Thursday, June 6, 2019

windows 7 - External hard drive not recognized in OS


my Hitashi external hard drive is not being recognized by any OS.
On windows when i go to "disk managment" section, i have the partition as "NON INITIALISED/ NON ALLOCATED". no other operation on that partion is possible


Any ideas please?


EDIT
(Copied from a comment from OP)



in fact, at the begenning, windows invite me to initialise it but when i clik ok, it says ERROR, cyclyc redondance..



Answer



From the information you added (very important) I guess Windows showed you Data error (cyclic redundancy check). message as on this screenshot:
enter image description here


In such case with a highest probability your hard disk is failing. Install some S.M.A.R.T. tools. For example SpeedFan or other. There check the health of your disk and possibly run internal test or surface check.


Cyclic redundancy check (CRC) is an error-detecting code. If data are read with errors from the drive then CRC will detect the errors.


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