Hello. A few days ago I've inserted my pen drive on a Linux Mint computer. The pen drive was recognized OK by the computer. I ejected it and I inserted it again on another USB port. The pen drive was not recognized by the computer. I've plugged it on my Windows 8.1 64 bits computer but it is not recognized. I cannot format the drive. I can see the drive on Explorer but the file system is "unknow".
I would thank some suggestion.