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How to create a bootable system with a SquashFS file?
Create a squashfs file from a bootstrapped or running ubuntu filesystem with whatever packages you want available. https://help.ubuntu.com/community/LiveCDCustomizationFromScratch provides good instructions for creating a debootstrapped system to build on. Format the target drive with ext2/3/4 and enable the bootable flag.
Can you create a new SquashFS from an existing SquashFS?
What I would like to do though is take an existing squashfs, a set of files and create a new squashfs which is identical to the old one except that the files in the set either replace similar files in the squasfs or are just added if there is no similar files. OK, that last part sounded weird. So let me give an example:
How to boot using a SquashFS image as rootfs?
Pretty much any will do, but you’ll need the squashfs file-system kernel module (if its not already compiled into your kernel) in your initramfs image. Most initramfs systems respect fstab – and definitely Dracut does. And so you can just configure two /etc/fstab files – one in your .sfs image and one in your initramfs image.
Is there a way to overwrite a SquashFS file?
I want to create a new squashfs which is identical to the old squashfs – except that there is a new file a/b and I overwrite the ./a/foo with one of my specification. you can append new_or_modified files_dir on a squashfs_file without unsquash nor cpio mounted_squashfs as above.
How to create a squashed root file system?
The following steps are required to create the squashed root file system image: $ sudo rm /media/ck/rootfs/aafirstboot $ sudo cat /media/ck/rootfs/etc/rc.local #!/bin/sh -e # # rc.local # # This script is executed at the end of each multiuser runlevel. # Make sure that the script will “” on success or any other # value on error.
How do I mount a squashed file system?
Now, to mount your squashed user home directory at system startup, you can do as follow: Make squashfs and unionfs modules loaded at boot time. Change the owner of the writeble branch to match user1. Add these lines to /etc/fstab file to mount squashfs and unionfs at boot time.
How to squash a file system on a CD ROM?
Squashed file systems on CD-ROMs 1 Enable SquashFS in the linux kernel of the target system 2 Create a squashed root file system 3 Modify the /etc/fstab or startup scripts of the target system to mount the squashd file system when you need it More