Last week my HDD corrupted. I was able to restore it and save most files with TestDisk. However all files are named such as "F26689223" instead of their original file-names. With a keyword-searcher, I was able to find most of what I was looking for, except for my seed-phrase. I have around 45,000 txt-documents that are 1 kb, so it is like looking for a needle in a haystack. However, I recovered around 18 .key files. These I cannot open in the XMR GUI, I'm not sure why.
When I open them in notepad they start with either:
-----BEGIN RSA PRIVATE KEY-----
Or this one:
-----BEGIN RSA PRIVATE KEY----- Proc-Type: 4,ENCRYPTED DEK-Info: (Numbers)