nanook
@AmosBurton_ThatGuy Yes you can, but I've not been using Windows frequently enough to remember how, but if you google re-install windows boot block I believe you can find instructions.
@AmosBurton_ThatGuy Ok, Catchy is based upon Arch, and I'm not sure how you can tell grub on arch how to look on other drives for bootable OS's. In Ubuntu it's an argument in /etc/default/grub, but arch it is entirely different and I've not run multiple OS's on it. But with Ubuntu there is a grub argument that says to look on other drives for bootable OS's and you need to enable that for it to find OS's on other drives. There must be something similar in CatchyOS, but since I haven't played with it, and when I was using Arch it was the ONLY OS, I don't know where to find that. Alternately, you could just switch boot drives in BIOS, or hold F8 after a reboot to select the Windows drive. I do understand though that it is a lot more convenient to have it in the boot menu, unfortunately I haven't any experience with Catchy or even Arch with multiple OS's so can't help with that.
First, which drive is your boot drive?
I've got a Gigabyte X299 Aorus Master with i9-10980xe overclocked at 4.8Ghz, two nvme drives mounted on the motherboard, this is about the most power hungry consumer level CPU you can get (maxes at around 540 watts), yet the ssd's which are also fairly heavily used in a database, only run at about 29C. Perhaps your GPU is heating up your SSDs? I have no active cooling on mine either, just the cheesy heat sinks. I'm running 6.11.2, unfortunately 6.11 kernels past two have some code that breaks the i9-10980xe so stuck at that for the moment.
@tekato Sure you can use a third party app, but X without ANY app re-directs to whatever display you want it to. And there are precious few third party apps for Wayland, at least half a dozen that I know of for X.
@tekato That doesn't solve for x2go, rdp, or guacamole, I've got customers using all of those plus vnc.
What I ran in my Linksys WRT54G was DD-WRT, it provided all the normal functionality sans the occasional lockups the stock firmware did, and in addition you could attach to other networks, you could participate in a mesh network, you could increase the transmitter power from 7mw up to as much as 100mw (and this really helped in my environment).