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[Qemu-devel] Re: QEMU won't load QCOW images under Windows


From: Ronald
Subject: [Qemu-devel] Re: QEMU won't load QCOW images under Windows
Date: Sat, 09 Oct 2004 14:27:11 +0200
User-agent: Pan/0.14.2 (This is not a psychotic episode. It's a cleansing moment of clarity.)

Le Sat, 09 Oct 2004 00:42:37 -0300, André Braga a écrit :

> The title says it all. If I try to start QEMU with a qcow image passed as
> an argument to -hda , the emulator won't load. If I pass a raw image
> instead, it works perfectly.
> 
> Wasn't QCOW supposed to address exactly a problem regarding Windows and
> the lack of support for holes in the filesystem?
> 
> Any clues? Is there a strace equivalent for Windows so I can at least try
> to track the problem down? (I'm not really fond of the mingw gdb port,
> mind you...)

some observations:
I can't get infos from qcow images created under windows with qemu-img
under linux.
Qcow images created under linux and windows for the same base file,
don't differs only by the path of the base file.
I don't know if this is normal or not.
Here is two hexdump from qcow images created under linux and windows:

address@hidden hexdump -C slack.qco
00000000  51 46 49 fb 00 00 00 01  00 00 00 00 00 00 00 30  |QFIû...........0|
00000010  00 00 00 12 41 67 19 58  00 00 00 00 1f 40 00 00  |address@hidden|
00000020  09 0c 00 00 00 00 00 00  00 00 00 00 00 00 00 48  |...............H|
00000030  2f 6d 6e 74 2f 64 6f 73  2f 73 6c 61 63 6b 2e 64  |/mnt/dos/slack.d|
00000040  73 6b 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |sk..............|
00000050  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000810  00 00 00 00 00 00 00 00                           |........|
00000818

address@hidden hexdump -C slack.qcw
00000000  51 46 49 fb 00 00 00 01  00 00 00 00 00 00 00 2e  |QFIû............|
00000010  00 00 00 0c 19 58 41 67  00 00 00 00 1f 40 00 00  |address@hidden|
00000020  09 0c 00 00 00 00 00 00  00 00 00 00 00 40 43 3a  |address@hidden:|
00000030  5c 73 6c 61 63 6b 2e 64  73 6b 00 00 00 00 00 00  |\slack.dsk......|
00000040  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000810





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