I was imaging my ext4 1tb storage disk that I had accidentally formatted to NTFS with testdisk and an external usb dock when I had to back out.
Testdisk asked about writing the MBR and I clicked yes. Bad move. Prior to this I had been copying files from a 400gb using the same dock. When test disk wrote the MBR it wrote it for the 400GB drive onto the 1TB. So now I have a 1TB ext4 drive that thinks it is a 400gb NTFS.
I really need the files on this drive (years of research) and it seems that if I can delet the MBR I should be able to at list image the disk (files were all showing up fine in test disk prior to the erroneous MBR write)
How do I erase the MBR without doing any more damage? I am noob with this sort of issue and appreciate all the help I can get. And I'm more than a little panicked about losing all that data. Below is part of the testdisk I ran today
recover_EXT2: s_block_group_nr=0/7452, s_mnt_count=81/37, s_blocks_per_group=32768, s_inodes_per_group=8192 recover_EXT2: s_blocksize=4096 recover_EXT2: s_blocks_count 244190646 recover_EXT2: part_size 1953525168 Linux 60600 0 1 182201 80 63 1953525168 [New Volume] EXT4 Large file Sparse superblock Recover, 1000 GB / 931 GiB This partition ends after the disk limits. (start=973539000, size=1953525168, end=2927064167, disk end=1953536130) Disk /dev/sdh - 1000 GB / 931 GiB - CHS 121602 255 63 Check the harddisk size: HD jumpers settings, BIOS detection... The harddisk (1000 GB / 931 GiB) seems too small! (< 2041 GB / 1901 GiB) The following partitions can't be recovered: Linux 60597 217 37 182199 43 36 1953525168 [New Volume] EXT4 Large file Sparse superblock Recover, 1000 GB / 931 GiB Linux 60599 65 11 182200 146 10 1953525168 [New Volume] EXT4 Large file Sparse superblock Recover, 1000 GB / 931 GiB Linux 60600 0 1 182201 80 63 1953525168 [New Volume] EXT4 Large file Sparse superblock Recover, 1000 GB / 931 GiB FAT32 LBA 218010 109 3 248252 44 9 485833642