pearOS Goldwing (Debian-based)
Goldwing uses the same Calamares installer as NiceC0re (with calamares-settings-debian), and installs GRUB to the disk via the stock bootloader module - Ploader is live-USB only here too, it never touches the installed system.
Update: os-prober is now included in Goldwing's package list, so on ISOs built from 2026.09 onward, Windows is detected automatically after install, same as on NiceC0re - you shouldn't need the manual step below. If you're on an older ISO, or Windows still isn't showing up, use the fix at the bottom.
Before installing:
- Turn off Fast Startup in Windows and fully shut down (not restart) - a hibernated NTFS partition can't be resized or read properly by the installer.
- Make sure Windows is installed in UEFI mode with GPT, and boot the pearOS USB in UEFI mode too.
During install (Calamares):
- Pick Install alongside on the partitioning step -
ntfs-3gis included, so Calamares can resize your existing Windows partition live. - If "alongside" isn't available, Goldwing also ships GParted - open it from the live session to shrink the Windows partition and create free space manually, then re-run the installer/pick manual partitioning. Reuse Windows' existing EFI System Partition rather than creating a new one.
Windows not showing up in the boot menu?
sudo apt update
sudo apt install os-prober
sudo update-grub
update-grub is Debian's equivalent of grub-mkconfig -o /boot/grub/grub.cfg.
If your PC still boots straight into Windows afterwards, change the boot order in your motherboard's UEFI settings so GRUB boots first.