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[Andy Lee Robinson <586175@xxxxxxxxxxxxxxxxxx>]

Great solution Andreas, it worked for a Win2k image which I could only
boot previously using an iso from http://www.resoo.org/docs/ntldr/files/

However, I have a w7 image that I have never managed to boot, apart from
its installation cd image using virt-install

20Gb w7 image:

# losetup /dev/loop0 /vm/w7.img; kpartx -a /dev/loop0
# fdisk -l /dev/loop0

Disk /dev/loop0: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xaf12c11f

      Device Boot      Start         End      Blocks   Id  System
/dev/loop0p1   *           1          13      102400    7  HPFS/NTFS
Partition 1 does not end on cylinder boundary.
/dev/loop0p2              13        2611    20867072    7  HPFS/NTFS
Partition 2 does not end on cylinder boundary.

# hexedit /dev/mapper/loop0p1
00000000   EB 52 90 4E  54 46 53 20  20 20 20 00  02 08 00 00  00 00 00 00  00 F8 00 00  3F 00 10 00  00 08 00 00  .R.NTFS    .............?.......
00000020   00 00 00 00  80 00 80 00  FF 1F 03 00  00 00 00 00  55 21 00 00  00 00 00 00  02 00 00 00  00 00 00 00  ................U!..............


# hexedit /dev/mapper/loop0p2
00000000   EB 52 90 4E  54 46 53 20  20 20 20 00  02 08 00 00  00 00 00 00  00 F8 00 00  3F 00 10 00  00 28 03 00  .R.NTFS    .............?....(..
00000020   00 00 00 00  80 00 80 00  FF CF 7C 02  00 00 00 00  00 00 0C 00  00 00 00 00  02 00 00 00  00 00 00 00  ..........|.....................


# kpartx -d /dev/loop0; losetup -d /dev/loop0

I changed location 0x1a to 0xFF on one or other or both partitions and
it still will not boot in virt-manager.

Cheers,
Andy.

-- 
Windows XP/2003 doesn't boot
https://bugs.launchpad.net/bugs/586175
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