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Mac automatically goes to sleep (despite sleep being set to never) when trying to upload data to internet or external hard drives.

208 Views 1 Reply Latest reply: Nov 28, 2012 1:12 AM by BDAqua RSS
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Nov 28, 2012 12:45 AM

So I have a problem....

 

We use a computer as a server at work. It has 400GB of data on it, and as it is an old machine, I want to back it up.

 

I have tried 2 different external hard drives – both of which make the computer go to sleep after 15 mins, despite this being set to Never is preferences.

 

This isn't limited to hard drives, as I have tried transferring the data online – same issue.

 

It's worth noting that when the computer is in normal use, it never goes to sleep, just in the instances described above.

 

I have also tried using Caffeine, which is supposed to prevent computer from sleeping, to no avail. I have also deleted the file /Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist and updated my settings, again to no avail.

 

All software is up to date.

 

Any advice?

PowerMac, Mac OS X (10.5.8)

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