[GRUB 2] Mount iso to /dev/sda1 (or other)

[BLuFeNiX]

I'm trying to make grub2 boot a bitdefender rescue cd (knoppix based). During the boot up it tries to find where the cd is mounted, but fails.

here is my grub.cfg:

menuentry "Bitdefender Rescue CD" {

    set isofile="/boot/iso/bitdefender_rescue.iso"

    loopback loop $isofile

    set gfxpayload=1024x768x16,1024x768

    linux (loop)/boot/isolinux/linux ramdisk_size=131072 init=/etc/init lang=us apm=power-off nomce loglevel=0 quiet BOOT_IMAGE=KNOPPIX

    initrd (loop)/boot/isolinux/minirt.gz

}

I get a message that KNOPPIX filesystem cannot be found and it drops me to a limited shell.

how would I change grub.cfg to mount the loopback to /dev/sda1? (or any directory for that matter)

I'm also not sure about the "BOOT_IMAGE=KNOPPIX" part, but I'll fix that next.

[BLuFeNiX]

No grub experts?

[muckblit]

Is there really a /boot/isolinux? I have only ever seen /isolinux.

[muckblit]

Look in knoppix forums for kernel opts such as isoloop= isofrom= or iso-scan/filename=

They are not standardized yet. The most powerful one is ubuntu iso-scan/filename= which you can read about here in usbdrive grub2 threads.

[Adderoll]

Just in case no-one has answered this question somewhere else (im too lazy to look) the entry that worked for me in grub2 was the following:

menuentry "BitDefender" {
loopback loop /bitdefender-rescue-cd.iso
linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=/bitdefender-rescue-cd.iso splash --
initrd (loop)/casper/initrd.gz
}

kthnxbye

[drs305]

BLuFeNiX,

I've created a thread on booting ISOs from Grub 2 but have no experience with BitDefender.

If you will confirm Adderoll's menuentry I'd like to put ut in my thread as a known working solution. The thread is:
ISO Booting with Grub 2

@ adderoll,

I notice the initrd is ".gz". Are you using the most current BitDefender ISO? I don't know, I just ask because the later Ubuntu ISOs are using initrd.lz instead of initrd.gz in /casper

[Jack Smith]

BLuFeNiX,

I've created a thread on booting ISOs from Grub 2 but have no experience with BitDefender.

If you will confirm Adderoll's menuentry I'd like to put ut in my thread as a known working solution. The thread is:
ISO Booting with Grub 2

@ adderoll,

I notice the initrd is ".gz". Are you using the most current BitDefender ISO? I don't know, I just ask because the later Ubuntu ISOs are using initrd.lz instead of initrd.gz in /casper

I can confirm that adderolls menuentry works. I have bitdefender loaded on a grub2 multiboot usb drive, and it will boot. The ISO image i used was current and it did use initrd.gz. I did rename the ISO and took out the splash part of adderolls menuentry, i also added the $isofile variable.

The menuentry i used looks like this.

   menuentry "BitDefender" {
set isofile="/boot/ISO/bitdefender.iso"
loopback loop (hd0,msdos1)$isofile
linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=$isofile
initrd (loop)/casper/initrd.gz
}

[drs305]

Jack, thanks for adding this.