Help, looks like I override windows boot files in dual boot.


I just replace another distro, that was in dual boot with Win10 using GRUB (that was installed after a Repair-Boot run) with Manjaro. The instalation was pretty straighfoward: I deleted and then formated the previous / dir and the /boot partition was turned into /boot/uefi.
When I reboot to check if Win10 was still available I encounter with GRUB rescue mode, I thought it could happen because Manjaro was using a different boot loader. So I head to UEFI Boot and find UEFI: Manjaro and a "UEFI: OS" when I pick the latest it leads to Manjaro.

efibootmgr -v shows this:

BootCurrent: 0004`

Timeout: 1 seconds`

BootOrder: 0000,0002,0004,0003`

Boot0000* SATA5 : Samsung SSD 850 EVO 25 BBS(17,,0x0)`

Boot0002* Manjaro HD(3,MBR,0x66ccf841,0x13ef2000,0x100000)/File(\EFI\Manjaro\grubx64.efi)`

Boot0003* UEFI: Built-in EFI Shell VenMedia(5023b95c-db26-429b-a648-bd47664c8012)AMBO`

Boot0004* UEFI OS HD(3,MBR,0x66ccf841,0x13ef2000,0x100000)/File(\EFI\BOOT\BOOTX64.EFI)`

Is there a way to fix the Win10 boot without a live media?

Also, I think theres some GRUB crumbs spread all over the drive, is there a way to clean that up?

Thanks in advance

First try running

sudo update-grub

If that doesn't pick windows up you'll have to reinstall Windows bootloader (this shouldn't be necessary, under normal circumstances installing manjaro won't delete the windows bootloader)

Don't think so, you'll need a windows 10 installation media, a thumb drive will do.

First reinstall Windows bootloader. Then fix grub.


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