Kickstart 1.2 or 1.3

[psxphill]

tons of games will not works on kick1.3 and higher
examples archon 1 y 2....one on one, and most of pre 1988 games

I've never owned a 1.2 Amiga & I don't remember any games that didn't work on 1.3, only a version of soundtracker. All the degrader utils that people used on a500+/a600/a1200 were 1.3

[psxphill]

Is it possible to boot from HD with KS 1.3?
I tried it with Minimig and it doesn't work: booting from HD works from 2.05.
Maybe it's because Minimig uses A600 IDE?

Yes, you need to build a kickstart 1.3 that includes the scsi.device from the 2.05 rom to be able to boot from an a600 ide interface on 1.3. The same thing would happen trying to run 1.3 on an A1200 or A600.
 
For 1.3 to boot from hard disk, it needs a device driver in rom for the hard disk controller. On a500/a1000/a2000 bootable hard drives that rom is on the hard disk interface card.
 
A600/A1200/A3000/A4000 had built in hard disk interfaces so their kickstart had the driver in them. Although if you added an extra interface (i.e. SCSI on the A600/A1200/A4000) then that too would have to have a device driver in it's rom to be able to boot from it.