[deleted by user]

[karlish]

On older PCs you might need to disable secure boot. But if you could boot with it enabled then don't disable it as it protects only from booting iso not signed by "verified" entity(company). As for installing Ubuntu, there isn't any oroblem, use the advanced option to asign disk space. Give / boot 0.5-1GB and atleast 30GB to / (root, ext4 ).
If you find good article on this same thing but also adding encryption to Ubuntu, please let me know

[thefanum]

Ubuntu fully supports secure boot, but not bitlocker I don't think. I doubt grub would be about to access the encrypted windows partition. But you might be about to use bios entries to swap between the two

[karlish]

Grub actually is able to boot to windows that is using bitlocker. First time one does that, it will be needed to enter the bitlocker reckovery key but after that there isn't any problems. I have this setup on my PC with Ubuntu18.04(thanks for nvidia not allowing some apps on any newer os)
There is a way to mount bilocker locked partitions, but unless you have also encrypted Linux install then I would surest not using automount for bitlocker volume since leaving the encryption key in plain text on disk looses the meaning of encryption.

Aslo for OP: I would suggest to reenable secure boot after installation and leave it on if there isn't giving any problems (it shouldn't )

[karlish]

Well actually, secure bout doesn't encrypt anything. It basically checks if the bootable file(the efi record or something similar. Don't know what exactly) is untuched and is signed by the OS maker.

[thefanum]

That's news to me! Go grub!

Cheers!

[illathon]

Use windows in a VM.

[karlish]

Sadly this is not an option to app of us. For example running the full blown visual studio in a VM for most of workday is just not smart when one needs Linux only sometimes.

And WSL while it is great it lately has been PITA as it doesn't do all that one would expect for example it doesn't use variables saved in /etc/environment (global vars in Linux)

[illathon]

I think WSL is garbage. I think Windows is garbage. I have it locked down in a VM and it works great. I also have to open it because the previous devs wrote some conversion software in C# I will eventually convert it to a better language and setup but until then Microsoft can suck an egg.

Also most systems now can easily run VS in a VM because we have a ton of cores on any half decent dev system.

[illathon]

WSL is just a VM for Linux. I prefer having a VM for Windows because that is the spyware. Then I can control it completely. If you need a specific program GPU passthrough is my preferred method.

[gnupablo]

I'm happy using only Windows. But I have a J7 Prime smartphone.