id summary reporter owner description type status priority milestone component version resolution keywords cc 1056 "2 KiB too large ""User Capacity"" reported for Toshiba MQ03UBB300" Pro Backup "Due to ddrescue: Write error: No space left on device, I spotted a difference in the smartctl reported user capacity, and the actual user capacity. Reported user capacity: 3000592982016 Actual user capacity: 3000592979968 Difference: 2048 bytes {{{ # smartctl -q noserial -x /dev/sdd smartctl 6.6 2017-11-05 r4594 [x86_64-linux-4.17.10-1-ARCH] (local build) Copyright (C) 2002-17, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Toshiba 2.5"" HDD MQ03UBB... Device Model: TOSHIBA MQ03UBB300 Firmware Version: JP050U User Capacity: 3,000,592,982,016 bytes [3.00 TB] Sector Sizes: 512 bytes logical, 4096 bytes physical Rotation Rate: 5400 rpm Form Factor: 2.5 inches Device is: In smartctl database [for details use: -P show] }}} " defect closed minor smartctl 6.6 invalid