[syslinux] memdisk fails with 4 hdds

[H. Peter Anvin]

Knut Petersen wrote:
> Hi everybody.
> 
> Hardware: Several computers with
> 
>  Asus P/I-P55t2P4S motherboard,
>  CPU Pentium MMX and K6-2/3,
>  128 to 384 MB RAM,
>  Award 4.51PG Bios,
>  Hard disks from 8 GB to 123.5 GB
>  Realtek 8139D based NICs with PXE Boot-Proms
> 
> PXELINUX 2.06 / MEMDISK 2.06:
>   - fails to boot Compaq PC-DOS 3.31
> 
> PXELINUX 2.08
>   - succeeds to boot Compaq PC-DOS 3.31 with 0, 1, 2 and 3 hdds 
> installed in system
>   - fails to boot the same disk image with 4 hdds installed in system. 
> Computer locks
>     up completly after "Loading boot sector ... booting ...", cursor at 
> beginning of next
>     line.
> 
> There is no difference on the values displayed before success or lockup ...
> 
> Old dos memory at 0x9fc00 (map says 0xa0000), loading at 0x9f400
> 1588:  0xffff 15e801 0x3c000 0xee7
> Int 1308 Success, count=0, BPT = 0000:0000
> old: int 13 = f000b6ac int15=f000f859
> new: int 13 = 9f400008 int15 =9f400272
> loading boot sector ... booting ...
> _<=cursor blinking here, lockup or success
> 

This means it booted DOS but didn't get anywhere.

What happens if you boot this version of DOS just from a floppy?

Is this a floppy image or hard disk image?

	-hpa