worst nightmare. accidentally deleted my entire OS drive while installing garuda on another drive.
I have an external hard drive in btrfs format with snapshots that is in fine condition, the drive reads on the new garuda install. please tell me there's a way to restore snapshot from my external hard drive so I can save my machine.
If you have wiped the whole device then there is nothing you can do, BTRFS snapshots can even save you from accidentally deleting the whole root partition but they don't survive if you wipe the whole disk with something like mkfs which is what KDE Partition Manager uses.
You can probably just use rsync to copy the snapshot files across to the internal disk, but you'd want to do that from within a live installer environment rather than the booted OS.
If this is all you did you might be able to recover the entire partition with software like TestDisk or gpart. If you created a new partition in the place of old partition then I don’t recommend TestDisk or gpart, you should tell
The contents of snapshots (does it include everything or only @ subvolume etc.)
Risks like that are the very reason why I strongly discourage Linux newbies from attempting to dual-boot with Windows.
It is simply the complexity is already overwhelming to intermediate Linux users, let alone Windows refugees.
And why you are attempting that while your current storage device is still plugged-in? You could just disconnect it first, then connect your secondary drive alone then do the Garuda install.