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The original was posted on /r/windowsondeck by /u/Chaomayhem on 2023-08-08 21:37:23.

Hello everyone. I recently attempted to set up dual boot on my steam deck using this guide.

I followed everything this guy did in the video except when shrinking the home partition I didn’t shrink it as much as he did because I only wanted 100 or so GB allocated for Windows. I set the new unallocated partition to NTFS like he did. Applied the operation

Now here’s the part where something went wrong. When he’s installing windows he had two “extra partitions” that he deleted? And then he created a new one and installed windows there. I did not have these extra partitions. I didn’t want to delete any partitions that may have SteamOS on them so I just selected the 100GB partition I created with Gparted and installed windows there.

Now when I boot up and go to the bootloader there’s no option for SteamOS? Did I delete it? Is there anyway to get it back through the file manager?

How do you properly do this? Clearly the guy in the video skipped a step.

TLDR: Followed linked video exactly but ended up not having the partitions he did when installing windows. Installed it to new partition I made and now SteamOS is gone