A Counter‑Strike inspired GRUB theme that turns your boot menu into a fullscreen side picker (Linux vs Windows), inspired by the classic CT vs T selection screen.

⚠️ Important: This theme intentionally uses a GRUB layout trick where each menu entry is rendered as a fullscreen image. This is safe, but it requires specific GRUB settings to behave correctly.

• Fullscreen background per menu entry
• Linux / Windows visual selection
• Keyboard‑only navigation (↑ ↓ Enter)
• No animations, no scripts at boot time
• Pure GRUB theme (cosmetic only)

Tested / intended for:

• Ubuntu & Ubuntu‑based

  • Ubuntu
  • Mint
  • Debian

• Arch

• Fedora

Other distros may work, but are not officially covered.

Because of how this theme works:

• Each visible GRUB menu entry must have a fullscreen image

• Extra entries (Recovery, Advanced options, UEFI Firmware) will break navigation

• This theme works best with exactly two entries:

  • Linux
  • Windows

👉 This is not a bug — it’s a known GRUB limitation.

sudo cp /etc/default/grub /etc/default/grub.backup

Edit GRUB defaults:

sudo nano /etc/default/grub

Add or ensure the following(the installation script does this but check again):

GRUB_TIMEOUT_STYLE=menu
GRUB_DISABLE_SUBMENU=y
GRUB_DISABLE_OS_PROBER=false

Add this as well:

GRUB_DEFAULT="0>0"

This forces normal Linux boot instead of recovery.

To keep navigation clean:

sudo chmod -x /etc/grub.d/30_uefi-firmware

You can restore it later with:

sudo chmod +x /etc/grub.d/30_uefi-firmware

Clone the repository:

git clone https://github.com/ali-hv/csgrub.git
cd csgrub

Run the installer:

sudo ./install.sh

Reboot:

reboot

After installation:

/boot/grub/themes/csgrub/
├── theme.txt
├── font.pf2
└── icons/
    ├── linux.png
    └── windows.png

sudo nano /etc/default/grub
# Comment or remove GRUB_THEME
sudo update-grub

if you couldn't enter your os:

1. Boot a live USB
2. Mount your system and chroot
3. Run:

update-grub

GRUB themes are purely cosmetic — no risk of data loss.

sudo nano /etc/default/grub
# Remove GRUB_THEME line
sudo update-grub
sudo rm -rf /boot/grub/themes/csgrub

• This theme is index‑based, not OS‑based
• Menu order matters
• Designed for 1920×1080 (works on others, but not guaranteed)
• Not compatible with animated or complex GRUB layouts

Inspired by classic GRUB fullscreen picker themes and the Counter‑Strike universe.

Enjoy — and boot responsibly 😄