[parted-devel] Patch for Windows Vista partition destruction

[David Cantrell]

I've spent the last several days tracking the problem and verifying that 
my fix won't break previous versions of Windows and their partitions.

The bug I was pointed to:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=380226

The summary:
Vista partitions are not aligned on the 2nd head of the 1st cylinder if 
they are at the beginning of the drive, they are aligned to sector 2048. 
  Alignment to the 2nd head is standard for pretty much everything else 
on the DOS disklabel which is what _primary_start_constraint() takes 
care of in libparted/labels/dos.c.

The fix:
I've modified the call to _primary_start_constraint() so it also 
receives the PedPartition for the partition it's working on.  Inside 
_primary_start_constraint(), I check to see if the probed starting 
sector of the partition in question does not equal the bios value.  If 
it doesn't, we preserve whatever we probed.  If it does equal the bios 
value, we go ahead and ensure we are aligned according to the existing 
constraint.  This fix works with Vista and Windows 2000 in my test 
environment.  I am going to test NT 4.0 to check another version of 
NTFS.  I'll most likely add this to the Fedora development tree tonight. 
  I'd like to know if it works for Debian.

-- 
David Cantrell
Red Hat / Westford, MA
-------------- next part --------------
A non-text attachment was scrubbed...
Name: parted-1.8.2-vista.patch
Type: text/x-patch
Size: 2500 bytes
Desc: not available
Url : http://lists.alioth.debian.org/pipermail/parted-devel/attachments/20070118/7dce7f79/parted-1.8.2-vista.bin