Hi I recently unpluged 1 of the IDE cables that was attached to one of my hard drives as I needed to attach my friend hard drive to translate data from him. I have to do this as I all ready have 3 hard drives installed on my PC + a dvd writer Any way I have just re-attached my hard drive and it isnt showing up in "my computer". i have gone to device manager and the hard drive is showing up under "disk drives". any ideas on what I need to do >> ??

Since the HD was out and back in, check to see how it's identified in BIOS. If the geometry is different than when it was partitioned, it will show as a drive in device mgr but the partition will not show. Hence no drive letter. If at first you don't succeed, you're about average. M2

Yep also the thing may have gotten confused on master and slave settings.

I returned the hard drive as it was before. Then I tried different computer and different setting for slave and master. nothing work. any more idea. please....

So you checked to see in the bios if it sees it? Another thing you might want t ocheck try taking out another drive and plug this drive into where the 2nd one was. Make sure it still works and you didn't damage the drive in the swap, if that works than what you can do is this. 1. the 2nd drive you took out make that CS on the jumper settings. 2. the 3rd drive that you said was out and didn't work if you tried it on the 2nd place and it worked than change the jumper to that to slave. 3. boot up windows and look in the mgr settings and see if the drive letter shows.

Windows might be picking the disk up as "Foreign" since it was removed and another disk put in its place for a short time. Do this: Right click My Computer > Manage Click "Disk managment" under Storage. Is the disk showing there? Does it have the word Foreign beside on it? If so, right click the disk and click "Import Foreign Disks" and it should show up.

I did what you said and yeah the disk is not initialized but there is no such an opation as "Import Foreign Disks".