Preparing to swap mobos. Pitfalls? Warnings? Suggestions?

I'm going to be swapping motherboards between my main desktop and my Ubuntu server. I was hoping just to swap CPU and RAM, but the 8th gen and 10th gen intel are on different sockets. So its gotta be the whole mobo.

Before I do that, I'm sure there's some steps I can take to protect my data and make sure I have access to my drives without needing to reformat anything but the OS drives.

I've read some posts about people not being able to write to drives that have been switched from one computer to another. Can I avoid that by chmod 777 everything before I make the switch?

I'll be going from Win11 to Ubuntu and vice versa. I'm switching an Asrock H370M-ITX/ac with an Asus PRIME Z490-A, if that matters at all.

Any other pitfalls / traps / dumb things I need to watch out for? Or just swap, reformat the OS drive, and remount the SATA drives?

Thanks in advance .