Hi, I seem to be getting corrupt information from a hard drive, although ddrescue isn't reporting any errors. Drive originally had bad heads, performed head swap in a cleanroo. Drive is recognized after head swap, but has differences on data being read.
Any ideas on what's going on? Any way to proceed and be confident in the data written out? --------------- [r...@server dataRecovery]# ddrescue --direct --max-size=1Mi /dev/sdg try1.img try1.img.logfile Press Ctrl-C to interrupt Initial status (read from logfile) rescued: 0 B, errsize: 0 B, errors: 0 Current status rescued: 1024 kB, errsize: 0 B, current rate: 1228 B/s ipos: 983552 B, errors: 0, average rate: 24742 B/s opos: 983552 B Finished [r...@server dataRecovery]# ddrescue --direct --max-size=1Mi /dev/sdg try2.img try2.img.logfile Press Ctrl-C to interrupt Initial status (read from logfile) rescued: 0 B, errsize: 0 B, errors: 0 Current status rescued: 1024 kB, errsize: 0 B, current rate: 1228 B/s ipos: 983552 B, errors: 0, average rate: 26044 B/s opos: 983552 B Finished [r...@server dataRecovery]# diff try1.img try2.img Binary files try1.img and try2.img differ [r...@server dataRecovery]# diff try1.img try2.img --text |wc -l 6148 from 'heme try1.img' : 000165D0: 12 00 00 00 00 10 24 00 FF 01 1F 00 01 05 00 00 ......$......... 000165E0: 00 00 00 05 15 00 00 00 81 77 D9 74 A9 31 43 40 .........w.t.1C@ 000165F0: 8A A7 32 3F EC 03 00 00 01 05 00 00 00 00 00 05 ..2?............ 00016600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00016610: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00016620: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ from 'heme try2.img' : 000165D0: 12 00 00 00 00 10 24 00 FF 01 1F 00 01 05 00 00 ......$......... 000165E0: 00 00 00 05 15 00 00 00 81 77 D9 74 A9 31 43 40 .........w.t.1C@ 000165F0: 8A A7 32 3F EC 03 00 00 01 05 00 00 00 00 00 05 ..2?............ 00016600: 00 00 00 05 20 00 00 00 20 02 00 00 01 01 00 00 .... ... ....... 00016610: 00 00 00 05 12 00 00 00 00 00 00 00 00 00 00 00 ................ 00016620: 12 AB B6 1C EC 01 00 00 20 C6 00 00 00 00 00 00 ........ .......
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