[Linux-NTFS-User] Extending a Logical Volume makes it unbootable.

[K T L. <li...@lx...>]

 OK. I have finally isolated all my windows woes into a simple reproducable and seemingly weird problem. I have an LV image of 1.7GB of windows that boots perfectly.


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$ fdisk -ul /dev/VolGroup00/windows_rootimg                                                          ~[8]

Disk /dev/VolGroup00/windows_rootimg: 1811 MB, 1811939328 bytes
46 heads, 45 sectors/track, 1709 cylinders, total 3538944 sectors
Units = sectors of 1 * 512 = 512 bytes

                          Device Boot      Start         End      Blocks   Id  System
/dev/VolGroup00/windows_rootimg1   *          63     3538943     1769440+   7  HPFS/NTFS
-------------------------

 The above boots perfectly.

Now I merely do  lvextend /dev/VolGroup00/windows_rootimg -L+1.5G

And that's it, the boot hangs at the very beginning itself; It stops after printing the message "booting from harddisk". The fdisk for the extended image is:

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$ fdisk -ul /dev/VolGroup00/windows_rootimg                                                          ~[8]

Disk /dev/VolGroup00/windows_rootimg: 3422 MB, 3422552064 bytes
46 heads, 45 sectors/track, 3229 cylinders, total 6684672 sectors
Units = sectors of 1 * 512 = 512 bytes

                          Device Boot      Start         End      Blocks   Id  System
/dev/VolGroup00/windows_rootimg1   *          63     3538943     1769440+   7  HPFS/NTFS
--------------------

Why would merely extending the partition prevent it from booting, and how do I overcome this?

Thanks a lot in advance.