I have a 1TB SSD with Windows 10 on it and a 3TB HDD that i use for storage. I want to install Fedora 35 KDE Spin on the HDD next to the data partition, so I shrank the data partition in Windows disk management.
Why not install parallel to the windows in the ssd just make unallocate 60gb(recommended) of storage in your ssd and select that storage with / and make it btrfs try to install it you will see a better experience.
And the unallocated will be Marged with the normal ntfs that you can in windows and fedora also.
Select advance option custom with guided select that unallocated of your ssd and here you go install it and everything will be fine don’t worry and if you want to install in hdd you can do it as i have told in the ssd one
Leave it just follow it tap on the plus button and set 78848mb and mount point (/) filesystem btrfs recommended and a partition and then use a other space 1024 as (/boot) as another partition and then click done. Sometimes /boot may not be required but having it in the first place is not bad and install it i hope it will install fine.
If you need something like a screenshot let me know if you still can’t do that.
Here is a screenshot for your easy solve
Try in both modes i only have workstation iso so i run a vm and do it there with 20 gigs you just create a single btrfs with / as mount point and do accept changes and once you have done that done ok.
I think the issue in that forum post is probably something else than in my case, as I can’t even begin the installation process. They actually solved their issue by installing in non-UEFI mode, which I think is a bad choice.
Okey try it again reboot and insert usb again and lets try.go to custom option and thn First create a /boot/efi with 1gb and / root (btrfs) rest of space and try to install it again i think it should work i think the issue is actually your system need a space for bootloader but as you don’t have one in the 3tb of hdd so the error happens try again the actual bootloader for windows system is on ssd maybe that is the reason of failture so do it like i said i think this time it will be ok.
I tried this many times with different USB drives and creating the /boot/efi partition first but no luck. 600 MB is enough for /boot/efi because Fedora by default uses a 600 MB /boot/efi and a 1024 MB /boot
I actually tried doing the same thing in a VM (I installed Windows, added a second drive and partitioned it like I have on my real PC) and it worked without any errors, so it’s weird that it doesn’t work on my real PC
I really don’t know why what is the issue but the last thing i could say or suggest that if you can just try with the workstation iso
and do consider checking the hash before making usb
Go to the directory of the containing file with cd certutil -hashfile filename.extension SHA256
Go to the file containing folder with files app and open terminal sha256sum filename.extension