After nine months of not having booted my Windows even once, I think it’s time to wipe the Windows related partitions once and for all and claim the space. The problem is I think the way my partitions are structured, it may not be that easy. I am assuming everything other than the two ext4 partitions will have to go. What do you think? r/linux4noobs -
Someone even suggested I nuked the whole thing and started again, which would be the absolute last resort and only when I ran out of space.


Oops. I had a wrong command there at the start on text, vgcreate is for creating volume group, not lvcreate. I edited it. That would just be a syntax error of sorts, nothing would happen with a wrong command.
USB GUI method is called ‘installer’ ;) Messing around with partitions is inherently a dangerous thing to do, no matter if you use a GUI or CLI. Today tools like fdisk or parted are pretty good at protecting yourself from yourself, but it’s still just one wrong command and your partition table is broken which will be a pain in the rear to fix.
About the default setting, there’s plenty of reasons to not choose LVM, even if it is pretty neat. For example if you have a smaller drive on a laptop it usually doesn’t add much to even have multiple partitions at all. And also LVM has a small overhead compared to ‘raw’ partitions, so if you need to squeeze the last drop of disk-io out of the system LVM might not be the right choise. Or you might prefer zfs or brtfs. All solutions have their own pros and cons.