[NAME] - What size is the current SSD and do you have an internal HDD too? You can use free software like Macrium Reflect to image the current M.2 SSD and save the image on an internal HDD, if you have one, or on an external USB HDD.  Be sure to include all partitions on the SSD in the image. Macrium will also let you create a bootable USB stick which you'll need after you swap in the new SSD. So create it before you remove the old SSD. When you're ready, plug the Macrium USB into PC with power fully off. Power PC on and start tapping F12 when you see the Dell splash screen. When the F12 menu opens, choose the option to boot from USB.  Macrium will load and let you move the image onto the new SSD. Since the new SSD is going to be larger, be sure to follow the instructions in Macrium to expand the size of the C: partition on the new SSD so you can use all of the available space. BTW: If you have an internal HDD, you could uninstall some apps that are on the SSD (C:) and reinstall them, but this time direct the installations onto your HDD. And, you can tell Win 10 to Move Win 10 folders for docs, photos, etc off the SSD and onto the HDD to free up space. And who knows, you might not even need a bigger SSD...
I need a much larger operating system drive, probably a Samsung 980 PRO M.2 2280 2 TB, does Dell have a program that helps you backup Windows 10 and other programs to put onto the new drive? I'm definitely worried about swapping out the OS drive because I understand I have to backup, remove SSD, install new SSD then install Windows and everything else on that one. I'm not sure how the new blank SSD will act when turning on the PC for the first time before installing the backups.
Replacing SSD in G5 5000 with larger OS drive