# My grub2 config

## Enable OS prober

If os-prober is disabled, add this line in `/etc/default/grub`:

```Bash
GRUB_DISABLE_OS_PROBER=false
```

## Add `poweroff` and `reboot` options

To add `poweroff` and `reboot` options to your grub, add those lines in `/etc/grub.d/40_custom`:

```Bash
menuentry 'Power off' {
	halt
}
menuentry 'Reboot' {
	reboot
}
```

## Install a theme (link to the [github repo](https://github.com/vinceliuice/grub2-themes))

![banner](https://raw.githubusercontent.com/vinceliuice/grub2-themes/refs/heads/master/banner.png)

### Installation:
Usage:  `sudo ./install.sh [OPTIONS...]`
```
  -t, --theme                 theme variant(s)          [tela|vimix|stylish|whitesur]       (default is tela)
  -i, --icon                  icon variant(s)           [color|white|whitesur]              (default is color)
  -s, --screen                screen display variant(s) [1080p|2k|4k|ultrawide|ultrawide2k] (default is 1080p)
  -c, --custom-resolution     set custom resolution     (e.g., 1600x900)                    (disabled in default)
  -r, --remove                remove theme              [tela|vimix|stylish|whitesur]       (must add theme name option, default is tela)

  -b, --boot                  install theme into '/boot/grub' or '/boot/grub2'
  -g, --generate              do not install but generate theme into chosen directory       (must add your directory)

  -h, --help                  show this help
```
*If no options are used, a user interface *`dialog`* will show up instead*

#### Examples:
 - Install Tela theme on 2k display device:
```sh
sudo ./install.sh -t tela -s 2k
```
 - Install Tela theme with custom resolution:
```sh
sudo ./install.sh -t tela -c 1600x900
```
 - Install Tela theme into /boot/grub/themes:
```sh
sudo ./install.sh -b -t tela
```
 - Uninstall Tela theme:
```sh
sudo ./install.sh -r -t tela
```

### Issues / tweaks:
#### Correcting display resolution:
 - On the grub screen, press `c` to enter the command line
 - Enter `vbeinfo` or `videoinfo` to check available resolutions
 - Open `/etc/default/grub`, and edit `GRUB_GFXMODE=[height]x[width]x32` to match your resolution
 - Finally, run `grub-mkconfig -o /boot/grub/grub.cfg` to update your grub config

#### Setting a custom background:
 - Make sure you have `imagemagick` installed, or at least something that provides `convert`
 - Find the resolution of your display, and make sure your background matches the resolution
   - 1920x1080 >> 1080p
   - 2560x1080 >> ultrawide
   - 2560x1440 >> 2k
   - 3440x1440 >> ultrawide2k
   - 3840x2160 >> 4k
 - Place your custom background inside the root of the project, and name it `background.jpg`
 - Run the installer like normal, but with -s `[YOUR_RESOLUTION]` and -t `[THEME]` and -i `[ICON]`
   - Make sure to replace `[YOUR_RESOLUTION]` with your resolution and `[THEME]` with the theme
 - Alternatively, use the `-c` option to set a custom resolution

### Contributing:
 - If you made changes to icons, or added a new one:
   - Delete the existing icon, if there is one
   - Run `cd assets; ./render-all.sh`
 - Create a pull request from your branch or fork
 - If any issues occur, report then to the [issue](https://github.com/vinceliuice/grub2-themes/issues) page

### Preview:
![preview](https://raw.githubusercontent.com/vinceliuice/grub2-themes/refs/heads/master/preview.png)

### Documents

[Grub2 theme reference](https://wiki.rosalab.ru/en/index.php/Grub2_theme_/_reference)  

[Grub2 theme tutorial](https://wiki.rosalab.ru/en/index.php/Grub2_theme_tutorial)

## Customize the titles, order and entries shown with grub-customizer

To install `grub-customizer`:
```Bash
sudo add-apt-repository ppa:danielrichter2007/grub-customizer
sudo apt-get update
sudo apt-get install grub-customizer
```

Preview:
[![](https://docs.adebarbarin.com/uploads/images/gallery/2024-09/scaled-1680-/image-1726768496391.png)](https://docs.adebarbarin.com/uploads/images/gallery/2024-09/image-1726768496391.png)