:( I have a problem with my hard drive, secon hard drive I connected as slave it shows up in device manager but not in disk management and it also shows up in the bios, any help

Did you partiton it? Format it?

If this second hard drive is brand new, unformatted, no partition, etc. Once XP detects the new drive, a pop up window should appear telling you that the new disk needs to be initialized (i.e. initialized as basic), then it will show up in Disk Management, and let you format/partition it.