VMS Online Documentation Library Disc 1 of 1 July 1989 AG-NC67C-RE Volume lable: CD_DOC_83334 Imaged using ddrescue GNU ddrescue 1.23 on 5.4.0-58-generic #64-Ubuntu SMP Wed Dec 9 08:16:25 UTC 2020 x86_64 Recovered using a TSSTcorp CDDVDW SH-224BB (rev SB00) Note: some data NOT recovered. $ ddrescue -r5 -v /dev/sr1 CDROM-AG-NC67C-RE-1989-07-VMS-CONOLD.iso CDROM-AG-NC67C-RE-1989-07-VMS-CONOLD.map GNU ddrescue 1.23 About to copy 205199 kBytes from '/dev/sr1' to 'CDROM-AG-NC67C-RE-1989-07-VMS-CONOLD.iso' Starting positions: infile = 0 B, outfile = 0 B Copy block size: 128 sectors Initial skip size: 128 sectors Sector size: 512 Bytes Press Ctrl-C to interrupt ipos: 205198 kB, non-trimmed: 0 B, current rate: 0 B/s opos: 205198 kB, non-scraped: 0 B, average rate: 28807 B/s non-tried: 0 B, bad-sector: 92160 B, error rate: 170 B/s rescued: 205107 kB, bad areas: 23, run time: 1h 58m 40s pct rescued: 99.95%, read errors: 1246, remaining time: n/a time since last successful read: 42m 50s