Long time linux user, but new to btrfs (only dabbled). Did the system just bridge my SATA and NVME?

My PC has 4 drives: two 250gb nvmes, and two 1tb satas.

The nvmes are for linux and windows, the satas are for /home and S:\ (for Stuff)

For the purposes here we just need to worry about one nvme and one sata. Upon installing I selected the two drives, clicked automatic, clicked "pls wipe and encrypt", and then it installed. I was under the assumption that it would ask me which device I would like to boot and which I would like to /home. That's my bad, and honestly I'm impressed that when btrfs says "automatic" is means automatic. But that begs the question, what exactly is going on with my disks?

For one, sa you can see, the sata was selected for /boot, so I'm for sure going to have to redo this, but most notably my nvme was mounted to /sysroot.. is that a subvolume that extends /? If so, by what measure does the system allocate data between the drives, is it totally random? Also, the efi is obviouosly a fat32, but why does /boot have its own ext4 part? Is that so other distros or my "oh-shit-i-need-to-fix-this" usb can easily locate it?

To the btrfs vets out there, do you prefer to:
A, bridge your fast and slow drives in one big btrfs conglomerate
B, configure slow drive(s) as their own btrfs for /home (could make adding storage easier)
C, just do ext4 for /home for simplicity

I know bazzite targets smaller single drive devices typically so information on this topic is greatly appreciated!
Screenshot_20241228_172429.png
Screenshot_20241228_172503.png
Screenshot_20241228_173439.png
Was this page helpful?