I have an old Asus EEE PC 701 (4GB SSD 2GB RAM) with Crunchbang and since Crunchbang development stopped, decided to try Lubuntu in it. So I made a Lubuntu 16.04 i386 bootable flash using unetbootin and a 8GB pen drive under Ubuntu.
At the system start, selecting the option Try Lubuntu without installing gives me a non-pae cpu error. Using tab I see that this option is made like this.
/casper/vmlinuz initrd=/casper/initrd.lz file=/cdrom/preseed/lubuntu.seed boot=casper quiet splash --- persistent
So I try forcepae option to boot. This will boot, but error on [ OK ] Started Update UTMP about System Runlevel Changes. To fix, we need to boot twice, first let's add nomodeset.
/casper/vmlinuz initrd=/casper/initrd.lz file=/cdrom/preseed/lubuntu.seed boot=casper quiet splash nomodeset forcepae -- forcepae --- persistent
This will take a long time to boot and the system will be very slow. Be patient, we just need a network connection. Then, open a terminal (after you connected to the internet) and type :
sudo apt-get install xserver-xorg-video-intel
Reboot and now change the grub option (using tab) to:
/casper/vmlinuz initrd=/casper/initrd.lz file=/cdrom/preseed/lubuntu.seed boot=casper quiet splash forcepae -- forcepae --- persistent
If everything is done correctly, the system should boot fine. You can make the forcepae settings persistent by editing the grub.