
So the Windows is installed on the 256 SSD, and I want to install the Pop!_OS on the 512 SSD. I've ordered this model with two SSD hard drives, with the intention of keeping the Windows on one of them and installing Pop!_OS on the second one: So a little bit about my situation - I just bought Thinkpad X1 Extreme, which, of course, came with pre-installed Windows.
Just installed Pop OS on a separate hard drive and can not get back to Windows. Again, reference posts, this time from this subreddit: From my understanding (I am Linux noob in every way) despite the fact that Pop!_OS is Ubuntu flavored distribution, it uses different bootloader (Ubuntu uses GRUB while POP!_OS uses Systemd-boot), which caused some problems for many unexperienced users, like myself. The problem with those resources - as great as they are - is that they describe the whole process for Ubuntu.
How do I install Ubuntu alongside a pre-installed Windows with UEFI?. Dual Boot Windows 10 and Linux Ubuntu on Separate SSD - marmayogi's answer. Dual Boot Windows 10 and Linux Ubuntu on Separate Hard Drives. I want to preface this post by saying that I did my research thoroughly on what is the recommended way of installing the two operating systems in question alongside one another.