The USB drive includes: ID 04b4:6830 Cypress Semiconductor Corp. CY7C68300A EZ-USB AT2 USB 2.0 to ATA/ATAPI scsi 2:0:0:0: Direct-Access WDC WD25 00BEVE-00WZT0 PQ: 0 ANSI: 0 When I run hdparm it hangs for 15 seconds: $ time sudo hdparm /dev/sdb /dev/sdb: HDIO_DRIVE_CMD(identify) failed: Invalid exchange readonly = 0 (off) readahead = 256 (on) geometry = 30401/255/63, sectors = 488397168, start = 0 real 0m15.979s user 0m0.000s sys 0m0.008s I have the ums_cypress modules loaded. This appears in dmesg: usb 1-7: reset high speed USB device using ehci_hcd and address 2
Created attachment 23090 [details] dmesg output, plugging in the drive and running hdparm on it
That is because the device does not support the requests that hdparm made to it (I'm amazed that it did anything.) Nothing we can do about this, the device times out properly, and everything works fine afterward.