Upgrading 2012 MacBook Pro

I’m looking to upgrade the os to Ventura or higher for a mid 2012 MacBook Pro. I’ve watched a YouTube video on using open core legacy patcher. The part where I’m unsure of is… can I install the new os onto an existing ssd without having to completely wipe out/format the drive? I have a large amount of files on the drive that I’d like to keep and don’t have an external drive to transfer to.

If yes, are you able to give me instructions on how to do that. Thanks!!!

submitted by /u/friesandfood
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