From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Petazzoni Date: Thu, 21 Aug 2014 15:03:37 +0200 Subject: [Buildroot] About i386 Architecture and Grub2 In-Reply-To: <1408588309.32587.YahooMailNeo@web141705.mail.bf1.yahoo.com> References: <1408534632.82498.YahooMailNeo@web141703.mail.bf1.yahoo.com> <20140820141013.24de59df@free-electrons.com> <1408588309.32587.YahooMailNeo@web141705.mail.bf1.yahoo.com> Message-ID: <20140821150337.3bc770ae@free-electrons.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Dear lee choon gay, On Wed, 20 Aug 2014 19:31:49 -0700, lee choon gay wrote: > I build the code with settings below. > menuconfig -> Filesystem images -> ext4. > menuconfig -> Filesystem images -> tar the root filesystem. > menuconfig -> System configuration -> Init system with Busybox (default). > menuconfig -> Toolchain -> Buildroot toolchain (default). > menuconfig -> Toolchain -> C library uClibc (default). > > Steps to build the partitions. > 1) I use sudo dd if=/dev/zero bs=1M count=1 of=/dev/sdb to wipe out the original partition in my pendrive. > 2) sudo fdisk -l will shows /dev/sdb doesn't contain > a valid partition table. > 3) To recreate the partition, I use sudo fdisk /dev/sdb. > 4) I enter n for new partition, p for primary, label partition as 1, default minimum for first sector, 5000000 for last sector. > 5) Then enter n again to create second partition, p for primary, label partition as 2, 5000001 for first sector, default maximum for last sector. > 6) Then enter w to write the partition table. > 7) Power cycle the pendrive. > 8) I format the partitions using sudo mkfs.ext4 /dev/sdb1 and sudo mkfs.ext4 /dev/sdb2. > 9) I sudo mount /dev/sdb1 /home/leecgy/temp1 and sudo chmod a+rw /home/leecgy/temp1 to enable writing to partition 1. > 10) Then sudo mount /dev/sdb2 /home/leecgy/temp2 and sudo chmod a+rw /home/leecgy/temp2 to enable writing to partition 2. > 11) I right click and create new folder called boot in partition 1, then right click and copy paste the bzImage into boot folder. > 12) Then right click and create new folder > called grub in boot folder, then right click and copy paste the grub.cfg into grub folder. > 13) I sudo grub-install --boot-directory=/home/leecgy/temp1/boot /dev/sdb to install grub. You may want to follow the instructions available in the help text of the Grub 2 option, which have been tested. > 14) I right click and extract the rootfs.tar, then right click and copy paste the contents inside rootfs into partition 2. Make sure you extract things as root: sudo tar -C /home/leecgy/temp2 -xf output/images/rootfs.tar > When trying to boot up, the code dump a lot of?error and stuck. I cannot shift+page up to see the top of the error. Please give the errors that you see. For now, we still have no idea whether it's a bootloader problem, a kernel problem, or a root filesystem problem. Without the boot log, there's not much we can do. Best regards, Thomas -- Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com