I have a 300 gig Maxtor One Touch II external USB II harddrive from about 2005 which has recently failed, and I have successfully put an older, smaller disk in there to make sure that it is the disk itself rather than the controller which has failed.
Rather than buy a completely new external drive, I am inclined to buy a bare disk and put it back in the enclosure.
My problem is, these days it's quite hard to find a 300 gig disk where I live - I'm much more likely to be able to find a terabyte and up - budget wise that's not a problem, but I don't know whether the enclosure's controller is up to the job.
Is there a limit on the size that a controller for a particular interface can handle? Is there a way to find out what it is?