This isn’t a question, instead is the only way I can find to report a problem.
Following multiple downloads of Elements 5 (elementaryos-5.0-stable-1.20181016.iso), into an old MacBkPro 2011 running any one of 5 Os X\macOS versions to do downloads with - unsuccessfully - there seem to some disfunction between youse (sic) & me. :~\
Each .iso downloaded reports that “ . . disk image couldn’t be opened; Reason; no mountable file systems"
A 34 yr Mac-er with only light LinWin exposure, I suspect it may be me or my stuff not recognising what is contained in the .iso a.k.a. .dmg.
Having tried the usual Mac fixes for this problem, + some others, there is no success to report.
I (& others) am tired of APPL Inc suits stuffing up what was a half way decent OS. One that I could do 'big work' in, but now Mac-life is a struggle. Your aims for your OS sound similar what made the original Macintosh concept so easy to do work in, in that the OS soon disappears, and the work rises cleanly & alone to the surface.
Hope there’s an answer around. Looking fwd to learning E 5+ .
Cheers, Jen, Brisbane Oz