|"take it apart and remove the small battery and or clear cmos."|
OP is asking about a hard drive password. There is no small battery or CMOS in a hard drive and if you take one apart you wreck it.
Even a bios boot password on modern laptops cannot be removed that way.
the only solution for laptop passwords is to convince the manufacturer that you own it and send it to them to unlock.
Goin' Fishin' (Some day)