Yeppers I have 2.05 roms and extra 1mb in trapdoor with clock.
When I bought my 600 it came with a hard drive already , a modified 3.5" to sit on top.
Figures during shipping the logic board got fubared.
I was able to order a replacement drive to move logic boards and hope it works.
Its only a gig'er but has adf2disk and stuff on it which I dont want to loose.
I just ordered a 4.1 gig laptop drive for inside and a 2.5" ribbon cable from apple to make connection short.
Next I will add 3.1 roms probably.