On Mon, 9 Apr 2001, Vincent C Young wrote:
> I encountered problem booting the disk image. My host machine is
> using redhat 7.0 and I am going to install redhat 7.0 on the guest
> machine as well. I created the disk image using the script
> user/createdisk. I modified conf/linuxhd to boot with the floppy disk
> and use that disk image file as diskc.
>
> Everything works fine until it returns this error:
>
> invalid compressed format (err=1)VFS: Cannot open root device 08:41
> Kernel panic: VFS: Unable to mount root fs on 08:41
The fact that it is trying to find the root filesystem on 08:41 may be a
clue here. I believe 08:41 is the device number: major number 8, minor
number 0x41 = 65 decimal. If you look in /dev, you will see that 08:41 is
/dev/sde1, probably your "real" system's root disk or something.
brw-rw---- 1 root disk 8, 65 Apr 16 1999 sde1
Try running rdev on the kernel that you use in the floppy image, and tell
it to boot /dev/hda or /dev/hda1 instead.
/usr/sbin/rdev bootdisk.img /dev/hda
Use /dev/hda if the hard disk image itself is a filesystem. Use /dev/hda1
if the hard disk image has its own a partition table. I find that
/dev/hda is better because you can easily mount the hdimage in the real
system, with loopback.
Good luck,
Bryce
