I've had no luck installing alpha 0.12 on my Toshiba Libretto SS1010 (Pentium 233MMX, 64MB RAM). It took me a long time to figure out how to install 5.9 Lite or Mini on it and the same kernel parameters just don't work for 6.0. The machine has no bootable CD and the VL installer won't recognize any of the external devices I have (USB, PCMCIA CD-ROM, CF->PCMCIA converter), none of which are bootable. I'm always stuck with a hard drive based install which barely fits. My methodology was to add the installer kernel and initrd to the /boot directory of my Damn Small Linux install and edit grub to launch the installer at boot. I also tried installing using loadlin from an itty bitty DOS partition I created. In either case the result was that as soon as the initrd was loaded the box rebooted itself.
Kernel parameters which did work with 5.9:
mem=63M vga=786 load_ramdisk=1 ramdisk_size=24000 rw root=/dev/ram
The machine actually has slightly less than a true 64MB. The problem I ran into with 5.9 was that the kernel would panic (vfs couldn't sync the ramdisk) and adding mem=63M fixed that. If I remove that parameter I run into the same problem with 6.0. The vga=786 specifies 640x480, which is all the little 7" screen can handle. The rest is pretty standard when using loadlin and VL.
If you have any clues what might be different about the current initrd.img and what I might try I'd certainly be willing to do some more testing. VL 5.9 LIght runs pretty darned well on this 10 year old itty bitty box but was very cramped for space. The Mini build works much better and I hope to remaster 6.0 Light to create a new Mini build.