Can you give me some quick tips on that? I have a 50 gig SCSI drive in my A2000 and a 20 gig IDE drive in my A1200.
In NetBSD is a program called factor which helps, but you can do it manually if you like. Let's take the 50 gig drive as an example. I used to have a ton of Seagate full height 3.5" 50 gig hard drives like the ST150176LC or LW, so your might be similar. This model has 97,693,755 total sectors. Factoring that we get:
97693755: 3 5 6512917
That doesn't break down nicely, so let's round down a bit. Let's try:
97693750: 2 5 5 5 5 5 7 7 11 29
So now we can create some numbers for sectors per track, tracks per cylinder, et cetera. A good general guideline is to have less than 10,000 tracks. I'll just take:
5 * 5 * 11 * 29 = 7975 cylinders
That leaves us with 12250 sectors per cylinder which we can break down as:
5 * 5 * 7 = 175 sectors per track and 2 * 5 * 7 = 70 tracks per cylinder.
In summary:
7975 cylinders
175 sectors per track
70 tracks per cylinder
12250 sectors per cylinder
As long as the total number of sectors doesn't exceed the total size of the drive, you're good to go.