memory stick not opening files

[Viorica]

   Hello! I have a problem with my memory stick ( flash  drive). It has a memory of 2GB and I have copied some files on it, representing 20% of its size. Now when I want to use this device I receive a notification that the stick needs to be formatted. If I try to do this, another warning says that all the files on the stick will be deleted. Another thing is that when I check the properties of the stick I am told that it is full, which , of course, is not true. Can you help me with hese problems? Thanks.

[quaxo]

There are several possibilities:

1) The stick is no longer good. You'll have to buy a new one.

2) The stick was not removed from the computer properly, resulting in corruption. A format will most likely be necessary.

3) Your card reader (if this is being used) is faulty.

Try the stick in another reader, on another system. If the problem is still occurring, try formatting it. If it still has a problem, the stick is probably bad.