> I have an old laptop that I use for testing new versions of Fedora - however
> although it will boot of a physical CD containing a LiveCD (say of F12
> Alpha), it is old enough not to be able to boot off usb devices since the
> BIOS is not arranged to do so. So a usbkey that contains a LiveCD that works
> perfectly well on other machines won't play on this particular machine
> (Fijitsu-Siemens Amilo D 6800)
> Can anyone point me to a reference to work around this by booting off say an
> altered grub stansa in the HD which then refers to a plugged in usbkey to
> continue loading the LiveCD files from the usbkey? Or something similar?
Mike,
maybe my experience with booting from an external usb disk will help.
I also wasn't
"able to boot off usb devices since the BIOS is not arranged to do so"
[either that or I am too dense to properly fiddle with the BIOS].
So, what I did was copy the vmlinuz, initrd.img somewhere
onto my internal HDisks, specifically in my case on /dev/sdb1.
Here is my grub.conf stanza for f10 booting off of the 2nd partition
of my usbdisk, [label rootusb2]
#24...68 -> 29..78
title Fedora (2.6.27.29-170.2.78.fc10.i686)usb2new TEST bootf10usb2 vga=795
root (hd1,0) #sdb1
kernel /bootf10usb2/vmlinuz-2.6.27.29-170.2.78.fc10.i686 ro
root=UUID=8f24a787-132c-4dc8-9126-9d85292e349f quiet vga=795
initrd /bootf10usb2/initrd-2.6.27.29-170.2.78.fc10.i686.img
I also did this recently with an f11 hdinstall into usb3.
Detail:
my usb disk is seen as sdc when booted up into my my main f10 on sda1
but when this bootf10usb2 boots it is seen as sda2, i.e,
disk order is reordered to usb=sda, hd1=sdb, hd2=sdc.
from blkid run from my mainf10on sda1:
/dev/sdc2: LABEL="rootusb2"
UUID="8f24a787-132c-4dc8-9126-9d85292e349f" TYPE="ext3"
However, this does not affect the "root (hd1,0)" for sdb1
ie that retains nonreorderd syntax,
even though when booted up f10usb2 sees sdb1 as sdc1.
This solution is not perfect of course.
I can't just take this external usb as is
to another computer and have this f10usb2 boot up
because the kernel, initrd can't be found.
HTH
Jack
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