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โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ  โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ  โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ  โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ  โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ  โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ  โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ
โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ  โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ  โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ  โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ  โ–ˆโ–ˆโ–ˆ   โ–ˆโ–€   โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ  โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ
โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ  โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ โ–„โ–ˆโ–ˆโ–ˆโ–„โ–„โ–„โ–ˆโ–ˆโ–ˆ โ–„โ–ˆโ–ˆโ–ˆโ–„โ–„โ–„โ–ˆโ–ˆโ–€  โ–ˆโ–ˆโ–ˆ       โ–„โ–ˆโ–ˆโ–ˆโ–„โ–„โ–„โ–ˆโ–ˆโ–ˆโ–„ โ–ˆโ–ˆโ–ˆโ–„โ–„โ–„โ–ˆโ–ˆโ–ˆ
โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ  โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ โ–€โ–ˆโ–ˆโ–ˆโ–€โ–€โ–€โ–ˆโ–ˆโ–ˆ โ–€โ–ˆโ–ˆโ–ˆโ–€โ–€โ–€โ–€    โ–ˆโ–ˆโ–ˆ      โ–€โ–€โ–ˆโ–ˆโ–ˆโ–€โ–€โ–€โ–ˆโ–ˆโ–ˆ  โ–€โ–€โ–€โ–€โ–€โ–€โ–ˆโ–ˆโ–ˆ
โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ  โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ  โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆ  โ–ˆโ–ˆโ–ˆ   โ–ˆโ–„   โ–ˆโ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ  โ–„โ–ˆโ–ˆ   โ–ˆโ–ˆโ–ˆ
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                                       โ–ˆโ–ˆโ–ˆ   โ–ˆโ–€

Beautiful, Fun & Opinionated Linux by DHH

The malleable OS for the age of agents. Where you can vibe your way through every alteration, tweak, and desire. Be the Omarch and command your agent!

System Featured September 1, 2026 โ€ข 12 min

Dual Boot Omarchy + Windows: Manual Partition Without Wiping

Install Omarchy alongside Windows 11 without wiping your disk. Manual Arch + omarchy install, GRUB vs Limine, BitLocker, EFI fixes.

M
Mikael Lund
omarchy โ€ข dual boot โ€ข windows
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Omarchyโ€™s ISO is opinionated: pick a disk โ†’ wipe โ†’ encrypt โ†’ install. No โ€œinstall alongside Windowsโ€ button. If you need dual-boot, you use the manual path: install Arch, then overlay Omarchy. Tested on 2026-08.

Why manual?

  • Omarchy ISO + Limine expects one encrypted Btrfs drive. Windows updater often breaks Limine entries.
  • Manual Arch + GRUB gives coexisting EFI entries, separate drives or partitions, and full control over LUKS vs BitLocker.

Prerequisites

  • 64-bit UEFI, Secure Boot off, TPM off, BitLocker suspended in Windows
  • 60GB+ free space (Btrfs) or second drive
  • Arch Linux ISO on USB (not Omarchy ISO) + Ethernet or iwctl wifi
  • Backup. Really.

Shrink Windows from within Windows: Disk Management โ†’ Shrink Volume. Leave as unallocated. Donโ€™t format.

Step 1: Boot Arch ISO and archinstall

archinstall
# Mirrors: your country
# Disk: Partitions โ†’ Manual / Existing partitions
#   - Use free space โ†’ btrfs (mount /), keep existing EFI (mount /boot), 8GB swap optional
# Filesystem: btrfs + compression=zstd
# Bootloader: GRUB (not Limine for dual-boot reliability)
# Encryption: LUKS only on Omarchy partition if you want it (note Bluetooth won't unlock)
# Profile: Minimal โ†’ add base-devel, networkmanager, btrfs-progs

Set GDK_SCALE later; for now finish install and reboot into Arch (still plain Arch).

Step 2: Overlay Omarchy on Arch

# From fresh Arch
sudo pacman -Syu git curl
curl -fsSL https://omarchy.org/install | bash
# Or: git clone https://github.com/basecamp/omarchy && cd omarchy && ./install.sh

This pulls Hyprland, Quickshell, themes, omarchy CLI, Btop, Alacritty, Starship. It respects existing /boot and wonโ€™t reformat your Windows partition.

If XWAYLAND_NO_GLAMOR needed on VMware, add:

echo 'export XWAYLAND_NO_GLAMOR=1' >> ~/.config/uwsm/env

Step 3: Replace Limine with GRUB (if installer left Limine)

Omarchy defaults to Limine. For dual-boot keep GRUB:

sudo pacman -S grub efibootmgr os-prober
sudo grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id=GRUB
sudo grub-mkconfig -o /boot/grub/grub.cfg
# Enable os-prober
echo 'GRUB_DISABLE_OS_PROBER=false' | sudo tee -a /etc/default/grub
sudo grub-mkconfig -o /boot/grub/grub.cfg

os-prober should detect Windows Boot Manager. If not, ensure /boot/EFI/Microsoft exists.

Step 4: Restore snapshots without Limine

Manual GRUB loses Limineโ€™s snapshot boot menu. Add:

# Stub Limine hooks to no-ops if you keep GRUB
sudo tee /usr/local/bin/limine-update <<'EOF'
#!/bin/sh
exit 0
EOF
sudo chmod +x /usr/local/bin/limine-update
# Keep Snapper snapshots: sudo snapper create --description "clean manual install"

Rollback now: sudo snapper list โ†’ sudo snapper undochange 12..13 or btrfs send/restore.

Troubleshooting

EFI variables not supported / legacy mode โ†’ Enable UEFI in BIOS, disable Legacy/CSM, disable Secure Boot, re-run grub-install.

Windows entry missing โ†’ Mount EFI, rerun os-prober, check efibootmgr -v shows both.

LUKS prompt ignores Bluetooth keyboard โ†’ Use wired or 2.4GHz dongle at unlock.

After Windows Update GRUB gone โ†’ Boot Arch USB โ†’ arch-chroot /mnt โ†’ grub-install again. Consider separate drives to avoid.

Next: Gaming on Omarchy or System Snapshots.

#omarchy#dual boot#windows#grub#partition ~483 words
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