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USB Mass Storage has its own command set. Some newer USB3 adapters do allow SCSI commands to be passed through using UASP, but not all do.
by duskwuff 7y ago
USB Mass Storage has its own command set. Some newer USB3 adapters do allow SCSI commands to be passed through using UASP, but not all do.
- bayindirh 7y agoSome, if not most, USB2 to SATA/SAS bridges also allows passing these commands. smartctl can talk with most of the bridges to pass-thru commands, at least for SMART purposes. Seagate's 3.5" Backup Plus Hub drives mask the disk itself intentionally to show itself as a different, generic Seagate device, probably to prevent people from messing with the disk settings and identifying the disk itself.
- pavon 7y agoAnd even if they support it, it isn't always safe to do so. For example, I have a WD Passport sitting on my desk that was bricked when I issued an ATA secure erase command[1]. Don't assume that any SATA/SCSI commands are safe to issue to USB drives unless you have researched it. [1] https://ata.wiki.kernel.org/index.php/ATA_Secure_Erase https://ata.wiki.kernel.org/index.php/ATA_Secure_Erase
- dreamlayers 7y agoProbably the USB interface keeps some data for its encryption function on a part of the hard drive which it makes inaccessible. You erased the whole hard drive, including that part, and probably caused the USB interface to malfunction.
- deleted 7y ago[deleted]