Anyone knows how to fix a nuked Windows boot partition? (lemmygrad.ml)

submitted 2 days ago by ksynwa@lemmygrad.ml to c/technology@hexbear.net

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cross-posted from: https://lemmygrad.ml/post/6734778

My laptop is (maybe was) Linux and Windows 10 dual booted. I was reinstalling the Linux OS and in the process I accidentally formatted the Windows 10 boot partition. At least I think it is the boot partition because I don't really know how Windows works (or doesn't work amirite).

This is the lsblk output:
$ lsblk -f
NAME        FSTYPE     FSVER LABEL [...] MOUNTPOINTS
nvme1n1     zfs_member 5000  zroot [...]
├─nvme1n1p1 vfat       FAT32       [...] /boot/efi
├─nvme1n1p2 swap       1           [...] [SWAP]
└─nvme1n1p3 zfs_member 5000  zroot [...]
nvme0n1
├─nvme0n1p1
└─nvme0n1p2 ntfs
The nvme0n1p1 is the one related to booting. I accidentally formatted it.

I have a Windows 10 USB prepared. I tried looking online and I never found a question asking exactly for this. The ones I found that were similar enough suggested different commands.

Anyone has experience with this?

Thanks in advance.

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[-] elidoz@lemmy.ml 2 points 2 days ago* (last edited 2 days ago)

almost as soon as I installed linux I uninstalled windows, so I don't know much but wouldn't it work to just install grub and have it do its thing with os-prober? I have a usb with a system rescue iso so that it can find my linux os, then I boot to it, I get into tty and I reinstall grub

I also accidentally deleted my boot partition once, and deliberately other times because I like poking around in the os, I hope this works for you

[-] ksynwa@lemmygrad.ml 1 points 2 days ago

Os prober isn't detecting windows. I suspect it's because the windows boot partition is gone but I'm not sure how it detects windows exactly.

[-] elidoz@lemmy.ml 1 points 2 days ago* (last edited 1 day ago)

in some distros os-prober may be disabled by default (because of security reasons iirc, I don't know why it would be unsecure) or you may need to mount the windows partition begore running os-prober

for example in arch os-prober only checks mounted partitions

you can try mounting your windows partition to /mnt or somewhere else where you have an empty folder before running os-prober

this post was submitted on 14 Jan 2025

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