I have 3 hard drive in same machine, Maxtor 40G, 120G, 160G. I copy a file in 200M from 160G to 120G, and it took only 20 seconds. But if I copy the same file from 160G to 40G, it took 3.5 -4.0 minutes. It is clear that 40G is very slow. 2 months ago, the 40G is not so slow.
I tested it with Sisoftware Sendra and HD Tach. The test is passed. Nothing is wrong. The randon access read rate is 15M/s, and sequential read = 13M/s.
I tried this hard drive in 2 PCs in Win2k/XP, and re-partition it , the same problem happens in 2 PCs.
The 40G still is in warrenty. If it is defective, I can get warrenty. But the test is OK, what is the problem for so slow copying?