no media detected on a usb flash drive

I have a Kingston DT MicroDuo 3.0 and it was working fine till it didn't mount on Windows, Mac nor Ubuntu

It appears in the disk utility as /dev/sdd and in the volumes area it shows no media detected

I tried sudo fdisk dev/sdd/ but got

fdisk: unable to open dev/sdd/: no such file or directory

and then I tried sudo umount dev/sdd/but got the error:

umount: dev/sdd/: not mounted

It doesn't matter if I need to format the drive, but I need it back into a working condition.

1 Answer

These are all the symptoms of a broken USB stick. Please replace it.

To be absolutely sure that it is indeed broken, install the smartmontools package:

sudo apt-get install smartmontools

then run:

sudo smartctl --all /dev/sdd

and depending on the error message you'll know for sure that it's broken.

Sorry to be the harbinger of bad news