I want to play Minecraft on my PC but save it on the discs is that possible?
Define "discs" then maybe you can help.
Do you mean HDDs or SSDs or CDs or DVDs or floppy disks?
In general, you are allowed to make backup copies of purchased games, theoretically this should also apply to digitally purchased games.
I just do not understand why you want to burn Minecraft on a CD.
After all, you have to verify yourself via the launcher on the Internet.
But in general yes, first download the version you want to play, burn your .minecraft folder to your CD (I recommend you rather an external hard drive or a USB stick) and pack the launcher on it.
Now you only have to change the path of .minecraft when starting the launcher. Then everything should work
Well, let's leave the disk outside: DD