Toshiba 500gb external hard drive error codes

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Guest

Guest
Hello,
Trying to back up my files on toshiba 500gb ext hard drive Gets to 97% then fails. Also noticed error code 800x70020. Help!!
 
I can't find any reference to those particular error codes - Google search returns nothing.

Test the drive with diagnostic software from the drive manufacturer. Toshiba don't have their own diagnostic software but you can use Seagate's software instead. It's called "SeaTools for Windows" & you can get it here: http://www.seagate.com/support/downloads/seatools/