Public bug reported:

Binary package hint: dmraid

Tested in Ubuntu 10.04 (and Parted Magic 4.9 and 4.11) - using built in 
/default dmraid and gparted or fdisk.
If RAID0 set are partitioned with fdisk or Gparted or a Windows based 
partitioning tool, then formatted in NTFS (via Gparted running  mkfs.ntfs or 
manually) in Ubuntu (or Parted Magic)  the NTFS formatting isn't quite right. 
Grub4dos and Grub do not see the drive as being formatted with an NTFS 
filesystem. If the partition is then formatted NTFS with a Windows based tool, 
then NTFS is detected as a proper filesystem. I am therefore happy the 
partitioning is not the problem.

However in any combination of above, Linux and Windows can see the
drives ok as NTFS. I do not believe this is a Grub bug because doing all
of the above with a non-RAID drive, everything works normally.

I conclude from the above dmraid is therefore somehow making mkfs.ntfs
not format the drive 'correctly'.

Tested with
2x Seagate 7200.12, 250Gb, on Intel ICHR10, configured RAID0, (at testing time 
split into 40Gb NTFS, 40Gb NTFS, 20Gb ext4, rest NTFS)

** Affects: dmraid (Ubuntu)
     Importance: Undecided
         Status: New

-- 
dmraid causes incorrect NTFS formatting via mkfs.ntfs
https://bugs.launchpad.net/bugs/601859
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