[syslinux] PXEboot large image creation

[Murali Krishnan Ganapathy]

Cristi Mitrana wrote:
> On 1/27/06, Serge de Souza <serge at cs.curtin.edu.au> wrote:
> [..]
>   
>> 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
>>
>> # mount -t vfat -o lopp bigDos.img /tmp/1
>> mount: wrong fs type, bad option, bad superblock on /dev/loop0,
>>         missing codepage or other error
>>         In some cases useful info is found in syslog - try
>>         dmesg | tail  or so
>> # dmesg
>> FAT: invalid media value (0x00)
>> VFS: Can't find a valid FAT filesystem on dev loop0.
>>     
>
>  I edit it with dosemu (as drive D) :
>  [ ~/.dosemurc]
>
>  $_hdimage = "drives/freedos drives/e.img "
>
>  [ end ~/.dosemurc ]
>
>  I created the image with mkdiskimage and added a Dosemu header. I
> don't know how to loop mount it, maybe there is a way (with or without
> the dosemu header) by specifying and additional offset (I think
> losetup has this feature).
>
> --
> mitu
>   
Alternately, you can remove the dosemu header before mounting it. From a 
previous thread
(http://syslinux.zytor.com/archives/2002-January/000043.html) the 
following should do it.

dd if=dosemuimg of=rawimage bs=128 skip=1
# Now mount rawmage

- Murali