600
Lots of PCs are poised to fall off the Windows 10 update cliff one year from today
(arstechnica.com)
This is a most excellent place for technology news and articles.
I'm starting to set up a dual boot and this helps me. I have a 1TB SSD with Windows, and later bought a 2TB SSD for games. I've shrunk the latter's partition so I can set up Linux, and I may reconfigure bios to make that the default boot device.