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Full Discussion: Unrecognized disk label of a external HD
Special Forums Hardware Unrecognized disk label of a external HD Post 302471414 by cokedude on Friday 12th of November 2010 05:35:48 PM
Old 11-12-2010
For some reason I can now see my partition in Nautilus (my file manager) but I can't mount it.

When I do this command should which one should I be using?
Code:
sudo fdisk /dev/sdb
sudo fdisk /dev/sdb1

Also more information is showing up in sudo fdisk -l. The first time I tried it I couldn't see the part I am putting in between stars below.
Code:
~ $ sudo fdisk -l

Disk /dev/sda: 100.0 GB, 100030242816 bytes
255 heads, 63 sectors/track, 12161 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: 0x000c8b89

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1        1245     9999360   83  Linux
/dev/sda2            1246        5478    33998849    5  Extended
/dev/sda3   *        5479       12161    53681197+   7  HPFS/NTFS
/dev/sda5            1246        1743     3998720   82  Linux swap / Solaris
/dev/sda6            1744        5478    29999104   83  Linux

Disk /dev/sdb: 203.9 GB, 203928109056 bytes
255 heads, 63 sectors/track, 24792 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: 0x9503c6ab

**************************************************************************************************************************
   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1       24792   199141708+   7  HPFS/NTFS

**************************************************************************************************************************

It now thinks I at least have a valid partition table.

---------- Post updated at 05:35 PM ---------- Previous update was at 05:10 PM ----------

Quote:
Originally Posted by Corona688
Remove the extra pipe.

Code:
sudo dd if=/dev/sdb count=$((2*16384)) | hexdump -C > /home/bob/Desktop/logfile.txt ; less /home/bob/logfile.txt

Much like I said; create a boot sector that matches the place where you found the partition. Without knowing where you found NTFS though, that may be difficult. I'm reluctant to give too general instructions lest it be my fault your drive gets messed up.

Here's a dump I managed to get from the very start of an NTFS partition:
Code:
00000000  eb 52 90 4e 54 46 53 20  20 20 20 00 02 08 00 00  |.R.NTFS    .....|
00000010  00 00 00 00 00 f8 00 00  3f 00 ff 00 3f 00 00 00  |........?...?...|
00000020  00 00 00 00 80 00 80 00  9b 7d 97 0f 00 00 00 00  |.........}......|
00000030  00 00 0c 00 00 00 00 00  10 00 00 00 00 00 00 00  |................|
00000040  f6 00 00 00 01 00 00 00  91 09 c8 74 39 c8 74 2a  |...........t9.t*|
00000050  00 00 00 00 fa 33 c0 8e  d0 bc 00 7c fb b8 c0 07  |.....3.....|....|
00000060  8e d8 e8 16 00 b8 00 0d  8e c0 33 db c6 06 0e 00  |..........3.....|
00000070  10 e8 53 00 68 00 0d 68  6a 02 cb 8a 16 24 00 b4  |..S.h..hj....$..|
00000080  08 cd 13 73 05 b9 ff ff  8a f1 66 0f b6 c6 40 66  |...s......f...@f|
00000090  0f b6 d1 80 e2 3f f7 e2  86 cd c0 ed 06 41 66 0f  |.....?.......Af.|

Since you only see a raw device though, not a partition, yours won't be at zero.
Could you please try? It now at least thinks I have a partition table Smilie. Check my previous post.
Last edited by Scott; 11-20-2010 at 06:54 AM.. Reason: Code tags, please...
 

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