how to install windows OS on steam deck AFTER bazzite was installed

I've been running bazzite for a while and most Dual Boots require Windows be installed first. How would I install Windows after Bazzite has been set up?
12 Replies
Rin
Rin3mo ago
if you are doing separated drives method remove your Bazzite drive same drive afaik it is not possible, Windows will overwrite the boot partition
wolfyreload
wolfyreload3mo ago
I actually tried that in a VM to see if it would work. I managed to dual boot with installing Windows after Bazzite. But I haven't tried it on real hardware yet but it shouldn't be an issue. These where my steps: * Make sure that your partition table is GPT - very important if it isn't you'll need to re-install Bazzite, as this is needed for EFI boot * Backup your stuff (just incase) * Boot Linux mint and shrink your Bazzite partition in Gparted * Then boot Windows installer, selected advanced and select the empty space for the Windows install * Only downside is Windows will share your EFI partition but in my tests it didn't overwrite anything of Bazzite's and they both worked together However... I would recommend installing Windows on a different drive entirely if possible. It's generally a little safer that way Interesting thing to try. Windows might make it's own EFI partition then or it might randomly do it's own thing I can test it in my VM
wolfyreload
wolfyreload3mo ago
Looks like your idea worked. Windows made it's own efi partition, I labeled the Bazzite one, linux-home since it didn't let me set it as blank and the Windows install left it alone. Put the boot,esp flags back onto the bazzite efi and we have a working dual boot where windows isn't sharing EFI with Bazzite. Nice idea @$ sudo kill me
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Linus Xu
Linus Xu3mo ago
In my case windows and bazzite do share one ESP but I have to efibootmgr disable the windows boot entry
HikariKnight
HikariKnight3mo ago
windows will wipe the efi if it detects it during install
wolfyreload
wolfyreload3mo ago
Weirldly in all my tests Windows 11 has just added it's efi entry and left the linux entry alone, didn't break the linux install in my tests, I was surprised. I need to confirm on proper hardware though.
HikariKnight
HikariKnight3mo ago
must have changed that then, maybe they changed it with windows 10 or 11? i remember with windows 7 and 8 and 8.1 at least it just wiped the efi each time
wolfyreload
wolfyreload3mo ago
Tested with Windows 11. I'll need to test with Windows 10 Wouldn't be surprised with 8.1 killing efi though
Linus Xu
Linus Xu3mo ago
Based on my boot camp experience 10 should also leave the esp intact
HikariKnight
HikariKnight3mo ago
my macbook was from 2009 so my bootcamp experience was the horrible efi+bios hybrid partition scheme that constantly broke :clueless:
Linus Xu
Linus Xu3mo ago
Ouch It’s finer on later intel models
HikariKnight
HikariKnight3mo ago
yeah but i dont want to give apple more money than the $100 they got from me for the late 2009 macbook i bought back in 2009 the rest of the cost was covered by the state as i needed a laptop for typing at school and i already had just bought a windows gaming laptop for $700 so i was like "hmm i got $600 to buy a laptop with and a macbook costs $700, this might be the best time for me to get a macbook and learn the system" that was teen me planning ahead 🤣
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