The photorec utility doesn't give me the result i want, I found another tool for recovering (by mistake) deleted data called extundelete.
Somehow I cant get extundelete to compile on the Qnap, so I compiled it on some ubuntu linux, which of course went fine.
I've put the compiled binary on the Qnap but it gives me (how was Murphy's law again) another error.
The error I'm facing right now is:
./extundelete: /usr/lib/libstdc++.so.6: version `GLIBCXX_3.4.11' not found (required by ./extundelete)
Does someone know how to successfully compile extundelete or has a working binairy?
Any help will be appreciated and I can trow in a PayPal donation in to get this fixed. (a little motivation is always good right?)
For the troubleshooting and testing I got a 2nd Qnap to trial and error so the original data doesn't get overwritten.