2 Drives but only shows 1

Hi, I have 2 drives, both DVDs both connected and at one time were both recognised. since an engineer came to sort out my hard drive only 1 DVd drive is showing. I can swap them around so that each shows up in Devices but will not show together, anyone got a solution please.(dont want to get the engineeer back as he has bankrupted me)(Old age Pensioner)

If you're comfortable with working inside the computer, I would check to see if both drives are set to master, that is if they are IDE.

Without a physical remove I can see that they both have the jumpers in the centre of the 3 sets of pins if that is of any help to you -OMEGA- thanks.

Neither drive has been out of the case since first put in about 2 years ago, although 1 was disconected by the engineer. It was when i replgged the drive that i found it did not show.

They did plug the power plug back into the drive?

Could both be master, or could be perhaps cable select, hard to tell without looking inside.

I will dismantle tomorrow and find out. All cables are connected and each on its own will be found as different drives, used to be E & D now its just D.

Both drives are set to Slave and are both plugged in as normal before Engineer came.

One drive need to be Master and one Slave or, both set as Cable Select if there on the same cable.

They are on the same cable so I will change the jumpers to CS and try again , thanks for that info.

Changed both to Cable select and both are now showing in My Computer as different drives. Very many thanks for your help.