i have installed my old 40G harddisk to my PC. (being my new 80G harddisk as primary master). I also upgraded the memory to 512.

the problem is .. i suppose my PC cannot RECOGNISE the primary slave giving prompt Slave: None.

I think i installed the Harddisk properly by fixing the grey-colored jumper to the slave.

i believe the HARD disk is in good condition as when i set it as master it works well.

i have not formatted the slave coz i think i can do it later (after i have installed it). i have all the operating softwares, Windows programme, thousands of files installed in the slave (which is yet to be a slave).

i'm so not good with hard disk installation and am requeting for information/assistance from anybody to help me with this problem. :'(Well I recomend SIMPLY setting your ORIGINAL HDD as the PriMaster and the new HDD as the PriSlave. Besides it might mess with your ability to boot your computer if you set your HDD with the windows installation to your slave if it was the master when you installed.