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Full Discussion: Kexec with Live USB/CD
Operating Systems Linux Kexec with Live USB/CD Post 302476350 by Corona688 on Wednesday 1st of December 2010 01:29:00 PM
Old 12-01-2010
Quote:
Originally Posted by al0x
Really?
It worked before.. xD
It's just a live usb and it works if I just plug it into my computer and boot it via BIOS Smilie
Then you need to take a closer look at the USB stick's boot process. Just kexec-ing a kernel and mounting sdb1 might not be the way to go. It may be mounting some image inside the DOS filesystem or something. Or it may be running purely from some image in RAM for all I know. I really can't tell what it's doing from here but it's sounding weirder by the second.

I'm not convinced your device files in the initrd are even right. It's quite possible for the device file to exist but the device not to exist, which would cause 'invalid argument' or 'no such device'. Look under /sys/class/block/ and post what's there.
 

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GRUB-BIOS-SETUP(3)					     Library Functions Manual						GRUB-BIOS-SETUP(3)

NAME
grub-bios-setup -- Set up images to boot from a device. SYNOPSIS
grub-bios-setup [-a | --allow-floppy] [-b | --boot-image=FILE] [-c | --core-image=FILE] [-d | --directory=DIR] [-f | --force] [-m | --device-map=FILE] [-s | --skip-fs-probe] [-v | --verbose] DEVICE DESCRIPTION
You should not normally run this program directly. Use grub-install instead. OPTIONS
--allow-floppy Make the device also bootable as a floppy. This option is the default for /dev/fdX devices. Some BIOSes will not boot images cre- ated with this option. --boot-image=FILE Use FILE as the boot image. The default value is boot.img. --core-image=FILE Use FILE as ther core image. The default value is core.img. --directory=DIR Use GRUB files in the directory DIR. The default value is /boot/grub. --force Install even if problems are detected. --device-map=FILE Use FILE as the device map. The default value is /boot/grub/device.map . --skip-fs-probe Do not probe DEVICE for filesystems. --verbose Print verbose messages. SEE ALSO
info grub Wed Feb 26 2014 GRUB-BIOS-SETUP(3)
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