I have bought three HP/Compaq D510 desktop units to use as servers: one at home, the others at friends' places, for remote backup, bittorent, running freenet nodes, etc.
They seem ideal. Available for £30 on ebay. I have flashed the latest BIOS (2.21), added max RAM (2GB), SATA card and large SATA HDs to each of them.
I am (trying to) use a CF card with IDE adaptor for the OS (CentOS minimal).
This works fine with 2 of the 3 boxes. Although they are ostensibly identical, the 2 on which it works are "HP" on the factory barcode label, and the one on which it doesn't work is "Compaq". The baked in asset no's are also of a different format.
On the Compaq I can install the OS to the CF card, but it will not boot. System hangs at "Attempting to boot from hard drive (C
So it seems there are subtle differences between the Compaq and HP models. In addition, I cannot get the Compaq one to boot without a keyboard.
I have checked all the BIOS settings. I have diff'd the output of dmidecode, and they are the same excepting asset numbers.
I have tried to "Save to Diskette" the BIOS settings from a working HP, but every time I get a BIOS message saying "Removable Media is bad or missing". I have tried four floppies, and while they may all be degraded through age, I don't think so.
Does anyone know if there are in fact differences between the HP and Compaq versions, or have any ideas about what else I could try?