Re: [PATCH] 2.5.29 IDE 110

Adam J. Richter
2002-08-01T17:35:00Z

>On 1 Aug 02 at 2:40, Marcin Dalecki wrote:
>>
>> - Eliminate support for "sector remapping". loop devices can handle
>> stuff like that. All the custom DOS high system memmory loaded
>> BIOS workaround tricks are obsolete right now. If anywhere it should
>> be the FAT filesystem code which should be clever enough to deal with
>> it by adjusting it's read/write methods.
>
>Hi Marcin,
> I'm using this on one system here - it has BIOS without LBA32, and
>without support for >30GB disks, but I needed to put large disk with
>already existing system to it, and using some disk manager was only
>choice (EZDrive, using 0_to_1 remap)... I know that 0_to_1 remap
>is broken for nr_sectors > 1, but it is hard to use loop device if
>system does not come up without boot manager at all.
> Best regards,
> Petr Vandrovec
> vandrove@vc.cvut.cz

You might want to examine:
ftp://ftp.yggdrasil.com//pub/dist/booting/make-ramdisk/make-ramdisk-0.38.tar.gz

This script builds an initial ramdisk that then switches to
another root (which you can also pass via a lilo command line argument
"root2=/dev/...."). It supports setting up /dev/loop devices for
encrypted root partitions, and you should be able to adapt it use
/dev/loop/nnn for non-encrypted roots.

Note that I am not arguing whether the "sector remapping" code
should stay or go. I don't know enough about that right now to have
an opinion.

Adam J. Richter __ ______________ 575 Oroville Road
adam@yggdrasil.com \ / Milpitas, California 95035
+1 408 309-6081 | g g d r a s i l United States of America
"Free Software For The Rest Of Us."