Help with dual boot 1.3 / 3.1

[Gilloo]

Please, have a look at this
http://aminet.net/package/driver/other/anaiis_boot

You can't boot in 1.3 with 3.1 commands, but you can boot 3.1 with 1.3 commands then reassign some directories.
Don't format the 1.3 in OFS. 1.3 manages also FFS. Both systems can remain on the same partition.

[Gilloo]

I don't quite see how anaiis is relevant - it requires a subway and a USB drive, which a stock A500 doesn't have.

See the s:startup-sequence before telling insanities...

Both systems must reside in the same FSS partition... If you want to experiment other things you're welcome, but it is hard to make it easy. 1.3 commands, modified startup sequence, reassign things when you have tested the rom version is a good solution.

[Gilloo]

Hello!
I want to do a similar thing on my A500+ as well.
I never tried, but my idea would be to have a small boot partition with a version control in Startup Sequence and then redirect SYS: (if possible - I know it's the boot partition) to the corresponding partition regarding selected Kickstart (1.2, 1.3, 2.0, 3.1).
In this case no messing with C commands, libraries and so on.
Even if a common partition with SYS1.2, SYS1.3, SYS2.0, SYS3.1 directories would work in theory, remains the common file system problem (there should be PFS/SFS under 1.3 anyway).
Let me know if you have a clue...
BY!

With this
http://aminet.net/package/driver/other/anaiis_boot
I confirm the theory sys1.3 and sys3.1 on a PFS3 formatted disk.
The early commands (assign, if, ... ) must be 1.3 compatible.

It can be transposable from a boot disk to an autoboot hard disk with RDB and the following PFS3 1.3.
http://aminet.net/package/disk/misc/pfs3aio
(*thanks Toni Wilen)