A USB flash drive can be used to store and
transfer data when it works properly. However, data will get lost or
inaccessible from a USB flash drive when it has errors. USB flash drive errors
can be different in types, which includes USB drive not formatted error, USB drive is uninitialized, flash drive can’t be
detected, I/O error, etc.
Those errors are usually caused by virus
attack, bad sectors, bad USB port, and more reasons. Any way, as long as those
errors are not caused by USB flash drive physical damage, you can fix any of
the error above as well as its data back.