On 2021-12-29 12:12, Dave Howorth wrote:
I'd like to [finally] install 15.3. I want to install it separate to my existing system so I can revert to my existing system in the event of problems. I'm having trouble finding a clear set of instructions.
Grab this from the downloads page: openSUSE-Leap-15.3-DVD-x86_64.iso Install the iso to a USB stick using Imagewriter; install package imagewriter from YaST if it is not already on your system. Decide now, before you start, just how you want to partition the system to take the new 15.3 install. Reboot from the USB you just made. Choose new install, and carry on. When you get to the point of selecting the install partitions, choose "custom partition" (or whatever it's called); do NOT let YaST decide for you where to put the install, as it will probably want to overwrite your 15.2 system. You will be able to choose an install from the USB only, or to install from the net. I recommend you do the latter, as this will bring in all the necessary repos, including iirc stuff like Packman. This is basically the same as installing openSUSE for the first time on a brand new system, so you will have to choose all the software you want (and get rid of all the recommended stuff you don't want) during the software selection process.