I recently used ddrescue in Ubuntu to attempt recovering data from a failing HDD (details here). The process completed successfully with the following:
GNU ddrescue 1.19 Press Ctrl-C to interrupt Initial status (read from logfile) rescued: 499912 MB, errsize: 195 MB, errors: 13918 Current status rescued: 499942 MB, errsize: 165 MB, current rate: 0 B/s ipos: 221551 MB, errors: 15631, average rate: 133 B/s opos: 221551 MB, run time: 2.56 d, successful read: 3.65 m ago Finished
I now have an external USB HDD with the recovered contents of the failing drive. I am unsure about the correct next steps though. The USB HDD drive shows up in Ubuntu as unallocated space with no partitions. I read through questions on this forum that suggested chkdsk /f in Windows but the disk is seen as unallocated space there.
What process should I follow to get the partitions and data readable? The disk was an NTFS volume made in Windows 10.