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I heard that a hard disk in a laptop is more susceptible to damage if it is turned on. A person damaged their laptop's hard drive by having their laptop on while it was in their backpack.
I also carry my MacBook Pro around in my backpack. Is it safe to have it in sleep mode while it's in my backpack, or should I turn it completely off?
1+1 Carried several around for years in sleep mode. Never had an issue – Dave M – 2010-02-04T20:51:32.273