Portable hard drive problems

When I plug my portable hard drive in it doesnt recognise the drive and just shows the following:
J:\is not accessible
The parameter is incorrect.

Can anybody advise?
3 answers Last reply
More about portable hard drive problems
  1. it's your portable hard drive is new? or old?
  2. Welcome to Tom's Hardware Forums!

    Type in "cmd" in the Start Search box (without the quotes)
    Right click on cmd.exe that shows up and choose Run as Administrator
    Run chkdsk command on the faulting drive

    chkdsk /F /R /X H:
    Make sure you substitute H: with whatever letter your drive is using. That’s it. The scan will take several hours.
  3. but its says that CHKDSK is not available for RAW drivers!!wat should i do?
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