Encrypted Hard Disk troubleshooting I have problems to read an encypted  hard disk. Unfortunatly I do not remember if I did encryted with Time machine or Disk Utitlity. I think I did it with the first one (Time Machine) as I used the disk as a buck up. 

The issue is that When I plug it in it asks me for a password as soon as I write it it blocks or freeze. I have no problems remembering the password. it is no a problem with the Capitals tab.

I would apreciate any help - I have lots of files other than the back up. Fotos, movies, etc, necesary for a documentary . 

I have a Macbookair 2011  1,8 GHz Intel Core i7. Mac os 10.7.5
The hard drive is a 2TB WD Elements. Mac formated.
You must have enabled FileVault,
therefore your disk this
encrypted, you go to: System preferences / security and privacy / FileVault.
if enabled it so you disable,
it should take some time
why he will decrypt your disk, then restart and everything returns to normal.

for more information: https://support.apple.com/en-us/HT204156