Mint not updating
Use this opportunity to play with Mint to see if you like it.Using a DVD drive Mint will run slowly, but it will run quickly enough to give you an idea of what it's like to use Mint. First, make a complete backup of your Windows system.Over the years, I've had more problems with running Linux and installing Linux from DVDs from bad discs than all other causes combined.With a USB stick you can set it up with persistent storage so that you can store programs and files on the stick.When I do this, I usually give half my PC's remaining drive space to Mint.You'll be asked to choose which operating system you want to boot by default.
If you don't spot it the first time, don't worry about it. Once you get to the BIOS or UEFI, look for a menu choice labeled "Boot", "Boot Options", or "Boot Order".
With a USB stick, it runs fast enough to give you a good notion of what working with Mint is like. Installing Linux in the way I'm going to describe shouldn't hurt your Windows setup in the least, but why take any chances?
It used to be that installing Linux on Windows PCs with UEFI and Secure Boot was a major pain.
Once your PC is set to try to boot first from the alternative drive, insert your DVD or USB stick and reboot.
Then, select "Start Linux Mint" from the first menu. In this mode, you haven't installed anything on your PC yet.