drive and no floppies. By the way, "Entering into rescue mode" should be "Entering rescue mode". > > grub> multiboot /boot/grub/stage2 > > alloc magic is broken at 0x93c50 > > Aborted. Press any key to exit. > > stage2 is not multiboot format, actually, it's not of any format. The > alloc magic broken is caused by a bug in the multiboot loader, my bsd > also fit this, it will print the error message: "currently only ELF is > supported" Yes, it's better now. Actually, GRUB 2 modules still confuse multiboot. Loading _bsd.mod or affs.mod would cause GRUB to hand. But "multiboot configfile.mod" actually crashed qemu 0.9.1 with "qemu: fatal: triple fault"! > however, it's still possible to load GRUB Legacy with my grubutil > package. It contain several header file which you can use to load > various boot loader from any loader that support linux kernel. For > example, the header for grub legacy is ldgrub.bin, you can use it like > this: > > linux ldgrub.bin > initrd stage2 I'm thinking maybe the final GRUB 1 should make stage2 multiboot compliant, if we are going to release it one day. -- Regards, Pavel Roskin ^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: Starting grub 2 from grub legacy? 2008-02-19 18:19 ` Pavel Roskin @ 2008-02-19 18:33 ` Bean 2008-02-19 20:56 ` Pavel Roskin 0 siblings, 1 reply; 16+ messages in thread From: Bean @ 2008-02-19 18:33 UTC (permalink / raw) To: The development of GRUB 2 On Feb 20, 2008 2:19 AM, Pavel Roskin <proski@gnu.org> wrote: > On Tue, 2008-02-19 at 15:14 +0800, Bean wrote: > > > That's because core.img is a.out format multiboot kernel, but the > > current multiboot loader can only handle elf format. My bsd patch add > > a.out support for multiboot. with that, you can load core.img > > successfully. > > It's working, thanks! Just one minor issue - the new core.img is > confused about the root device: > > Welcome to GRUB! > > error: unknown device > Entering into rescue mode... > grub rescue> set > prefix=(fd0,1,a)/boot/grub > root=fd0,1,a > grub rescue> > > > That's qemu with one hard drive and no floppies. By the way, "Entering > into rescue mode" should be "Entering rescue mode". > The boot drive isn't passed to core.img. > > > grub> multiboot /boot/grub/stage2 > > > alloc magic is broken at 0x93c50 > > > Aborted. Press any key to exit. > > > > stage2 is not multiboot format, actually, it's not of any format. The > > alloc magic broken is caused by a bug in the multiboot loader, my bsd > > also fit this, it will print the error message: "currently only ELF is > > supported" > > Yes, it's better now. > > Actually, GRUB 2 modules still confuse multiboot. Loading _bsd.mod or > affs.mod would cause GRUB to hand. But "multiboot configfile.mod" > actually crashed qemu 0.9.1 with "qemu: fatal: triple fault"! Multiboot loader would try to load elf kernel if the multiboot header is not found. The modules file have the elf header, but they're not really kernels, so it cause the problem. > > > however, it's still possible to load GRUB Legacy with my grubutil > > package. It contain several header file which you can use to load > > various boot loader from any loader that support linux kernel. For > > example, the header for grub legacy is ldgrub.bin, you can use it like > > this: > > > > linux ldgrub.bin > > initrd stage2 > > I'm thinking maybe the final GRUB 1 should make stage2 multiboot > compliant, if we are going to release it one day. it should be trivial, but i think grub1 is not updated any more ? -- Bean ^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: Starting grub 2 from grub legacy? 2008-02-19 18:33 ` Bean @ 2008-02-19 20:56 ` Pavel Roskin 2008-02-20 21:32 ` Yoshinori K. Okuji 0 siblings, 1 reply; 16+ messages in thread From: Pavel Roskin @ 2008-02-19 20:56 UTC (permalink / raw) To: The development of GRUB 2 On Wed, 2008-02-20 at 02:33 +0800, Bean wrote: > On Feb 20, 2008 2:19 AM, Pavel Roskin <proski@gnu.org> wrote: > > On Tue, 2008-02-19 at 15:14 +0800, Bean wrote: > > > > > That's because core.img is a.out format multiboot kernel, but the > > > current multiboot loader can only handle elf format. My bsd patch add > > > a.out support for multiboot. with that, you can load core.img > > > successfully. > > > > It's working, thanks! Just one minor issue - the new core.img is > > confused about the root device: > > > > Welcome to GRUB! > > > > error: unknown device > > Entering into rescue mode... > > grub rescue> set > > prefix=(fd0,1,a)/boot/grub > > root=fd0,1,a > > grub rescue> > > > > > > That's qemu with one hard drive and no floppies. By the way, "Entering > > into rescue mode" should be "Entering rescue mode". > > > > The boot drive isn't passed to core.img. I think it should be passed (see "boot_device" in the specification). Perhaps core.img doesn't use it? That would be more understandable. > > > > grub> multiboot /boot/grub/stage2 > > > > alloc magic is broken at 0x93c50 > > > > Aborted. Press any key to exit. > > > > > > stage2 is not multiboot format, actually, it's not of any format. The > > > alloc magic broken is caused by a bug in the multiboot loader, my bsd > > > also fit this, it will print the error message: "currently only ELF is > > > supported" > > > > Yes, it's better now. > > > > Actually, GRUB 2 modules still confuse multiboot. Loading _bsd.mod or > > affs.mod would cause GRUB to hand. But "multiboot configfile.mod" > > actually crashed qemu 0.9.1 with "qemu: fatal: triple fault"! > > Multiboot loader would try to load elf kernel if the multiboot header > is not found. The modules file have the elf header, but they're not > really kernels, so it cause the problem. Oh, well, I don't really care about foolproofing GRUB too much. But it made me think whether it's right for the "multiboot" command to try ELF if multiboot fails. Either we should go with one universal "kernel" command as in GRUB 1 (perhaps with switches to force specific loading algorithm) or we was a multitude of commands for every kernel type (linux, multiboot, elf, a.out, bsd, bsdloader). Having "multiboot" fallback to ELF is inconsistent. > > > however, it's still possible to load GRUB Legacy with my grubutil > > > package. It contain several header file which you can use to load > > > various boot loader from any loader that support linux kernel. For > > > example, the header for grub legacy is ldgrub.bin, you can use it like > > > this: > > > > > > linux ldgrub.bin > > > initrd stage2 > > > > I'm thinking maybe the final GRUB 1 should make stage2 multiboot > > compliant, if we are going to release it one day. > > it should be trivial, but i think grub1 is not updated any more ? The CVS is still exists, and there was a discussion about making a release with cs89x0 removed. -- Regards, Pavel Roskin ^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: Starting grub 2 from grub legacy? 2008-02-19 20:56 ` Pavel Roskin @ 2008-02-20 21:32 ` Yoshinori K. Okuji 2008-02-21 3:19 ` Bean 0 siblings, 1 reply; 16+ messages in thread From: Yoshinori K. Okuji @ 2008-02-20 21:32 UTC (permalink / raw) To: The development of GRUB 2 On Tuesday 19 February 2008 21:56, Pavel Roskin wrote: > But it made me think whether it's right for the "multiboot" command to > try ELF if multiboot fails. It is wrong. No fallback, please. If someone wants a fallback, it should be accomplished with scripting. Okuji ^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: Starting grub 2 from grub legacy? 2008-02-20 21:32 ` Yoshinori K. Okuji @ 2008-02-21 3:19 ` Bean 0 siblings, 0 replies; 16+ messages in thread From: Bean @ 2008-02-21 3:19 UTC (permalink / raw) To: The development of GRUB 2 On Thu, Feb 21, 2008 at 5:32 AM, Yoshinori K. Okuji <okuji@enbug.org> wrote: > On Tuesday 19 February 2008 21:56, Pavel Roskin wrote: > > But it made me think whether it's right for the "multiboot" command to > > try ELF if multiboot fails. > > It is wrong. No fallback, please. If someone wants a fallback, it should be > accomplished with scripting. I agree, in fact, the generic handling rarely works for elf kernels. The physical address in elf header can't be used directly most of the time, and the parameter need to be set properly before jumping to the entry point. -- Bean ^ permalink raw reply [flat|nested] 16+ messages in thread
end of thread, other threads:[~2008-02-21 3:19 UTC | newest] Thread overview: 16+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2008-02-13 16:19 Starting grub 2 from grub legacy? Arthur Marsh 2008-02-13 16:41 ` ardoRic 2008-02-13 18:50 ` ardoRic 2008-02-14 18:28 ` Arthur Marsh 2008-02-18 13:42 ` Arthur Marsh 2008-02-18 13:55 ` Arthur Marsh 2008-02-18 14:08 ` Pavel Roskin 2008-02-19 0:57 ` George Lengel 2008-02-19 6:25 ` Pavel Roskin 2008-02-19 7:13 ` Robert Millan 2008-02-19 7:14 ` Bean 2008-02-19 18:19 ` Pavel Roskin 2008-02-19 18:33 ` Bean 2008-02-19 20:56 ` Pavel Roskin 2008-02-20 21:32 ` Yoshinori K. Okuji 2008-02-21 3:19 ` Bean
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