[ILUG] OT: damaged headers on External NTFS USB drive on dual boot Linux/Win 7 PC

[John Kinsella]

Hi - as above. Apologies for OT posing...

My pc is dual boot Linux/Win 7.

I have an external 512 GB USB drive, formatted as NTFS.

I was fuffing about in Win 7 moving my iTunes collection from an NTFS 
(Win 7) partition on the PC internal drive to the USB drive.

At next (Win 7 & Linux) boots the USB drive was inaccessible..
Maybe a Win 7 glitch, who knows..

(I have had no success Googling for Win 7 solutions.)

Linux reports:
root at jkcray:/home/kinsella# fdisk -lu /dev/sdc

Disk /dev/sdc: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x3bd15fd4

    Device Boot      Start         End      Blocks   Id  System
/dev/sdc1              63   976768064   488384001    7  HPFS/NTFS/exFAT

But when I use the Information option in gparted to examine the 
/dev/sdc1 partition I get
"ntfsresize seg fault.
Unable to read the contents of this file system"..

Gparted graphically shows /dev/sdc as composed of two partitions,
/dev/sdc1 (465.76 Gb) with the correct label
and a small partition (2.49 Mb) unallocated.

Presumably the latter is the FAT or whatever the correct Windows term 
for disk header?

Using dd I can see that there is still data on the disk..

root at jkcray:/home/kinsella# dd if=/dev/sdc skip=0 count=1000 bs=512 | 
hexdump -C |grep -i Ctrl
00007fd0  20 43 74 72 6c 2b 41 6c  74 2b 44 65 6c 20 74 6f  | 
Ctrl+Alt+Del to|
1000+0 records in
1000+0 records out
512000 bytes (512 kB) copied, 0.30871 s, 1.7 MB/s


Is there any way to make the disk readable?

Thanks

John

-- 
John A. Kinsella		Ph: 	+353-61-202148 		(Direct)
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