GPT Not mounting using "normal" GPT mounting techniques 12.04

mount ntfs gpt

8,587

Your partition table is corrupt. Note the following:

First usable sector is 34, last usable sector is 3907027021
Number Start (sector) End (sector) Size       Code Name
  2          264192   3907028991   1.8 TiB    0700 Basic data partition

The end sector of partition #2 is after the last usable sector on the disk. This is illegal.

Note, however, that this says nothing about the filesystem on that partition. It's possible that the filesystem is smaller by a wide enough margin to make it fit entirely on the disk. If so, deleting the partition in gdisk and re-creating it with a smaller size may fix things. You'll need to figure out the precise size of the filesystem, though. Perhaps one of the Linux NTFS utilities can provide this information, but offhand I'm not sure precisely how to do this.

Also note that it's partition #2 (/dev/sdb2) that contains the filesystem, not /dev/sdb1 or /dev/sdb. If you've been using either of the latter two identifiers in Linux, that could explain the error messages you've been getting. If you try /dev/sdb2 and it starts working, though, don't ignore the partition table problem; it's likely to come back and bite you!

8,587

Roy Markham

Updated on September 18, 2022

Comments

Roy Markham almost 2 years
I've got two 2TB drivess: one MBR and the other GPT.
```
sudo blckid /dev/sdb1
```
returns a blank.

gdisk shows:
```
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present

Found valid GPT with protective MBR; using GPT.

Warning! Secondary partition table overlaps the last partition by 1970 blocks!
You will need to delete this partition or resize it in another utility.

Disk /dev/sdb: 3907027055 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 38A1113D-B5E9-4B69-ABFF-ACB27AFB3DDD
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907027021
Partitions will be aligned on 8-sector boundaries

Total free space is 2014 sectors (1007.0 KiB)
Number Start (sector) End (sector) Size       Code Name
  1              34       262177   128.0 MiB  0C01 Microsoft reserved part
  2          264192   3907028991   1.8 TiB    0700 Basic data partition
```
mounting via fstab or -t gives same error when using NTFS or NTFS-3g "NTFS signature is missing"

GParted says one partition is overwriting another, yet windows shows no errors at all. The drive is also mounted easily via MacOs (triple boot)
- Jeremy Kerr almost 12 years
  
  Could you post the output of gdisk -l /dev/sdb ?
- Roy Markham almost 12 years
  
  Partition table scan: MBR: protective BSD: not present APM: not present GPT: present Found valid GPT with protective MBR; using GPT. Warning! Secondary partition table overlaps the last partition by 1970 blocks! You will need to delete this partition or resize it in another utility. Disk /dev/sdb: 3907027055 sectors, 1.8 TiB Logical sector size: 512 bytes Disk identifier (GUID): 38A1113D-B5E9-4B69-ABFF-ACB27AFB3DDD Partition table holds up to 128 entries First usable sector is 34, last usable sector is 3907027021 Partitions will be aligned on 8-sector boundaries
- Roy Markham almost 12 years
  
  Total free space is 2014 sectors (1007.0 KiB) Number Start (sector) End (sector) Size Code Name 1 34 262177 128.0 MiB 0C01 Microsoft reserved part 2 264192 3907028991 1.8 TiB 0700 Basic data partition
- Roy Markham almost 12 years
  
  sorry for the formatting, dont know why it was copynpaste
- Jeremy Kerr almost 12 years
  
  Not all formatting is supported in comments, so I've added the data to your question.
- Roy Markham almost 12 years
  
  That just confused the heck out of me, here I'm looking wth?! ;)
- Jeremy Kerr almost 12 years
  
  Could you also edit your question to include the command you're using to mount the partition, and the output of sudo file -s /dev/sdb* ?
- Jeremy Kerr almost 12 years
  
  not sure if you saw the previous comment: we're waiting on the output of that file command above.