Re: grub2 - chainloader - linux on usb - bios does not see usb.

[KESHAV P.R.]

> On Wed, Dec 22, 2010 at 13:09, Pawel Karpowicz <address@hidden> wrote:
>> Hallo Group Members
>>
>> My linux system resides on usb flash drive.
>> My goal is to run it on several machines without their knowledge (ie. grub2
>> installed in their hard drives' boot sector).
>> To do this I have grub boot cd prepared, which contains:
>> - grub of course.
>> - vmlinuz/bzimage,....
>>
>> Every time I want to run linux from another machine I set bios to search
>> system on CD first. then boot the system.
>> Such solution has one drawback:
>> everytime when linux upgrade process changes kernel, I need to prepare new
>> boot CD, so that to contain new bmlinuz/bzimage files.
>>
>> It seems that the way to overwrite this limitation is to create boot CD with
>> only one entry required. Something like that:
>>       menuentry "Grub 1 Bootloader" {
>>         set root=(hd2,1)
>>         chainloader +1
>>        }
>>
>>
>> Unfortunatelly it does not work.
>>
>> What do I do wrong?
>> Some debugging:
>> at grub boot prompt:
>> grub> ls
>> (hd0), (hd0,1), (hd0,2)
>>
>> it does not see hd1, hd2, which are usb drives.
>> Following does not help
>> grub> insmod usb
>>
>> have You got an idea how to solve this problem?
>>
>> best regards,
>> Paul
>>
>> _______________________________________________
>> Help-grub mailing list
>> address@hidden
>> http://lists.gnu.org/mailman/listinfo/help-grub
>>
>>

Try "insmod usbms" (USB Mass Storage module) and "insmod part_msdos"
(Load MBR partition table module). On a side note, why can't you
install grub2 to the usb directly instead of using a cd to boot the
usb? It is possible.

Keshav