[syslinux] pxelinux / memdisk booting problem

[H. Peter Anvin]

Michael Blandford wrote:
> H. Peter Anvin wrote:
> 
>> Please post all the messages, not a truncated abstract.
> 
> 
> PXE entry point found (we hope) at 9D64:0106
> My IP address seems to be <HEX DELETED> <IP DELETED>
> ip=<IP DELETED>:<TFTPIP DELETED>:<GATEWAY><NETMASK>
> TFTP prefix:
> Trying to load: pxelinux.cfg/<HEX DELETED>
> Loading ia32/memdisk....
> Loading ia32/sir4-up/floppy.img.........................
> Ready.
> MEMDISK 1.76 2002-08-27 Copyright 2001-2002 H. Peter Anvin
> Ramdisk at 0xffe70000, length 0x00168000
              ^^^^^^^^^^
> command line: initrd=ia32/sir4-up/floppy.img BOOT_IMAGE=ia32/memdisk
> Disk is floppy, 1440 K, C/H/S = 80/2/18
> dos_mem  =    0x9f400 (637 K)
> low_mem  =   0xf00000 (15360 K)
> high_mem = 0x1efe06c0 (507777 K)
              ^^^^^^^^^^

This is extremely odd.  It seems like PXELINUX thinks you have 4 GB of 
RAM, but MEMDISK thinks you have 512 MB.  I'd really like to see your 
E820 map.  How much memory do you have in this machine?  You may want to 
try specifying a mem=524161K parameter to see what happens.

	-hpa