Boot Process:Power onBootROM initializes: POSTEFI selects OSControl passes to Boot Loader: boot.efi
Boot.efi loads Kernel Environment: loads kernel drivers: loads Kernel extensionsControl passes to Kernel
Kernel initializes /sbin/launchd is ran
LETS GET TECHNICAL
NVRAM:NON VOLATILE RANDOM ACCESS MEMORY
▸ Symptoms include: speaker volumescreen resolutionstartup disk selectionrecent kernel panic
LETS GET TECHNICAL
SMC :SYSTEM MANAGEMENT CONTROLLER
▸ Symptoms Include: everything
▸ Desktop vs. Notebook
DIGGING DEEPER
DOWNSIDES OF CONSOLE
▸ The only information readily available is from what occurs while console is open
▸ Digging deeper requires creating a system diagnostic reporthttps://help.apple.com/console/mac/10.12/index.html?localePath=en.lproj#/cnsl4f3fc2df
RESOURCES
▸ Unix for the Beginning Mage http://unixmages.com/ufbm.pdf
▸ Useful Keyboard Shortcutshttp://www.cultofmac.com/317935/top-10-mac-keyboard-shortcuts/
▸ How to reset NVRAMhttps://support.apple.com/en-us/HT204063
▸ How to reset SMChttps://support.apple.com/en-us/HT201295
▸ Terminal Cheatsheet for Machttps://github.com/0nn0/terminal-mac-cheatsheet
▸ Little Book about OS Developmenthttps://littleosbook.github.io
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