Make sure you boot your liveUSB/installer on UEFI mode. On the installation in the partition phase the top of the screen should say "EFI" and "GPT". So basically, boot with F11 or whatever key you need to select the boot media and pick the one with UEFI.
It took a few tries for me to figure out what's going on. Once I did that it installed just fine.
but as explicitly stated there, and in many posts in the forum (please always use the “search” button), dual booting is not supported, and only good-willing people might offer their help.
And, to be honest, this looks to me like a strange case to troubleshoot.
If you have an EFI boot system, you should already have a fat32 formatted partition mounted at /boot/efi, and should be able to see that from the live USB with gparted (as shown in the guide) or using the terminal (lsblk or fdisk).
That partition should be used in the installation process, “partitions” step, install “bootloader on” at the bottom.
If you use MBR not EFI, you need to put the disk not the partition for the bootloader at the bottom. E.g. /dev/sda not /dev/sda1.
No need to erase anything if you don't want to loose Windows!
The part of the post you quoted, formatting the disk, is due to the fact that that procedure explains how to start everything from scratch, formatting, reinstalling Windows first and then Garuda.
You need only the final step if Windows is already there.
The critical point imo is to understand your setup (MBR/BIOS? GPT/UEFI? Or even MBR with GPT) and relevant existing partitions)
If you're going to format or change to GPT, make sure your EFI partition is 1GB (FAT32) at least. That should be more than enough space to run multiple OS's. I installed windows 10, ubuntu, mate, mx linux all on the same drive and could select each OS from the bootloader.
Can you share some link that explains this requirement?
Or explain yourself “What file(s) is(are) going to be so huge that needs to be AT LEAST(??) 1 GigaByte”?
its simple it seems that garuda has installed on your system just you cant able to acces it .you can access it by pressing boot key in beginig and selecting the partition where the boot loader is installed i had similar problem in linux mint uefi installation.
My Apologies, you're right it doesnt need to be that big. I ran windows, linux and hackintosh on the same drive and its hackintosh which needed the EFI partition to be at least 500mb, so i made it a gig to be safe.
I assumed the /efi partition, which is 300 MiB in size and currently taking up 823,000 KiB.
My square consists of 2 Garuda DEs, Salient OS (as Garuda Multimedia replacement) and Heffilinux.