と言うか公式に出てるな 俺が下手に訳すと訳分からなくなるから原文ママ >Multi-core and multi-CPU support in 32-bit kernel > >To guarantee compatibility with non-PAE processors, the 32-bit versions of Linux Mint Debian come with a 486 kernel by default. >This kernel does not support SMP, and as a consequence is only able to detect one core and one CPU. >If your CPU has multiple cores, or if you have more than one CPU, simply install the 686-PAE kernel and reboot your computer. > >Type the following commands and reboot the computer: > >apt update > >apt install linux-headers-686-pae linux-image-686-pae linuxmint.com/rel_debian.php