Cannot boot into arch after installing windows on same ssd | Arch Linux Community | Page 1

mossy trellis Sep 22, 2025, 2:38 PM

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Yes, that's usually what happens when you install Windows after Linux. Windows eats your EFI

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Are you sure you are chrooting into the correct partition? Show us what you're doing

quiet steeple Sep 22, 2025, 2:39 PM

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i heard about that after researching

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Okay sure

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so i booted into arch usb

mossy trellis Sep 22, 2025, 2:39 PM

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Also, what's your filesystem?

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Is it btrfs, by any chance?

quiet steeple Sep 22, 2025, 2:39 PM

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no

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my efi partition is vfat/fat32 and my linux root ext4

mossy trellis Sep 22, 2025, 2:40 PM

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Show lsblk -f

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And how you mount it and try chrooting

quiet steeple Sep 22, 2025, 2:41 PM

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rn_image_picker_lib_temp_b9fea29c-7e2d-436e-a7bc-46d10362265f.jpg

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also id be down to vc meanwhile, would make it easier for me

mossy trellis Sep 22, 2025, 2:41 PM

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Yeah I can't unfortunately

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So which one is your Linux root?

quiet steeple Sep 22, 2025, 2:41 PM

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well forst thing, i mount nvme0n1p3 (which is indeed my main partition) to /mnt

mossy trellis Sep 22, 2025, 2:42 PM

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And ls /mnt says it's empty?

quiet steeple Sep 22, 2025, 2:42 PM

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no output

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oh wait

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my bad

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its not empty

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bin boot dev etc gabe lostfound proc run sys tmp var

mossy trellis Sep 22, 2025, 2:43 PM

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And what does arch-chroot /mnt do?

quiet steeple Sep 22, 2025, 2:44 PM

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failed to run command, /bin/bash permission denied

mossy trellis Sep 22, 2025, 2:44 PM

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Did you do something with the permissions?

quiet steeple Sep 22, 2025, 2:44 PM

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nothing at all

mossy trellis Sep 22, 2025, 2:45 PM

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Is the other ext4 partition your home partition?

quiet steeple Sep 22, 2025, 2:46 PM

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uhh im not even sure what it is

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how can i see the size of the partitions

mossy trellis Sep 22, 2025, 2:46 PM

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quiet steeple

You can see them

quiet steeple Sep 22, 2025, 2:47 PM

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ohh wait im pretty sure p2 might be like my system files

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oh holdon

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let me try smt

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oh my god

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im so sorry for my stupidness

mossy trellis Sep 22, 2025, 2:49 PM

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What?

quiet steeple Sep 22, 2025, 2:49 PM

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turns out p2 was my entire system files, i mounted it and now theres alot more folders and files, it allowed me to chroot

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p3 was just like my downloads, configs etc

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i forgot that when i installed arch i made p2 50 gigs for my system files

mossy trellis Sep 22, 2025, 2:50 PM

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You have a Linux structure like bin boot dev on your home partition?

quiet steeple Sep 22, 2025, 2:50 PM

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mossy trellis You have a Linux structure like bin boot dev on your home partition?

the structure is on p2

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p3 is everythign else

mossy trellis Sep 22, 2025, 2:51 PM

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quiet steeple the structure is on p2

What exactly is "everything else"? You mounted p3 and it showed bin boot dev etc, making me think it's your Linux root, but it turns out it isn't

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So something must've gone wrong

quiet steeple Sep 22, 2025, 2:51 PM

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hmm

quiet steeple Sep 22, 2025, 2:56 PM

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mossy trellis What exactly is "everything else"? You mounted p3 and it showed bin boot dev etc...

okay well what should i do, i just wanna install grub again and just simply boot into linux again..

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i used super grub2disk to boot into arch limux, and ot said something sbout device mapper missing from kernel

mossy trellis Sep 22, 2025, 2:57 PM

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quiet steeple okay well what should i do, i just wanna install grub again and just simply boot...

Then install grub again

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Mount your EFI partition

quiet steeple Sep 22, 2025, 2:57 PM

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grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=GRUB --recheck
grub-mkconfig -o /boot/grub/grub.cfg

mossy trellis Sep 22, 2025, 2:57 PM

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/boot/efi is deprecated, use /boot

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And mount it under /boot as well

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But yeah, that

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Also, at this point you might wanna make a separate EFI partition for Linux

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Because every so often windows might just wipe it with its own shit

quiet steeple Sep 22, 2025, 2:58 PM

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mossy trellis Also, at this point you might wanna make a separate EFI partition for Linux

def will

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its complainign "cant fijd device for /boot (is /dev mounted?)"

mossy trellis Sep 22, 2025, 3:00 PM

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The more important question is: is /boot mounted?

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Show your lsblk again

quiet steeple Sep 22, 2025, 3:00 PM

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rn_image_picker_lib_temp_3d973063-b315-4f67-a98e-7a627efe74f5.jpg

mossy trellis Sep 22, 2025, 3:00 PM

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And what are you trying to do now? Is that the output from the grub-install command?

quiet steeple Sep 22, 2025, 3:00 PM

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mossy trellis And what are you trying to do now? Is that the output from the grub-install comm...

yes

mossy trellis Sep 22, 2025, 3:00 PM

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Oh okay

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Yes, you mounted it under /boot/efi so it will be available from /boot/efi and not /boot

quiet steeple Sep 22, 2025, 3:01 PM

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ah

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same error

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ls boot/efi shows grub in there tho?

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rn_image_picker_lib_temp_34012fb4-ecfd-4d68-b6a9-03a563963d03.jpg

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should i try

sudo systemctl reboot --boot-loader-entry=grub

mossy trellis Sep 22, 2025, 3:07 PM

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Oh

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No

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The first error message was about /dev not being mounted was right

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But i didn't know that you did chroot instead of arch-chroot

quiet steeple Sep 22, 2025, 3:08 PM

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oh

mossy trellis Sep 22, 2025, 3:08 PM

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Which mounts /dev for you

quiet steeple Sep 22, 2025, 3:08 PM

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ohhh

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ok one minute

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okay install finished

quiet steeple Sep 22, 2025, 3:12 PM

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mossy trellis Which mounts /dev for you

no errors

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what now

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grubs there now but it only shows uefi firmware settings

quiet steeple Sep 22, 2025, 3:35 PM

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mossy trellis Which mounts /dev for you

its fixed, thanks for ur help<33

#Cannot boot into arch after installing windows on same ssd