Take the 2-minute tour ×  Whenever I close the lid of my MacBook
Pro it takes over a minute to write out my memory to disk. This
is part of the Mac's safe suspend option, which allows it to
restore your memory from the hibernation file if the Mac loses
power (say you change batteries or they go flat) while it is
asleep.  I prefer my machine to go to sleep as soon as possible
and am willing to take the risk of an unclean shutdown should my
battery go flat.  A long time ago I disabled this behavior, but
have recently reinstalled my machine and OS X has reverted to
the default behavior.  How can I disable the hibernation action
when I close the lid?  share|improve this question add comment
migrated from serverfault.com Jan 18 '12 at 10:30   2 Answers
up vote 10 down vote accepted  To disable Safe Sleep:  $ sudo
pmset -a hibernatemode 0 $ sudo nvram "use-nvramrc?"=false
Further details can be found at
http://www.normalesup.org/~martinez/macosx/, Including how to
enable it again.  share|improve this answer add