I noticed something that might point on the problem. the peripheral qualifier of the HDD logical unit (LUN) is 'PQ:1'. That means that the LUN is currently disconnected (that is according table 46 in http://www.staff.uni-mainz.de/tacke/scsi/SCSI2-08.html).
That obviously not true as the HDD works out of the box under windows. For some reason the scsi driver thinks that LUN is disconnected. The question is how windows can see that the LUN is connected and linux cannot? I have more information about this HDD: 1. opened the enclosure and found that it consists of: * Toshiba 2.5" HDD MQ01ABD050 * USB bridge. It is based on ASMEDIA chip - ASM1051. 2. I was able to get some information about the HDD by using the command: **# smartctl -a -d sat /dev/sg2 smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.12-1-amd64] (local build) Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Toshiba 2.5" HDD MQ01ABD... Device Model: TOSHIBA MQ01ABD050 Serial Number: 722ESCR3S LU WWN Device Id: 5 000039 425c803db Firmware Version: AX002J User Capacity: 500,107,862,016 bytes [500 GB] Sector Sizes: 512 bytes logical, 4096 bytes physical Rotation Rate: 5400 rpm Device is: In smartctl database [for details use: -P show] ATA Version is: ATA8-ACS (minor revision not indicated) SATA Version is: SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s) Local Time is: Tue Jan 7 14:22:04 2014 IST SMART support is: Available - device has SMART capability. SMART support is: Enabled [...] Ido -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org