My laptop will no longer start up from a certain hard disk. It gives me the message: "A disk read error occurred / Press Ctrl+Alt+Del to restart".
When I start up the laptop with this disk, it displays the proprietary screen (as normal) then goes straight to the error message. When taken out of the laptop and placed into a caddy, the disk is fine. All files and folders appear to be accessible and intact.
The error occurred immediately after I'd converted the cluster size from 2kB to 8kB. (I've converted between other cluster sizes recently with no problem.) Unfortunately, I didn't see if there were any error messages when the process came to an end, but the conversion to 8kB appears to have been successful.
What I've tried
I've checked the entry for the partition in the Master Boot Record and (although I'm no expert) it seems fine. I've also defragmented the disk, resized the partition and created another partition on the disk, which I've read can resolve this problem. I've also run Windows’s error checking tool against the disk.
The disk in fact is the one that I'm about to upgrade to, not my current disk. (I was performing a dummy run of the upgrade.) Once the disk is up and running, I'll need to change the cluster size. The problem occurred when I was 'break-testing' the conversion tool I intend to use. (It looks like I succeeded.)
The disk is 160GB and contained only one partition of 25GB when the error occurred. The operating system on it is Windows XP Service Pack 3. I was using Partition Magic 8.02 to change the cluster size. I’m accessing the disk via caddy from XP SP3. The disk is a Samsung HM160HC.
If there's anyone here with experience of this error in this kind of situation, help would be much appreciated.