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https://github.com/thias/glim

GRUB Live ISO Multiboot
https://github.com/thias/glim

boot centos fedora glim grub grub2 iso-image live rhel ubuntu usb

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GRUB Live ISO Multiboot

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README 

        
GRUB2 Live ISO Multiboot

========================



https://github.com/thias/glim | http://glee.thias.es/GLIM



Overview

--------



GLIM is a set of grub configuration files to turn a simple VFAT formatted USB

memory stick with many GNU/Linux distribution ISO images into a neat device

from which many different Live environments can be used.



Advantages over extracting files or using special Live USB creation tools :



 * A single USB memory can hold all Live environments (the limit is its size)

 * ISO images stay available to burn real CDs or DVDs

 * ISO images are quick to manipulate (vs. hundreds+ files)



Disadvantages :



 * There is no persistence overlay for distributions which normally support it

 * Setting up isn't as easy as a simple cat from the ISO image to a block device



My experience has been that the safest filesystem to use is FAT32

(surprisingly!), though it will mean that ISO images greater than 4GB won't be

supported. Other filesystems supported by GRUB2 also work, such as ext3/ext4,

NTFS and exFAT, but the boot of the distributions must also support it, which

isn't the case for many with NTFS (Ubuntu does, Fedora doesn't) and exFAT

(Ubuntu doesn't, Fedora does). So FAT32 stays the safe bet.



Screenshots

-----------



![Main Menu](https://github.com/thias/glim/raw/master/screenshots/GLIM-3.0-shot1.png)

![Ubuntu Submenu](https://github.com/thias/glim/raw/master/screenshots/GLIM-3.0-shot2.png)



Installation

------------



Once you have your USB memory with a single partition formatted as FAT32 with

the filesystem label 'GLIM', mount it, clone this git repository and just run

(as a normal user) :



    ./glim.sh



Once finished, you may change the filesystem label to anything you like.



The supported `boot/iso/` sub-directories (in alphabetical order) are :



[//]: # (distro-list-start)



* [`almalinux`](https://almalinux.org/) - _Live Media only_

* [`antix`](https://antixlinux.com/)

* [`arch`](https://archlinux.org/)

* [`artix`](https://artixlinux.org/)

* [`bodhi`](https://www.bodhilinux.com/)

* [`calculate`](https://wiki.calculate-linux.org/desktop)

* ~~[`centos`](https://www.centos.org/)~~ - _Live was discontinued_

* [`clonezilla`](https://clonezilla.org/)

* [`debian`](https://www.debian.org/CD/live/) - _live & `mini.iso`_

* [`elementary`](https://elementary.io/)

* [`fedora`](https://fedoraproject.org/)

* [`finnix`](https://www.finnix.org/)

* [`gentoo`](https://www.gentoo.org/)

* [`gparted`](https://gparted.org/)

* [`grml`](https://grml.org/)

* [`ipxe`](https://ipxe.org/) - _.iso or .efi_

* [`kali`](https://www.kali.org/)

* [`kubuntu`](https://kubuntu.org/)

* [`libreelec`](https://libreelec.tv/)

* [`linuxmint`](https://linuxmint.com/)

* [`lubuntu`](https://lubuntu.me/)

* [`manjaro`](https://manjaro.org/)

* [`memtest`](https://memtest.org/) - _Only .bin/.efi, not .iso_

* [`mxlinux`](https://mxlinux.org/)

* [`netrunner`](https://www.netrunner.com/)

* [`openbsd`](https://www.openbsd.org/)

* [`opensuse`](https://www.opensuse.org/) - _Live from Alternative Downloads only_

* [`peppermint`](https://peppermintos.com/)

* [`popos`](https://pop.system76.com/)

* [`porteus`](http://www.porteus.org/)

* [`rhel`](https://www.redhat.com/rhel) - _Installation only_

* [`rockylinux`](https://rockylinux.org/)

* [`slitaz`](https://slitaz.org/)

* [`supergrub2disk`](https://www.supergrubdisk.org/)

* [`systemrescue`](https://www.system-rescue.org/)

* [`tails`](https://tails.net/)

* [`ubuntubudgie`](https://ubuntubudgie.org/)

* [`ubuntu`](https://ubuntu.com/)

* [`void`](https://voidlinux.org/)

* [`xubuntu`](https://xubuntu.org/)

* [`zorinos`](https://zorin.com/os/)



[//]: # (distro-list-end)



Any unpopulated directory will have the matching boot menu entry automatically

disabled, so to skip any distribution, just don't copy any files into it.



Download the right ISO image(s) to the matching directory. If you require

boot parameter tweaks, edit the appropriate `boot/grub2/inc-*.cfg` file.



Items order in the menu

------------



Menu items for a distro are ordered by modification time of the iso files

starting from the most recent ones. If some iso files have the same mtime, their

menu items are ordered alphabetically.



Here is a generic idea how to keep it nicely ordered when you have multiple

releases of some distro:



- touch your **release** iso files with the release date

- touch your **point release** iso files with the original release date plus a

  day per point. This is a way to ensure point releases never pop above the next

  release like Debian 10.13.0 (released 10 Sep 2022) would still be below Debian

  11.0.0 (released 14 August 2021)

- in case there are multiple flavours of some iso but the version is the same,

  touch all of them with the same date for the whole group to be ordered

  alphabetically



Sample ordered menu:



|                                    | iso mtime               |

|------------------------------------|-------------------------|

| Debian Live 12.0.0 amd64 standard  | 10 June 2023            |

| Debian Live 11.7.0 amd64 gnome     | 14 August 2021 + 7 days |

| Debian Live 11.7.0 amd64 kde       | 14 August 2021 + 7 days |

| Debian Live 11.7.0 amd64 standard  | 14 August 2021 + 7 days |

| Debian Live 11.0.0 amd64 gnome     | 14 August 2021          |

| Debian Live 11.0.0 amd64 kde       | 14 August 2021          |

| Debian Live 11.0.0 amd64 standard  | 14 August 2021          |

| Debian Live 10.13.0 amd64 standard | 6 July 2019 + 13 days   |

| Debian Live 9.13.0 amd64 standard  | 17 June 2017 + 13 days  |



Special Cases

-------------



### iPXE



The `.iso` files don't work when booting using EFI, you simply need to use

`.efi` files instead.



### LibreELEC



LibreELEC isn't provided as ISO images, nor is it able to find the `KERNEL` and

`SYSTEM` files it needs anywhere else than at the root of a filesystem.

But it's useful to enable booting the installer by just copying both

files to the root of the USB memory stick.

Live booting is also supported, and the first launch will create a 512MB file

as /STORAGE.



### Memtest86+



The `.iso` file doesn't work. Use either the `.bin` or the `.efi` depending on

the boot mode used.



### Ubuntu



Recent Ubuntu desktop iso images bundle multiple versions on the Nvidia

driver. With that, the images are over 4GB, the FAT32 max file size. For example

`ubuntu-20.04.6-desktop-amd64.iso` is 4.1GB, `ubuntu-22.04.2-desktop-amd64.iso`

is 4.6GB. The driver is not required in a live system, it can be removed to make

an image fit into 4GB. For example, with 22.04.2 image in the current dir:



```

mkdir slim

iso=ubuntu-22.04.2-desktop-amd64.iso



xorriso -indev "$iso" -outdev slim/"$iso" \

    -boot_image any replay -rm_r /pool/restricted/{l,n} --

```



Now you can copy `slim/ubuntu-22.04.2-desktop-amd64.iso` to your FAT32 formatted

GLIM USB stick.



Some Ubuntu flavours also bundle the Nvidia driver (like Kubuntu), some don't

(like Xubuntu). The same trick can be used with the former.



Testing

-------



With KVM it should "just work". The `/dev/sdx` device should be configured as

an IDE or SATA disk (for some reason, as USB disk didn't work for me on Fedora

17), that way you can easily and quickly test changes.

Make sure you unmount the disk from the host OS before you start the KVM

virtual machine that uses it.

For UEFI testing, you'll need to use one of the `/usr/share/edk2/ovmf/*.fd`

firmwares.



Troubleshooting

---------------



If you have any problem to boot, for instance stuck at the GRUB prompt before

the menu, try re-installing.

If you have other exotic GRUB errors, such as garbage text read instead of the

configuration directives, try re-formatting your USB memory from scratch.

I've seen weird things happen...



Contributing

------------



If you find GLIM useful but the configuration of the OS you require is missing

or simply outdated, please feel free to contribute! What you will need is to

create a GitHub pull request which includes :

 * All changes properly and fully tested.

 * New entries added similarly to the existing ones :

   * In alphabetical order.

   * With all possible variants supported (i.e. not just the one spin you want).

 * An original icon of high quality, and a shrunk 24x24 png version. Using

   `convert -size 24x24 -background 'rgba(0,0,0,0)' original.svg small.png`

   may work.

 * An updated supported directories list in this README file.



---

Copyleft 2012-2023 Matthias Saou http://matthias.saou.eu/



All configuration files included are public domain. Do what you want with them.

The invader logo was made by me, so unless the exact shape is covered by

copyright somewhere, do what you want with it.

The background is "Wallpaper grey" © 2008 payalnic (DeviantArt)

The `ascii.pf2` font comes from GRUB, which is GPLv3+ licensed. For more

details as well as the source code, see http://www.gnu.org/software/grub/