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2TB drive, several years old Pentium 4 HP dc7100 machine with v 1.05 of the C786C1 BIOS. There is an 80GB SATA drive connected already, which is recognized, the 2TB drive comes up as 0 MB in the setup utility and prevents any further startup beyond the BIOS. Got version 2.15 of the bios from HP, Circa 2008, no change in behavior.
This Site mentions that "Big Drive" (48 bit addressing) has generally been supported since 2001, giving access to drives over 137 GB
Is this a BIOS problem? Could this hard drive require a more up to date SATA controller? Where do I find what storage addressing is supported by this BIOS?
Which OS are you using? If you are not booting of the large drive (e.g. if you got Linux or BSD on the small drive and are just adding the second drive for data storage) then disable it in the BIOS. Your OS will still detect it and can use it just fine. – Hennes – 2016-08-15T22:05:43.990