OK so my bro keeps all his data, pictures and important info on 1 HHD in his laptop, he dropped his laptop and now the HHD doesn't work, i tried plugging the HHD into another PC but it cause the PC to freeze even before it boots up the os, i then tried to plug it in after the PC boots up but the disk drive is not being detected.
I opened up the HHD and the reading arm is broken but the disk is completely fine, what i wanted to ask is can i buy another one of the exact same HHD, and stick the disks from the broken HHD in the new HHD?
I think I'm right in saying that HDDs (not HHDs... :-) ) are hermetically sealed. It certainly used to be the case that a particle of cigarette smoke was about 100x larger than the gap between the read/write head and the disk platter, and so would cause a disk crash (i.e. where the arm comes directly into contact with the disk surface). (I don't know if HDDs are still made to the same fine tolerances - perhaps not, given their portability, significantly reduced sensitivity to shock etc.) Even if there's no visible damage, I would have thought the disk surface is probably pretty well knackered by now by dust contamination. And, anyway, AFAIK, no-one sells just the platter - it's simply not a user-replaceable part. As Diemmess says, you could try taking it to a data recovery service - but even then, I think you'd be out of luck as typically data recovery services work with a 'working' drive where only the data has become corrupt - not with a broken read/write head. I may be wrong, but - as Diemmess says, you're looking at expensive - like, probably, hundreds of pounds expensive.