Manjaro install alongside Windows 10 => Directly boot to W10

Dear Friends!

I installed Manjaro alongside Windows 10 but system directly boots to W10 if I ever boot into W10.
To solve it, I followed this advice: GRUB not showing up on UEFI pc

sudo grub-install
sudo cp /boot/grub/x86_64-efi/core.efi /boot/efi/EFI/boot/bootx64.efi
sudo efibootmgr -c -d /dev/sda -p 1 -L "manjaro" -l "\EFI\Manjaro\grubx64.efi"
sudo update-grub

After restart everything is all right. Grub shows up and I can select to boot to Manjaro. Then shut down and then boot with Grub again any time.
BUT if once I select to boot W10 it boots and never shows Grub again! My efibootmgr does not list Manjaro again!
The only way to boot Manjaro again is by booting from live USB -> Detect EFI bootloaders -> select Manjaro.
20200624_105402
At next step GRUB 2.04 shows up and OSes can be selected. Boots to any OS I select.
The hardware is a SONY VAIO notebook with nVidia GPU.
Please help me to solve the boot issues. Thanks in advance!
EDIT: Both Win10 and Manjaro are installed in UEFI mode.

can you boot on iso USB manjaro
open a terminal and report

sudo efibootmgr -v

BootCurrent: 0000
Timeout: 2 seconds
BootOrder: 2001,2002,2003
Boot0000* EFI USB Device (ADATA USB Flash Drive) PciRoot(0x0)/Pci(0x1d,0x0)/USB(0,0)/USB(2,0)/HD(2,MBR,0x24483c33,0x1ddd800,0x10000)RC
Boot2001* EFI USB Device RC
Boot2002* EFI DVD/CDROM RC
Boot2003* EFI Network RC

can you add

sudo parted -l

Model: ATA Samsung SSD 850 (scsi)
Disk /dev/sda: 250GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number Start End Size File system Name Flags
1 1049kB 106MB 105MB fat32 EFI system partition boot, esp
2 106MB 123MB 16.8MB Microsoft reserved partition msftres
3 123MB 103GB 103GB ntfs Basic data partition msftdata
5 103GB 151GB 47.8GB ext4
6 151GB 153GB 2097MB linux-swap(v1) swap
4 250GB 250GB 530MB ntfs hidden, diag

Model: ADATA USB Flash Drive (scsi)
Disk /dev/sdb: 16.1GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number Start End Size Type File system Flags
1 1049kB 16.0GB 16.0GB primary boot
2 16.0GB 16.1GB 33.6MB primary fat16 esp

Compare your installation procedure with the best available tutorial for dual boot using UEFI firmware:

Thanks guys, this 3 lines (seem) solved the issue in Windows:

    Run CMD as Administrator
    bcdedit /set {bootmgr} path \EFI\manjaro\grubx64.efi
    Reboot
1 Like

Hi,
on my machine I went into uefi-Bios and selected the manjaro-installation as first boot-device...
Grub starts Windoofs-Bootloader if selected; no complains at Windoofs Updates until now.
This Windoofs-Tool "bcdedit" I use too.

Partition Table: msdos

For uefi-install GPT is required!!!
How to convert I forgot, maybe not possible
Well, and the manjaro-install has to be booted in uefi-mode too. If mix ---> then no fun.

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