readonly is deprecated

[Zarcross-dev]

I saw an error on the basic.sh file, on the line 17, replace "readonly" by "readonly=on" without doing this, the guest machine will crash at MacOS startup (The second part of the installation and i think on OS Boot too). PS: I don't use so much GitHub, i don't know if it's here to post the updates to do on the code, also, sorry for my bad english i'm a french dev..

[elin1923]

I'm having the same issue