Unable to dual boot Windows after install

Just installed Manjaro 21.0, and am unable to boot into Windows. Normally, Windows would be detected and listed as a boot option, but that doesn’t even happen now.

What’s worse is, apparently fast boot was turned on, and now trying to boot-repair gives me the error that the Windows partition is still mounted.

Is there any way to fix this boot issue without having to get a Windows recovery disk from my OEM and reinstall everything?

  • If you need dual-boot you can reactivate os-prober the easiest with the following command combination in a terminal:

echo GRUB_DISABLE_OS_PROBER=false|sudo tee -a /etc/default/grub && sudo update-grub

Really only seems to find Linux-based options.

Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.10-x86_64
Found initrd image: /boot/amd-ucode.img /boot/initramfs-5.10-x86_64.img
Found initrd fallback image: /boot/initramfs-5.10-x86_64-fallback.img
Warning: os-prober will be executed to detect other bootable partitions.
It's output will be used to detect bootable binaries on them and create new boot entries.
Adding boot menu entry for UEFI Firmware Settings ...
Found memtest86+ image: /boot/memtest86+/memtest.bin

can you provide

inxi -Mza
sudo parted -l


  Type: Laptop System: ASUSTeK product: TUF Gaming FX505DY_FX505DY 
  v: 1.0 serial: <filter> 
  Mobo: ASUSTeK model: FX505DY v: 1.0 serial: <filter> 
  UEFI: American Megatrends v: FX505DY.315 date: 03/09/2020


Model: ATA ST1000LX015-1U71 (scsi)
Disk /dev/sda: 1000GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags: 

Warning: failed to translate partition name
                                                                       Number  Start   End     Size    File system     Name                          Flags
 1      1049kB  274MB   273MB   fat32           EFI system partition          boot, esp
 2      274MB   290MB   16.8MB                  Microsoft reserved partition  msftres
 3      290MB   500GB   500GB   ntfs            Basic data partition          msftdata
 5      500GB   508GB   8000MB  linux-swap(v1)                                swap
 6      508GB   999GB   492GB   ext4
 4      999GB   1000GB  891MB   ntfs                                          hidden, diag