27 replies to this topic

[ktp]

Report the problem to grub4dos.

I did use one of the latest grub4dos version 0.4.4 2008-08-08
I already mentioned the problem in this topic, post #5, try #2:
http://www.911cd.net...showtopic=20468

[tinybit]

Try #1:
title boot iso test
find --set-root /offline.iso
kernel /isolinux.bin
initrd /offline.iso
=> Error 14: Invalid or unsupported excutable format

isolinux.bin is not a supported kernel format. It is only a supported Chainloader format.

Try #2:
title boot iso test
find --set-root /offline.iso
kernel /memdisk
initrd /isolinux.bin offline.iso
=> does not work, hang at loading boot sector

Are you sure memdisk supports isolinux.bin? I am afraid not.

Try #5:
title boot iso test (chainloader cd)
cdrom --init
map --hook
chainloader (cd0)/ISOLINUX/ISOLINUX.BIN
=> OK it boots isolinux
ISOLINUX 3.36 2007-02-10 isolinux: Found something at drive=FF
isolinux: Looks like it might be right, continuing...
isollinux: Disk error 01, AX=424E, drive FF

Boot failed: press a key to retry

=>Found something at drive=FF

This 0xFF is not the emulated cdrom by grub4dos. It is a sham cdrom created by some BIOSes.

You may try this instead:

title boot iso test (chainloader cd)
cdrom --init
map --hook
map (cd0) (0xFF) <------- overwrite the BIOS sham cdrom with our new (cd0)
map --rehook
chainloader (0xFF)/ISOLINUX/ISOLINUX.BIN

[Icecube]

UBCD50 will have grub4dos support (with grub4dos floppy emulation, instead of memdisk).

For a test version, see the following tread: http://www.boot-land...?...119&st=100#