The A600's ROMs versions are:
37299 or less: no support for IDE (although there is a funccional IDE on the motherboard);
37300: up to 40Mb IDE hd (I had one A600 with this exact ROM and a 2Gb hd running in it, don't ask how);
37350: up to 2Gb hd.
Those up are ORIGINALS. 3.0 (39106) 3.1 (40.068) are later upgrades (you buy one of those babies easily on Amigakit, Vesalia or SoftwareHut).
3.0 recognise up to 4Gb, 3.1 the very same (other programs on ROM makes this late kickstart more usuable for today's).
I strongly sugest you look at the "purple screen" when your Miggy is turned on with no floppy in drive. What version of kickstart is on the screen?
If the version is 37300 or up, you can install a "new" IDE hd easily. Those "low profile" hds can be easily found on Ebay for almost nothing.
