USB flash drive appears only in lsusb
I have a 64GB USB 3.0 flash drive that is not detected automatically. It only appears in the output of the lsusb command.
Bus 004 Device 009: ID 1f75:0917 Innostor Technology Corporation The output of dmesg:
usb-storage 4-2:1.0: USB Mass Storage device detected
[12196.233216] scsi host9: usb-storage 4-2:1.0
[12217.986180] usb 4-2: reset SuperSpeed USB device number 8 using xhci_hcd
[18587.882254] usb 4-2: USB disconnect, device number 8
[28646.482672] usb 4-1.3: new SuperSpeed USB device number 9 using xhci_hcd
[28646.497517] usb 4-1.3: New USB device found, idVendor=1f75, idProduct=0917
[28646.497520] usb 4-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[28646.497522] usb 4-1.3: Product: USB DISK
[28646.497525] usb 4-1.3: Manufacturer:
[28646.497528] usb 4-1.3: SerialNumber: 15081333000027
[28646.499445] usb-storage 4-1.3:1.0: USB Mass Storage device detected
[28646.499516] scsi host10: usb-storage 4-1.3:1.0
[28668.551570] usb 4-1.3: reset SuperSpeed USB device number 9 using xhci_hcdAs you can see, no device is assigned.
Is there any possibility to get access to this USB or, if it is corrupted, to repair it?
All of the tools that I found require access to the USB.
11 Answer
USB 3 devices are sometimes tricky, and do not work with some combinations of operating system and computer hardware. So it is a good idea to try in different USB ports and in different computers, if possible also with Windows or MacOS.
The tools that I know, need to see a USB pendrive as a mass storage device (typically /dev/sdx), where x is the drive letter a or b ... You can search for the drive with the following commands
sudo lsblk -f
sudo lsblk -mBut it is not necessary to be able to mount it (and see the file system) in order to repair it. You can try to wipe the first megabyte with mkusb. See the following links
If wiping the first megabyte does not work in any USB port of at least two different computers, it is probably damaged beyond repair.
