unixabg / remaster-iso

Set of scripts to remaster Debian iso images.

remaster-iso

Set of scripts to assist remastering an iso image with custom settings for Debian based systems.

Generic steps would be something like the following:

# clone the project
git clone https://github.com/unixabg/remaster-iso.git

# move to our remaster-iso directory
cd remaster-iso

# download the debian based iso we want to remaster
wget http://somepath.blah/theIsoYouWant.iso

# extract the iso
remaster-extract -i theIsoYouWant.iso

# make modifications to the squashfs things
remaster-squashfs-editor

# compose the iso back together
remaster-compose

remaster-iso's Issues

How to update the live kernel

I know this is not really an issue of remaster-iso but a request for help. I remastered a Debian "buster" iso without problems: Packages in the squashfs were updated, customizations were made, kernel 5.x was updated taking it from buster-backports.
A question though: how can I also upgrade in a clean way the kernel of the live part of the iso?
Thanks in advance for any hint.

Squashfs read errors on ISOs of more than 2 GB size

Once remastering an ISO to the point where final ISO becomes larger than 2 GB, writing image on a USB drive results in squashfs read errors, and USB cannot boot into the live desktop. I have used multiple tools to burn the iso images including balena etcher, ventoy , usbdiskimager etc, but same result. ISOs are based on Debian 11. Also most frustrating is that once the same ISO is booted in a Virtualbox session, it boot up normally. I have changed USB and all but issue is persistent. Please help in resolving the issue.