posted on Sep, 24 2016 @ 03:52 AM
a reply to: Azureblue
Sometimes the problem with an external drive is not actually the drive, but the USB interface and cables.
It takes a reasonable current to spin mechanical drive up and actuate the heads. A dodgy cable may supply enough to spin the drive up but may be
intermittent causing CRC errors.
Also, there is only a single serial data interface. If connections are intermittent, CRC errors would occur.
It is possible to remove the drive from the enclosure and connect it directly to SATA cables on a desktop PC. If the problem is the USB interface,
this bypasses that and will allow you to access your data. An additional advantage is that SATA is usually significantly faster than USB.
Should the drive still not give up its data, it may be a failure of components on the logic board of the HDD. If the drive spins up, and you can hear
the heads seeking prior to powering back down, then the mechanics of the drive may be OK. If you buy exatly the same make, model and capacity HDD you
may be able swap the logic board from the new drive onto the old drive and recover your data (note that it is important that the drives be almost
identical, you can't use different drive geoetries and types). In a worst case scenario, the data may still not be recoverable by yourself but you do
have the additional new HDD once the logic board has been replaced.
Of course, there are no guarantees but if you are careful you won't do damage. It is still wise to ensure the alignment of logic board/s is exactly
right before tighteneing any screws.