Need some help on RAID Options

[dispn0ygonekrazy]

first I dont know shit about RAID or anything like that.
Second my friend gave me his laptop to fix because it was being a bitch and wouldn't boot it says the operating system not found and before start up there are 2 arrays array 1 is functioning while array 2 is off line. So i read some stuff online, and it got pretty confusing. and they said to ctrl + F to enter the fastboot shit w.e and delete the array and recreate it which I did and it went from offline to function. My friends laptop is capable of holding 180 gb array 1 is 60 gb and array 2 suppose to be 120 gb but got funked down to 80 when I recreated it, dont know how and dont know why. I wanted to remake that partition to 120 gb but didnt find any good shit on google or i may just be looking at the wrong stuff. But anyways carry on I tried to install the RAID controllers by using the Win XP disc I have pressing F6 b4 installation but it wont recognize that f*ckin RAID shit so im stumped I need some help.

[dispn0ygonekrazy]

See thats what I don't know. When my friend bought his laptop they came equipped with 2 different brand HDD one from seagate and another from hitachi a 60 and 80 scratch that 120 it was never a 120gb hdd, but those numbers appeared on the hdd in the utility screen before I went and deleted that array because it caused the hdd to go offline and malfunction, so on another forum they said to recreate the array with the same size as the deleted one but it never went up to 120gb so I was stumped when it only said 80gb until I looked up the item numbers online.