Google is useless for this, so hopefully the Fediverse can help.
I have a PC with Windows 11 on one SSD and I want to install #linux on another SSD. I don't want to touch the current primary SSD at all, just boot from USB, install Linux, set that new SSD as primary boot partition in the #UEFI #BIOS and from then on have the Linux boot manager show up and let me choose which OS I want to boot. I use Linux, but haven't set up #DualBoot in literal decades. Any tips/guides for this specific case?
@tkissing Make sure you create a separate /boot/EFI partition ON THE LINUX SSD, and not use the #Microslop one. Be aware that Windows has been known to wreck the Linux EFI partition in the past, so that's what can happen, in which case you will need to reinstall the bootloader.
Give your / partition 45-60GiB, and create a separate /home partition with the rest of the space.