What enables you to access and modify CMOS data?
To access and modify the CMOS data, you would need a CMOS setup
utility. Originally, in the IBM AT and a few close clones, it
required a separate utility on a diskette. However, manufacturers
soon added this utility the the ROM BIOS. So even today, all you
have to do is enter CMOS setup is to press a certain day upon
booting the system. Delete, F1, and F2 are some of the common keys
to use for entering the CMOS setup utility.