Hi Macca,
The best hard drive to use with an Amiga 600 computer is one that is less then 1 gig. I find these drives in old laptops from my local Goodwill. I can usually buy the whole laptop for less then $15.00. The 2.5" hard disks in these old laptops are perfect for an Amiga 600. I have never had any problems formatting them and they work really well. When it comes to the Amiga, you can not think of it in the same way as a PC. PC computers waste a lot of memory and hard drive space because of sloppy programming. The Amiga computer does not waste memory or hard drive space because the programs are programmed much better and for a much better processor. Have you ever wondered why it took over 10 YEARS for the PC clone computers to finally catch up to an Amiga 1000? Or have you ever wondered why an Amiga 2500 with a 68060 board OUT-PERFORMS a Pentium III PC computer? What I am trying to say is that with a PC you would need a 12 Gig hard drive, but with an Amiga computer you only need a 1 or 2 Gig hard disk. Remember, Amiga programs are smaller in size but do the same amount of work. :-D