[syslinux] PXEboot large image creation

[H. Peter Anvin]

Serge de Souza wrote:
> Cristi Mitrana wrote:
> 
>> On 1/27/06, Serge de Souza <serge at cs.curtin.edu.au> wrote:
>>
>>> Does someone have a working disk image (that loads DOS and is bigger
>>> than 1.44) they are willing to share ?
>>>
>>
>>
>>  Sure, here it is:  http://dp.solvit.ro/bigDos.imz
>>  It's a gzipped image of a DOS image (accessible with dosemu also).
>>  The line in the configu file for this is:
>>
>>   kernel ::/memdisk
>>    append initrd=bigDos.imz c=320 h=2 s=32 harddisk
> 
> That worked, but I don't seem to be able to mount it after uncompressing 
> it:
> 
> # mount -o loop bigDos.img /tmp/1
> mount: you must specify the filesystem type
> 

Since it's a hard disk image, you have to specify the filesystem offset; 
this is *usually* the number of sectors * 512 bytes.  If there is a 
DOSEMU header, you have to add 128:

mount -o loop,offset=16512 bigDos.img /tmp/1

	-hpa