Old machine is small, fairly self-contained, doesn't draw much power (processor: ~24w). Well suited to a dedicated use appropriate to its capabilities. Currently Setting up Storj and personal wiki.
# Specifications
- Mac Mini 2,1 
A1176 (2007)
- 1.83 GHz Core2Duo T5600
- 4 GB RAM (maxed) PC2-5300
- 80 GB HDD (not the easiest to replace)
- Iffy optical drive
- 4 TB HDD, USB enclosure (limited to USB2)
To disable unnecessary GUI I ran this in ~April 2021:
sudo systemctl disable lightdm
If I need to run it with a monitor, I can just replace "disable" with "enable" and run the command again. See also: StackExchange discussion
In August 2021 everything got messed up somehow. It wouldn't boot (after a power outage, maybe?)
I was able to finally get it to boot by editing:
/etc/default/grub to say "text" instead of "quiet splash" then sudo grub-update
This permitted booting to a text login. But networking was still down. Can't get ethernet or wlan to work at all.
# Possible future upgrades:
- Drive(s) (optical is 12.7mm)
- Processor
- In case I need to reinstall Mac 10.6 from USB
Wiki is working on this box now, thanks to some guidance from the Sunday Pioneers. Notes: 2021-04-18 SSH Wizardry