Один из комментариев (см. url):

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6 virtual terminals is a lot if you don't use them, but if you're working in
text mode (as I sometimes do on my very tiny laptop), it's nice to have. Rather
than commenting them out, you could change the inittab to:

1:2345:respawn:/sbin/mingetty tty1
2:2345:respawn:/sbin/mingetty tty2
3:23:respawn:/sbin/mingetty tty3
4:23:respawn:/sbin/mingetty tty4
5:23:respawn:/sbin/mingetty tty5
6:23:respawn:/sbin/mingetty tty6

which will give you 6 virtual consoles in text mode runlevel 3, but only 2 when
X is up in runlevel 5.
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Возможно, разумно.  Особенно если получится подвязаться где-то к определялке
установленной памяти...