Here is what I would do. ( I have had 3 powerbook and changed drives in all three--but mostly because they were too small. 2 of the 3 older drives eventually failed) You have the new drive anyway. Put the new drive in the case, Clone the installed drive onto the New drive. Test reboot on the new drive. Then exchange the drives. Hard Drives are mechanical and will eventually fail. After 3 and 1/2 years it is probably time--especially in a laptop. paulatx1 at aol.com wrote: > My Ti800 Powebook is 3 1/2 years old now, and I have never had any > trouble with the harddrive or CD drive. Back in October, I noticed > there was a "growling" noise coming from the computer. It seemed to > come and go; didn't seem to matter if I had been using the machine for > hours or just a few minutes; didn't seem to matter if I was using the CD > or not; didn't seem to matter if the machine was running really hot or > not [hey ...there were times you could burn your legs through > bluejeans if you had this machine sitting on your lap]. The growling > continued and actually got more frequent and louder until February when > it began to lessen in frequency and volume. [Back in October and > November, after being hit by Hurricane Rita, getting the computer > repaired didn't seem anywhere near as important as recovering from the > hurricane.] > I finally made enough money to buy a replacement drive and I was > going to replace the harddrive this weekend. I think I have downloaded > enough "how to" articles; I already own the torx screwdrivers; I have > data backed up. I bought an external drive case to slip the old one > into to carboncopyclone the original drive back into the new one > (after the new one is formatted). > Here is what is bothering me: I downloaded and installed SMART > Reporter after seeing it mentioned on this list. It says this drive is > fine. What if the growling noise I heard was not the harddrive? The > drive in question is an IBM 40 GB. Should I swap out the drive > anyway? (I have never swapped out a drive in a portable before.) > Could it be the fan? Would the CD spin up if there was not a disk in > it? Is there some other utility I could use to let the computer > check itself? If it is something like the fan, where is the fan? Can > I access it? > Thanks for any advice. > Paula