[syslinux] ISOLinux and OpenBSD?

ganapathy murali krishnan gmurali at cs.uchicago.edu
Wed Mar 17 12:51:08 PST 2004

That worked! Instead of typing

"memdisk initrd=openbsd.img", if I type "openbsd.img" then it works and 
drops me into the boot prompt.

So I guess this might qualify as a bug-report for memdisk. Would be 
interesting to see what BIOS does but memdisk doesn't.

A successful example
boot: openbsd.img
reading boot......
probing: pc0 apm mem[633K 126M a20=on]
disk: fd0
 >> OpenBSD/i386 BOOT 2.02

A failed example
boot: memdisk initrd=openbsd.img
Loading memdisk.....
Loading openbsd.img.....
MEMDISK 2.08 <snip>
<snip e20 details>
Ramdisk at 0x07e60000, length 0x00168000
command line: initrd=openbsd.img BOOT_IMAGE=memdisk
Disk is floppy, 1440 K, C/H/S = 80/2/18
Total size needed = 1455 bytes, allocating 2K
old dos memory at 0x9f400 (map says 0x9f400), loading at 0x9ec00
1588: 0xffff 15E801: 0x3c00 0x06e6
INT 13 08: Failure, assuming this is the only drive   # Yes, there are 
no floppy drives on this system
old: int13 = e23f780d int15 = f000f859
new: int13 = 9ec00008 int 15 = 9ec00272
Loading boot sector.... booting...
reading boot......
probing: pc0 apm mem[631K 125M a20=on]
disk: fd0 (hangs here)

- Murali

Blaauw,Bernd B. wrote:

>>+ booting floppy34.fs image from the CD works correctly (no ISOLinux, in 
>>built BIOS emulates the floppy)
>have you tried the following (Isolinux direct emulation):
>should function the same as if direct 1.44MB eltorito emulation was used.
>but using MEMDISK it fails?
>that's all I can come up with .

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