Ubuntu 23.10 boot up procedure improvements

Here is the way to rebuild the Bodhi Linux 7.0 distribution image to make it bootable on low-RAM computers. I assume that the fresh installation of the Bodhi Linux 7.0 (not upgraded!) is used as the working environment. You need 3 Gb of free disk space and two shell script from the package bl70-lowram.tgz (https://static.xakep.ru/attach/bl70-lowram.tgz).

1) Install the required software:

$ sudo apt update
$ sudo apt install zstd genisoimage2) Copy the distribution image contents to the directory ./isofs:

$ mkdir ./isofs
$ sudo cp -R /mnt/iso/. ./isofs
$ sudo chown -R $USER:$USER ./isofs
where /mnt/iso is the mount point of the original distribution image (by default it can be /media/'Bodhi Live CD').
3) Execute the shell script repack_initrd.sh from the package bl70-lowram.tgz:

$ /bin/sh repack_initrd.shA new minimal filesystem image will appear in the file isofs/casper/initrd.zst
4) Replace the old minimal filesystem image with a new one:

$ mv isofs/casper/initrd.zst isofs/casper/initrd.gz5) Execute the shell-script make_iso.sh from the package bl70-lowram.tgz:

$ /bin/sh make_iso.shA new ISO image will appear in the file bl70_lowram.iso

Use ISO image bl70_lowram.iso instead of the official distribution image for low-RAM computers!

P.S. Here is a patch for repack_initrd.sh to remove the host operating system dependency so it can be used in Bodhi Linux 6.0.
repack_initrd.patch:

51,53c51,52
< -exec rm '{}' \;
< echo 'Update modules dependencies.'
< depmod -ab $INITRAMFS
---
> -exec mv '{}.zst' '{}' \;
>

Have you got a GitHub repo for this?

I tested those scripts in the Bodhi Linux 6.0 environment. They haven't some hardlock to any Linux distribution but in other distributions some packages may be missed.



I think the best way to remaster the BL70 iso is:

0) Install the packages zstd and genisoimage:
$ sudo apt update

$ sudo apt install zstd genisoimage
1) Download the TGZ-package bl70_lowram_v2.tgz, place it into your home directory and unpack it:
$ tar -xzf bl70_lowram_v2.tgzYou will got bl70_lowram subdirectory that contains two shell scripts.

2) Go into the created subdirectory:
$ cd bl70_lowram_v23) Create the subdirectory for the official ISO distribution contents:
$ mkdir isofs4) Copy the official Bodhi Linux 7.0 ISO distribution contents into that subdirectory. You can mount your USB stick or DVD-disc or, if you have the file bodhi-7.0.0-64.iso in your home directory, you can mount it using loopback:

$ sudo mkdir /mnt/iso
$ sudo mount -t iso9660 -o loop,ro ~/bodhi-7.0.0-64.iso /mnt/isoThen copy the contents:
$ sudo cp -R /mnt/iso/. ./isofs
$ sudo chown -R $USER:$USER ./isofsAnd then unmount the distribution ISO:
$ sudo umount /mnt/iso
$ sudo rmdir /mnt/isoAnyway you need to copy the ISO contents into the working directory.
5) Continue from the step 3) of the post above (execute repack_initrd.sh ...)


P.S. Note for the step 4. Be sure you've copied the hidden directory .disk too. To verify that after you copy the contents, execute:
$ ls -l ./isofs/.disk
If you will see four files - all right.

Sure, I have the GitHub repo for this (now ).  

It might be better to post this in the 'Tutorials and How to's' section.
But I don't see a way to attach shell scripts to it.