External HDD does not work

I have a samsung external HDD after using it for a while I get the
message " volume// is not accessible " on all local drives. What cause
this problem??

I try many programs to solve this problem and it does not work. The
only solution is to format all local drives.


--
ahmad12

The "Power Management" tab on the device Properties of the port used to
connect the volume is being allowed to 'turn off the power to this device"
Something like:
devmgmt.msc
USB Root Hub device properties (or whatever device)
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Mark L. Ferguson
..

"ahmad12" <> wrote in message
news:...
>
> I have a samsung external HDD after using it for a while I get the
> message " volume// is not accessible " on all local drives. What cause
> this problem??
>
> I try many programs to solve this problem and it does not work. The
> only solution is to format all local drives.
>
>
> --
> ahmad12

I have a 80 GB samsung external HDD with two partitions C: & D: after
using this HDD many times I have the following message: C:\ is not
accessible The file or directory is corrupted and unreadable
D:\ is not accessible The file or directory is corrupted and
unreadable
chkdsk does not work and the file system is RAW the HDD works again
only when I format it.
Any thoughts on what's going on here and how to fix it?


--
ahmad12