[HOWTO] Create a live cd with Catalyst 2.0

[Anon-E-moose]

Anyone know if this is still accurate for catalyst 3?

If not, any idea where it differs?

(and yeah, I'm aware of a hell of a necro bump )
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PRIME x570-pro, 3700x, RX 550 & 560
Acer E5-575 (laptop), i3-7100u - i965
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5.5.18 zen kernel, gcc 9.3.0, profile 17.1 (no-pie & modified) amd64-no-multilib, eudev, openrc, openbox, palemoon