cannot attach a new hard drive with an existing one

[spyder]

I have a compaq presario with P-IV 1.9 Ghz 256 MB RAM running win XP.
whenever I try to attach another hard drive , it first asks to save changes (when I restart) and then a message appears "Non system disk error".
The PC doesn't boot till I remove the hard drive.

[Techmastro]

Did you make your second hdd as slave

[Huzefa]

use the jumper switches and read the instructions printed on the top of the HDD One has to be master rest all have to slave

[hack expert]

well follow the jumper setting mentione and wen u start go in BIOS and check wether the harddisks are configured properly then u can start

[spyder]

Please can any1 explain how to set the new hard drive as slave.

[vijay_v]

The jumper settings are printed on the cover which is on the top of the HDD....

set ur jumper accordingly so that HDD becomes a slave... then connect it to your computer

[spyder]

I would like to thank :
techmastro
huzefa
hacker
vijay v
Thank you veerrrryyy much.