Wasn't thinking I'm going to end up here.
I wanted to benchmark the speeds of a USB flash drive, which was USB 2.0. My system is
Debian bullseye/sid 5.8.7-1. I used the same method which I use to benchmark my SSD:
# The USB drive was mounted and I went to it $ cd <USB Flash drive> $ dd if=/dev/zero of=tempfile bs=1M count=1024 conv=fdatasync,notrunc status=progress
I waited and waited, but no results came out. So I thought cancelling. I did an endless stream of CTRL + Cs on the terminal, no result. I tried to safely remove the usb, but it said it was in use. So, I've pulled out the USB drive. I tried the same commands again, same result: waited some time (~5 minutes) and nothing. This time I pressed a lot of CTRL + Cs + tried to kill the dd process (even with SIGKILL) + safely remove. Nothing worked, so, I've pulled out again the USB. Next time I plugged it in, it wasn't recognized nor auto-mounted, so I couldn't access it. And that's the problem.
What I've tried?
- Plugged the USB on Windows: it is not recognized in File Explorer (no volume is mounted when I plug the USB flash drive) and its capacity is 0MB. Note: The real capacity is 32GB. Photo: USB in Windows
mkusb(based on this article), but it says: "No suitable target device found". If I plug another USB flash drive,
- Output of
tail -f /var/log/messageswhen I insert the drive:
Sep 17 16:08:08 Area51 kernel: [ 5241.197897] usb 1-3: new high-speed USB device number 18 using xhci_hcd Sep 17 16:08:09 Area51 kernel: [ 5241.346189] usb 1-3: New USB device found, idVendor=ffff, idProduct=1201, bcdDevice= 0.00 Sep 17 16:08:09 Area51 kernel: [ 5241.346194] usb 1-3: New USB device strings: Mfr=0, Product=0, SerialNumber=0 Sep 17 16:08:09 Area51 kernel: [ 5241.347399] usb-storage 1-3:1.0: USB Mass Storage device detected Sep 17 16:08:09 Area51 kernel: [ 5241.347716] scsi host3: usb-storage 1-3:1.0 Sep 17 16:08:09 Area51 mtp-probe: checking bus 1, device 18: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-3" Sep 17 16:08:09 Area51 mtp-probe: bus: 1, device: 18 was not an MTP device Sep 17 16:08:09 Area51 mtp-probe: checking bus 1, device 18: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-3" Sep 17 16:08:09 Area51 mtp-probe: bus: 1, device: 18 was not an MTP device Sep 17 16:08:10 Area51 kernel: [ 5242.354414] scsi 3:0:0:0: Direct-Access NAND USB2DISK 0.00 PQ: 0 ANSI: 4 Sep 17 16:08:10 Area51 kernel: [ 5242.355049] sd 3:0:0:0: Attached scsi generic sg2 type 0 Sep 17 16:08:10 Area51 kernel: [ 5242.386958] sd 3:0:0:0: [sdb] Attached SCSI removable disk
- Output of
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 8087:0a2a Intel Corp. Bluetooth wireless interface Bus 001 Device 003: ID 0bda:57f5 Realtek Semiconductor Corp. USB2.0 HD UVC WebCam Bus 001 Device 018: ID ffff:1201 Bus 001 Device 005: ID 0b05:1854 ASUSTek Computer, Inc. ITE Device(8910) Bus 001 Device 002: ID 046d:c092 Logitech, Inc. G102 LIGHTSYNC Gaming Mouse Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
This is the problematic flash drive:
Bus 001 Device 018: ID ffff:1201
One thing to note it's that the USB flash drive now doesn't have it's vendor and product name.