OS: Windows XP SP2 I've just changed my original dvd drive for a dvd rw drive. It's dual drive, the other is cd rw and before installing both the drives were working. After changing the dvd drive to a rw drive, now the cdrw drive can't be found. It isn't displayed in device manager, though the new drive is. Also in properties for the drive it says it's in location 1 of 1, any idea why it no longer recognises the second drive? Any help much appreciated. Thanks Michael. EDIT FURTHER DETAILS: Always post only some of the details, heres the rest The drive has power going to it, opens, you hear it spining the cd, the light flashes, I plug in my memory stick and it gives it drive letter F, the letter e is not assigned though this is what the slave in the dual disks used to be. Trying to access it in dos gives a cannot find the drive specified error. Any ideas?