[syslinux] memdisk boot failure

Ferenc Wagner wferi at niif.hu
Fri Dec 14 05:37:23 PST 2007


"H. Peter Anvin" <hpa at zytor.com> writes:

> Wagner Ferenc wrote:
> 
>> I'm trying to boot Feature Tool 2.08 (free download from
>> http://www.hitachigst.com/hdd/support/download.htm) from a pen drive
>> via memdisk.  QEMU can boot the pen drive all right, my ThinkPad
>> can't:
>> 
>> Loading ftool208.img.........................ready.
>> MEMDISK 3.53 2007-11-17  Copyright 2001-2007 H. Peter Anvin
>> e820: 0000000000000000 000000000009f000 1
>> e820: 000000000009f000 0000000000001000 2
>> e820: 00000000000dc000 0000000000024000 2
>> e820: 0000000000100000 000000001f5e0000 1
>> e820: 000000001f6e0000 0000000000017000 3
>> e820: 000000001f6f7000 0000000000002000 4
>> e820: 000000001f700000 0000000000800000 2
>> e820: 000000001ff00000 0000000000100000 2
>> e820: 00000000ff800000 0000000000400000 2
>> e820: 00000000ffc00000 0000000000400000 2
>> Ramdisk at 0x1f578000, length 0x00168000
>> command line: initrd=ftool208.img BOOT_IMAGE=memdisk
>> Disk is floppy 0, 1440 K, C/H/S = 80/2/18, EDD off
>> Total size needed = 2356 bytes, allocating 3K
>> Old dos memory at 0x9f000 (map says 0x9f000), loading at 0x9e400
>> 1588: 0xffff  15E801: 0x3c00 0x1e57
>> INT 13 08: Success, count = 0, BPT = 0000:0000
>> old: int13 = f00067c1  int15 = f00067c6
>> new: int13 = 9e40000a  int15 = 9e40037c
>> Loading boot sector... booting...
>> Starting PC DOS...
>> 
>> 
>> And the cursor sits here blinking until I press Ctrl-Alt-Del.
>> I tried version 3.08 and 3.54-pre1 with the same result.  raw, bigraw,
>> safeint or edd didn't help either.  What should I try now?
>
> Tricky.  It works on both my test machine, including the Thinkpad T60.
>
> Does booting other disk images on the problematic system work?
>
> One almost end up having to put tracers in the memdisk code itself to 
> get a clue where it's hanging...

I'm using a ThinkPad R50e.  Also tried FDSTD.144.gz from
http://www.fdos.org/bootdisks/, that starts up, but freezes after
printing " - InitDisk".  I will check others once I get home.
-- 
Thanks,
Feri.




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