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Can't open filesystem. Filesystem seems damaged

Posted: 24 Nov 2025, 14:54
by achalk
Using NTFS and Windows 11. My drive is an external Buffalo In use for years. No problems. I get the above message when I try to fix the MBR. Advanced->Boot or Advanced->List TestDisk output from Boot is:

Code: Select all

TestDisk 7.2, Data Recovery Utility, February 2024                                                                                  Christophe GRENIER <grenier@cgsecurity.org>                                                                                         https://www.cgsecurity.org                                                                                                                                                                                                                                              Disk \\.\PhysicalDrive1 - 3000 GB / 2794 GiB - CHS 364801 255 63                                                                         Partition                  Start        End    Size in sectors                                                                  1 P MS Data                     1024 5860532223 5860531200 [HD-LCU3]                                                                                                                                                                                                   Boot sector                                                                                                                         Status: OK                                                                                                                                                                                                                                                              Backup boot sector                                                                                                                  Status: OK                                                                                                                                                                                                                                                              Sectors are identical.                                                                                                                                                                                                                                                  A valid NTFS Boot sector must be present in order to access                                                                         any data; even if the partition is not bootable.
It is as though data is there, but the instructions to read it are gone.

How do I fix this?
What do you need me to provide?

Thanks.