Re: [Qemu-devel] Re: qemu disk on vfat

[Ian C. Blenke]

Yann Le Doaré wrote:

> You are right ! :
>
> sh-2.05b# qemu-img create /mnt/partitions/windows0/qmeu-disk 4M
> Formating '/mnt/partitions/windows0/qmeu-disk', fmt=raw, size=4096 kB
> sh-2.05b# ls -al /mnt/partitions/windows0/qmeu-disk            
> -rwxr-xr-x    1 root     root            0 2006-05-09
> 23:37 /mnt/partitions/windows0/qmeu-disk
> sh-2.05b# qemu-img create /mnt/partitions/windows0/qmeu-disk 40M
> Formating '/mnt/partitions/windows0/qmeu-disk', fmt=raw, size=40960 kB
> sh-2.05b# ls -al /mnt/partitions/windows0/qmeu-disk             
> -rwxr-xr-x    1 root     root            0 2006-05-09
> 23:38 /mnt/partitions/windows0
>  

FAT filesystems don't do sparse files (files with "holes" in them).

The qemu-img "raw" option attempts to create sparse disk images.

Create the image on a filesystem that does support sparse files and then 
_copy_ those sparse files to a FAT filesystem and they'll work just fine.

- Ian C. Blenke <address@hidden> http://ian.blenke.com/