does your PC detect the HD at all when using Auto Detection? I guess so as you where able to format it and copy files to it.
Some HD's need to be set to Custom when the BIOS is too old to detect them properly and as Quantex took Chapter 11 in 2000 it will depend on your HD if the BIOS can detect it fine.
What I usually do is to look for the HD parameters and note them down or search for them in the web.
In case the drive is not detected I try to set them as Custom parameters and play a bit with the avail parameters.
I found a BIOS compendium on the web that helped a bit to decipher the settings on the BIOS as every manufacturer has it's own style a bit.
If the HD is clean and empty I usually leave the boot order to HD 1st and CD 2nd as the BIOS will switch over anyway to the CD in this case and I do not need to change boot order again.
In your case you should change the order as it will speed up the boot process.
If you could post your HD details and BIOS settings for the HD we can take a look and may help you.