Involuntary reboot log 8.3

Hard reset when a system software update hung forever at the reboot phase.

Statistics so far

• Failure type: hard reset
• OS version: 10.11.4
• Uptime at moment of failure: unknown, probably several days
• Kernel panics: 1
• Hard resets: 2
• Total failures: 3
• Start of recording keeping: 2 June 2015
• Total days to date: 184 days
• Average time between failures: 61.33 days

Historical data

For comparison, previous generations of machines (from most oldest to most recent) that I've used have had averages of:

• 22.73 days (over 1,364 days): iMac (17", Early 2006).
• 20.06 days (over 321 days): iMac (27", Late 2009).
• 19.11 days (over 707 days): MacBook Air (13", Late 2010).
• 41.86 days (over 293 days): MacBook Air (13", Mid-2012).
• 2.0 days (over 2 days): loaner laptop (MacBook, unsure of model).
• 27.176 days (over 462 days): MacBook Air (13", Mid-2013).
• 35.0 days (over 140 days): as above, but with a replacement shell.
• Current machine: MacBook Pro (Retina, 15-inch, Mid 2015).