So you just bought USB drives off Temu or some other e-commerce site because it was cheap. You like what you see, 32GB for 99 bucks + shipping, I guess I'll buy five.
But are you really getting a deal?
Mayhaps. But unlike the common folk I don't take such things on face value and see if we are really getting the real deal. Thankfully, Linux - in this case, PopOS - has the command line tools to check.
So get 1 USB drive to test and we install, F3
$ sudo apt install f3
F3 comes with a command line utility named f3probe, which is used to test USB flash drives for capacity.
But before we run f3probe, we need to figure what block device name the USB drive was given.
$ lsblk
As you can see, mine is sdb/sdb1
so
$ sudo f3probe --destructive --time-ops /dev/sdb
Wait for it. BTW, back up if you files in the USB before you do this.
And then be disappointed because your 99 bucks 32GB USB drive is "counterfeit". It's only an 8GB.
Oh well. I hope you didn't buy five.
Ref
- https://www.linuxbabe.com/command-line/f3-usb-capacity-fake-usb-test-linux
