Web Reference: Jun 16, 2015 · I understand the need to periodically "flatten" changes into a (revised) squashfs image to save space. But I'm not sure how easy it is to upgrade e.g. the kernel without doing a "Live HDD" rebuild. Jul 8, 2015 · Now I'm trying to make it use a SquashFS file as a root file system, instead of an NFS file system. The current system uses iPXE configuration as the following (relevant lines shown), and it's working fine: It covers how to prepare the base system, copy the root filesystem into a dedicated directory, create an initramfs image (including Casper boot scripts), compress the system into a SquashFS image, and finally how to set up a bootable USB drive using GRUB with the boot=casper option.
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