[syslinux] SYSLINUX GRUB and booting logical partitions on USB drive

greenfinch greenfinch at web.de
Tue Jul 1 14:12:12 PDT 2008


Thank you all for your help.

 > Pierre:

>A grub2 cdrom boot disk image is provided in the following debian package:
> http://packages.debian.org/lenny/grub-rescue-pc
>
>NB:
> - not a live distro however, just a grub2 disk
> - the above said patch may not be applied

Thank you for the link, I will try it, when I finished to try SYSLINUX 
as bootloader.

-------

 >Sergey:

>/ - syslinux 3.63
/>[...]
>/ hd0_1 -> successfully booting damn small linux from sdb1 -> o.k.
/>/ hd0_2 -> successfully booting damn small linux from sdb2 -> o.k.
/>/ hd0_3 -> successfully booting damn small linux from sdb3 -> o.k.
/>/ hd0_4 -> SYSLINUX stucks -> o.k. because external partition, not bootable
/>/ hd0_5 -> message 'Requested logical partition not found' -> not o.k. because logical partition exists!
/>/ hd0_6 -> message 'Requested logical partition not found' -> o.k. because partition does not exist!
/
> You need a newer syslinux version (at least 3.64-pre1) - in older
> versions chain.c32 had a bug, and booting from logical partitions did
> not work at all.
http://git.kernel.org/?p=boot/syslinux/syslinux.git;a=commitdiff;h=e31a673cc14223db120f363dcd6ecc491125f622


Thank you for the hint. I've tried it just before with SYSLINUX 3.70 -> unfortunately same result:

 >/ hd0_5 -> message 'Requested logical partition not found' -> not o.k. 
because logical partition exists!

/

------

Meanwhile I have done the same tests using an USB harddisk, to avoid 
problems using an USB stick -> same bad results, booting from logical 
partition not possible
In addition I've tested the filesystem ext3 for all my partitions on the 
USB stick and used extlinux (version 3.70) -> same bad results, booting 
from logical partition not possible

If there is the time, maybe someone can try it the same I did to confirm 
or disagree my test results.

greenfinch









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