[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] image size - OS reports 720mb, but image file is 2.3 gi
Re: [Qemu-devel] image size - OS reports 720mb, but image file is 2.3 gig
Sat, 12 Feb 2005 14:04:52 +0100
> You need to make sure all the unused space on the
> image is actually zeroed.
> One way to achieve this would be to shrink the guest partition to its minimum
> size, then create a second partition on the unused space and explicitly zero
> that out (using dd from knoppix if necessary).
I think there is a easier way to zero unused space on an image or partition.
Mount the image/partition
cd into it
cat /dev/zero > dummy_file
(Wait until error : No space left on device)
Hope it helps,