hdiutil attach /tmp/ElCapitan.dmg -noverify -mountpoint /Volumes/ElCapitan
El Capitan maintains broad compatibility with older hardware, running on most Macs released from mid-2007 onwards. Minimum Hardware: 2GB (4GB or more recommended for smoother performance). 8.8GB of available disk space for installation. Processor: 64-bit Intel processor. Compatible Mac Models: Early 2015, Late 2008 (Aluminum), or Early 2009 or newer. MacBook Pro: Mid/Late 2007 or newer. MacBook Air: Late 2008 or newer. Early 2009 or newer. Mid 2007 or newer. Early 2008 or newer. Early 2009. Key Features of Version 10.11.6
Introduced system-wide graphics acceleration, improving efficiency by up to 40% on compatible hardware (2012 or newer). Split View: