External hard disk

[shankly769]

hello,i have a external hrd disk,when i plug it on its telling me that i need to format before i can use it,and i cant use it,it is dedected on the system,and when i press cancel is telling me Data error (cyclic redundancy check )is there any freeware that i can use to repair it and i dont loose all the data i have in it?

regARDS

SILVIO

 

[Acova]

Hi,

Regarding "cyclic redundancy", having done a quick scan on it, it seems to be some error checking thing that can tell if the raw data got accidentally changed on drive. At this point you must carefully consider your data's survival chances if you attempt fixing it without prior back up. It is probably best to back up an existing raw data on the drive before trying to tackle the problem itself - so to avoid some extra other possible damage.


In case you would like to attempt to recover data saved on that drive, but Windows doesn't seem to work out for you, you could try accessing the drive via other OS, for example, Linux based one.

In past I did data recovery via ddrescue (which is based on Linux: Best method/tool for cloning a failing HDD for Data Recovery? Solved - Page 9 - Windows 7 Help Forums ), and recently I did so via LinuxMint (suggested by mrjimphelps : Windows corrupted External Drive's data structure (inaccessible drive) Solved - Windows 7 Help Forums ).

If you decide to get it done via LinuxMint: once you are booted to OS, plug it in and in browser, see if the drive got mounted.

If you go by ddrescue: you will have to do some command line input (as well as some extra reading about stuff, otherwise, you may endanger your drive to the wrong function called), like to tell the system to mount the drive and etc. All relevant info is already provided in those sources/references mentioned earlier.

If in doubt, ask more.

 

[shankly769]

hi thanks you all for your help,i tried one simple thing,restarted in safe mode and laptop read it ,but i have to wait for my pc as its in a technician hand to try to resolve the shutdown problem mentioned in another tread,

but i dont think i can do this because today as i returned from work i found the hard disc on the floor,no one in home saw or know whats happen,maybe i have a ghost,not even no one tried to say something than i dont know,when i switched it on,there no power at all.