I’d like to install linux mint xfce 21.3 and xubuntu 24.04 alongside the already present debian 12.5, but I don’t know if I have to create the partitions before installing or if I’m guided to create the partitions while installing.
On debian 12.5 there are 3 partitions already: /boot/efi, /boot and nvme0 without a mount point, which I encrypted. I used lsblk to get this information.
Incidentally I ask: in the encrypted partition I reserved 50% of space for my home directory, created LV (logical volumes) for /var (9.2GiB) and /tmp (2 GiB) as well. Can I edit the size of these LV?
The other question is, am I installing too many distros on the same computer? CPU is an Intel Core i7-7500U CPU @ 2.70GHz
Your CPU is okay, for testing instead I recommend installing
virt-manager qemu qemu-kvm. The packages on Debian are called a bit differently.You can also just install XFCE on Debian, it doesnt interfere with GNOME.