So I have this disk where the GPT (GUID partition table) went bad, and was overwritten with a new GPT. This made my NTFS partition inaccessible, but I am sure that the partition itself is still on the drive.
The short explanation:
Beginning: 3tb disk, GUID Partition Table, 2.9tb NTFS partition with small amounts of empty space on either side.
Problem: Driver that can't see whole 3tb disk thinks there is a discrepancy between reported disk size and partition sizes, rewrites GPT to be 700gb, removing NTFS partition from view in the process
Now: Left with a 3tb disk that has a NTFS partition still on the disk, but not accessible since it's not in the partition table
Details can be found in my previous question at
There, someone suggested that the solution was to create a new GPT with the exact same start and end sectors and type codes for an NTFS partition as the previous partition.
I would like to know how I can figure out what the start and end sectors of the previous partition would be. I believe the drive was formatted NTFS under Windows 7, as an external drive. I have SystemRescueCD, Ubuntu and Xubuntu live USBs, and a separate Windows 7 HDD.