|First I believe though you are connecting the drive as a slave on the primary IDE cable you are NOT updating the BIOS to look for it. That is why you are not seeing it.|
So before you try my suggestion, leave the drive on the primary cable correctly jumpered and set up your BIOS to expect a hard drive on the drive 1 position. See details below:
OK first the link below points to your manual on the Dell website. So use it as a reference:
1. Connect the disk correctly jumpered on the second connector of the primary IDE cable. As you already should have it now.
2. Turn on (or restart) your computer.
3. When the blue Dell™ logo appears, press <F2> immediately.
You should now be in the BIOS. See the manual online.
Among the entries you will see the following four entries:
Primary Drive 0 ....................Hard Drive
Primary Drive 1 ....................Off (Change this to Hard Drive)
Secondary Drive 0 ................CD/DVD
Secondary Drive 1 ................Off
4. Save you changes and exit (F10) from the BIOS.
5. You PC will reboot and now your hard drive, if it is correctly jumpered, will be detected.
Once you have finished what you want to do with the drive, if you remove it, then you will have to change its BIOS setting to OFF otherwise you will get error messages complaining that there is no drive attached to it.
Alternatively - Only do this if the above did not work
IF you want to use the secondary IDE cable, then it will normally be connected to your CD/DVD ROM drive.
Take it off and attached it to your temporary hard drive. Don't forget to also connect the power supply cable.
Again you have to go into your BIOS and change CD/DVD to hard drive against
Secondary Drive 0.
If you do it this way then remember to set the settings back to CD/DVD after you remove the hard drive and put the CD/DVD back in.
☺ When everything else fails, read the instructions.