this post was submitted on 12 Jan 2026
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Linux Mint

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I started a dual-boot install at the end of the day, and now I'm in trouble and too tired to think right. After a basic default install,it only boots to mint now. No dual boot. I'm going to sleep now, but any pointers you can offer will give me a jump on my day tomorrow. Thanks.

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EFI? Boot into the boot menu (f12) and pick the windows option. If it boots you're good, if it doesn't boot then whoopsie.

In mint open the partition management tool (forget the name) and see if windows partition is still there, or if it's one big ass Mint partition.

[–] ProdigalFrog@slrpnk.net 7 points 1 month ago

You could try I think a grub probe command to get grub to rescan for other operating systems.

Setting up a dual boot while tired can be a bit risky, since it's possible to slip up and install onto the wrong partition or drive and overwrite the other OS. Hopefully not the case here!

If your other OS is on a separate drive, you could also check your BIOS to make sure the SATA or PCIe slot its connected to is enabled.

[–] tyrant@lemmy.world 6 points 1 month ago

As long as you didn't overwrite the other os you can always boot from bios to the other drive or maybe even f12 during boot for menu. Temp workaround at least

[–] Xaphanos@lemmy.world 1 points 1 month ago

I found it. There is a utility called "boot repair". Fully automatic. No thinking needed. It just worked.

Thank you all for the help.