Sleep or power off for traveling?

Is it ok to transport the MBP (in the back-bag) while it is in the sleeping mode? or should I turn it off totally before transport? Please let me know, thanks

Hi Tom71,
The MacBookPro actually has various possible sleep modes, but the default is one which both saves a 'sleep image" to disk (in case of a battery running out, etc - hence the slow "going to sleep" process, and maintains the contents of RAM - hence the fast wakeup unless the sleep image has to be accessed, but the continuing current drain).
Maintaining the contents of RAM necessarily uses power.
You can change the sleep mode using terminal if you wish, but a useful little utility called "SmartSleep" makes this easier.
Your choices are essentially:
1) the default (discussed above) - slow to sleep, fast to wake, with power maintained to RAM.
2) "sleep only" mode - in which power is maintained to the RAM, but no sleep image is written - fast both in going to sleep and waking up but less secure than the other options and still uses your battery.
3) "hibernation" mode only - doesn't maintain power to RAM, but writes the disk image - slow to sleep and slow to wake, but it substantially reduces power consumption while sleeping over any extended period and is safe if your battery runs out anyway.
(there are two additional modes which are relevant if you are using "secure virtual memory")
If you want to use Terminal commands to make the changes see http://www.macworld.com/article/53471/2006/10/sleepmode.html
There is also a Widget available called "Deep Sleep" - http://www.axoniclabs.com/DeepSleep/ that will "hibernate" your Mac if you wish.
Cheers
Rod

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Sleep or power off for traveling?

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