Arch Linux

Tastelessor

Member

Registered: 2022-04-30

Posts: 6

[SOLVED]I can't find my windows boot after installing arch linux

I did install grub and os-prober, but it can't find windows boot manager after installing the arch linux.
I followed this install guide from here:https://wiki.archlinux.org/title/instal … _the_disks
it says that 'If the disk from which you want to boot already has an EFI system partition, do not create another one, but use the existing partition instead.', so I used the existing one.
Now I don't know where to find my windows... I can't even find the windows in the BIOS...

Here are some outputs that maybe useful:

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fdisk -l:

Disk /dev/nvme0n1: 953.87 GiB, 1024209543168 bytes, 2000409264 sectors
Disk model: CUBEX CP2000 1024GB                     
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 2A5D4C63-DC8E-438D-A883-BEAF3CC8B6BB

Device              Start        End   Sectors   Size Type
/dev/nvme0n1p1       2048     534527    532480   260M EFI System
/dev/nvme0n1p2     534528     567295     32768    16M Microsoft reserved
/dev/nvme0n1p3     567296  419997695 419430400   200G Microsoft basic data
/dev/nvme0n1p4  419997696  998166527 578168832 275.7G Microsoft basic data
/dev/nvme0n1p5  998166528 1000214527   2048000  1000M Windows recovery environment
/dev/nvme0n1p6 1000214528 1371410431 371195904   177G Microsoft basic data
/dev/nvme0n1p7 1371410432 1983778815 612368384   292G Linux root (x86-64)
/dev/nvme0n1p8 1983778816 2000408575  16629760   7.9G Linux swap
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lsblk:

NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
nvme0n1     259:0    0 953.9G  0 disk 
├─nvme0n1p1 259:1    0   260M  0 part /boot
├─nvme0n1p2 259:2    0    16M  0 part 
├─nvme0n1p3 259:3    0   200G  0 part 
├─nvme0n1p4 259:4    0 275.7G  0 part 
├─nvme0n1p5 259:5    0  1000M  0 part 
├─nvme0n1p6 259:6    0   177G  0 part 
├─nvme0n1p7 259:7    0   292G  0 part /
└─nvme0n1p8 259:8    0   7.9G  0 part [SWAP]
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grub-mkconfig -o /boot/grub/grub.cfg 
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-linux
Found initrd image: /boot/amd-ucode.img /boot/initramfs-linux.img
Found fallback initrd image(s) in /boot:  amd-ucode.img initramfs-linux-fallback.img
Warning: os-prober will be executed to detect other bootable partitions.
Its output will be used to detect bootable binaries on them and create new boot entries.
Adding boot menu entry for UEFI Firmware Settings ...
done
---------------------------------------------------------------------------------------------------

Last edited by Tastelessor (2022-05-04 10:35:05)

Slithery

Administrator

From: Norfolk, UK

Registered: 2013-12-01

Posts: 5,776

Re: [SOLVED]I can't find my windows boot after installing arch linux

Did you format the EFI partition? If so then you deleted the Windows boot files.

Warning: Only format the EFI system partition if you created it during the partitioning step. If there already was an EFI system partition on disk beforehand, reformatting it can destroy the boot loaders of other installed operating systems.

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No, it didn't "fix" anything. It just shifted the brokeness one space to the right. - jasonwryan
Closing -- for deletion; Banning -- for muppetry. - jasonwryan

aur - dotfiles

Tastelessor

Member

Registered: 2022-04-30

Posts: 6

Re: [SOLVED]I can't find my windows boot after installing arch linux

Oh no...

I did run the command:

mkfs.fat -F 32 /dev/efi_system_partition

Is there any remedy for it? Or I have to reinstall windows?

Slithery

Administrator

From: Norfolk, UK

Registered: 2013-12-01

Posts: 5,776

Re: [SOLVED]I can't find my windows boot after installing arch linux

You should be able to fix it by booting a Windows install USB and using the repair options.

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No, it didn't "fix" anything. It just shifted the brokeness one space to the right. - jasonwryan
Closing -- for deletion; Banning -- for muppetry. - jasonwryan

aur - dotfiles

Tastelessor

Member

Registered: 2022-04-30

Posts: 6

Re: [SOLVED]I can't find my windows boot after installing arch linux

Thank you!

This is my first time posting for help in a forum and I'm surprised by how efficient it is.

Thank you for your fast reply and patience, I'll try it now and mark the post as solved once I succeed.

Many thanks:)

Tastelessor

Member

Registered: 2022-04-30

Posts: 6

Re: [SOLVED]I can't find my windows boot after installing arch linux

I solved the problem by repairing the windows boot manager. Here are things that I did:

Insert the Windows 10 media and restart your computer to boot from the media.
Go to Command Prompt (click Troubleshoot > Command Prompt)
Type: bcdboot C:\windows
Press Enter.
Remove the DVD or USB.
Type: exit.
Press Enter.
Restart

And then the os-prober found my windows manager.

Many thanks for Slithery:D