Document expert mode

[NAThompson]

The blog post announcing M2 support indicates that the user must enable expert mode in order to install. However, the precise means of entering expert mode is not documented.

By some sleuthing around, I was able to succeed with:

export EXPERT=1
curl https://alx.sh | sh

However, I found this option by searching around the git repo.

(Sincerest apologies for not just submitting a fix-I couldn't figure out where it should go!)

[DavidBuchanan314]

I might be wrong, but I suspect expert mode is deliberately obscured (or, not readily documented) so that non-experts don't end up using it

[jannau]

Yes, expert mode is is not documented for a reason. It was initially an option in the installer but too many people used that and ended up selecting unsupported options proving that they are no experts.
The outdated information from the M2 blog post should be redacted.

[marcan]

This is undocumented by design. When it was documented and an actual prompt, too many people decided they were "experts" when they absolutely weren't, which led to a support nightmare.

I'm not sure why people keep reading year-old blog posts and thinking that is the state of things today. I have updated the blog post with a disclaimer at the top. You absolutely do not need expert mode to install on M2. That was only required for like the first month after the machines came out.