Linux Articles listed under "squashfs"
The following tutorial will show you how to install Pendrivelinux V1 Full Blown (non compressed) to an external USB Hard Drive (Rotating Platter, not a USB flash drive or flash memory stick) via Pendrivelinux V1. To do this, we create an ext2 partition on the USB Hard Drive. Next we extract or decompress filesystem.squashfs, add a Grub Boot Menu and reconfigure xserver-xorg.
This tutorial explains how to fix the Boot to Ram or "toram" feature that is currently broken in Ubuntu 7.04. Boot to Ram will enable a user to copy the entire Ubuntu live environment to system ram and run the Ubuntu Operating System entirely from there. You can then remove the CD or USB device and continue to do your work from system memory. BootToRam is also commonly referred to as CopyToRam.