Re: second HD, not recognized after start up
XP or Vista? Sounds like you need to initialize the disk. Has the new disk been formatted yet?
I'm not sure if this is exact for XP, but for Vista:
Control panel -> Admin Tools -> Comp Mgmt -> Then when that window pops up click "storage" -> Disk Mgmt -> Find the HDD on the bottom list. It may be flagged already. Right click to initialize. If it gives you two choices on how to initialize it, it's the top radio button (can't remember what it says exactly).
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