I'll do you one better. Do you know what a windows update killed on my multi boot system? It killed the windows bootloader. I'm working on a permanent solution to fixing this bootloader fudgery.
this post was submitted on 04 Jun 2025
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Pre-UEFI they were fighting over the boot sector, sure, but now that everything is more well defined, and every OS can read the FAT32 ESP? Never seen it...
At worst the UEFI boot entry is replaced. There are some really shitty UEFI implementations out there which only want to load \efi\microsoft\boot\bootx64.efi or \efi\boot\bootx64.efi, or keep resetting you back to those.
Assuming you were dumped into Windows suddenly, you can check if you have the necessary boot entries still with bcdedit and its firmware option
bcdedit /enum firmware
If you just have a broken order you can fix it with
bcdedit /set {fwbootmgr} displayorder {<GUID>} /addfirst
If you actually need a new entry for Linux it's a bit more annyoing, you need to copy one of the windows entries, and then modify it.
bcdedit /copy {<GUID1>} /d "Fedora"
bcdedit /set {<GUID2>} path \EFI\FEDORA\SHIM.EFI
bcdedit /set {fwbootmgr} displayorder {<GUID2>} /addfirst
Where GUID1 is a suitable entry from windows, and GUID2 is the one you get back from the copy command as the identifier of the new entry. Of course you will have to adjust the description and the path according to your distro and where it puts its shim, or the grub efi, depending on which you'd like to start.
Edit: Using DiskGenius might be a little more comfortable.
Variations of this meme get posted every week, but I've never experienced it, despite having had tens of grub updates murder-suicide the Windows boot loader and grub itself across five or six different machines. Thankfully, it's pretty easy to rebuild a Windows boot partition, but the frequency that I'm hit with this problem is one of the major reasons I avoid using Linux. Eventually I'm going to have to switch, but that's driven mainly by Windows getting worse rather than any of the pain points I've had when trying to switch full time in the past having been fixed.
windows removed my grub bootloader at least 3 times even once after i started using seperate drives.
ive never had the opposite happen.
Why do you not avoid using Windows instead?
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Never happened to me, but then again, most of the shit I see people complain windows does has never been my experience either.
I don't even boot windows anymore and it still takes over the first boot spot randomly.