How can I find the file system type of USB drive without using computer.
Drive is attached to Android phone and I can see the files in it.
I want to know if it is extFAT etc
It is a dual 128gb sandisk ultra USB drive
You can use
mount command in Terminal Emulator app. In the output, look for the line starting with
/dev/block/vold. That line would have the filesystem type next to the word type. This would help as long as the USB drive's filesystem is mounted by Android.
If you have root access, you can issue the command
blkid. This works, regardless, whether the USB drive's filesystem is mounted or not.