Can I Have Two Operation Systems On The Amiga

[Homer]

I use this for backing up my workbench partition. Copy the whole partition into another bootable partition, and choose which one to boot from in early start up as mentioned before. Then you can change anything you want without breaking the OS  :lol:

[pVC]

sim085 wrote:
Also can I have two bootable partitions of the same operating system?

Yes, as many as you want. You can set any partition as bootable and can have own setups for each. What's on others doesn't matter.

I for example have main system partition and then backup partition (which is actually a mirror of main partition) and I can boot from both. If main partition breaks for some reason, then you can boot from backup and fix main or copy backup to main.

One thing you maybe should keep in mind that it might be better not to use direct device names for settings. For example, don't use dh0: for assigns and (programs') paths when referring to boot partition. Use SYS: instead. SYS: points always to the partition from you've booted. Then everything will be loaded from selected partition even if it's dh0:, dh1:, sdh4: or myownhd:.

[sim085]

Thank you very much that last peace of information is very important

[Zac67]

Actually I've been using 1.3 and 2.04 on A500 and later 2.04, 3.0 & 3.1 on A3000 on a single partition. You just have to query the exec.library version in the beginning of startup-sequence to find out which ROM is active and assign C:, LIBS: etc. to the appropriate subdirs. Of course this doesn't have to depend on the ROM present but can also be used with ENVARC variables, so could just shell command
setenv envarc:OS 3.0

;-)

[CLS2086]

I'd sure like to know how you did Workbench 1.3 installed on an A1200. As soon as you go to a 1.3 kickstart, you lose access to your hard drive.

I don't use a softkick, I just "copy all" the WB1.3 to a small 20mb FFS partition for some old games.

[Ilwrath]

I don't use a softkick, I just "copy all" the WB1.3 to a small 20mb FFS partition for some old games.

So you're booting Workbench 1.3 on a 3.x ROM?  I didn't even know that would work...  Is there actually any compatibility benefit to doing this, though?  I thought pretty much every game that barfed on 3.x did so because of the ROM, not because of Workbench.

When you switch to a 1.3 ROM, you lose the A1200 scsi.device (on-board IDE driver).  Filesystem on the hard drive doesn't matter, as no hard drive controller drivers exist in 1.3 ROM.