Prevent mac from sleeping

Hello everyone,
Does anyone know how to prevent the imac from going to sleep when using the restore disk to start the system. This is the state I need the imac in to create the requited backup before I whipe the system and do a clean install of Mountain Lion to resolve all my issues. I have many system issues that started with upgrsade to snow leopard got worse with uprade from mobileme to icloud, and continue to pleague me with the latest upgrade to Mountan Lion.
Hardware Overview:
Model Name:          iMac
Model Identifier:          iMac8,1
Processor Name:          Intel Core 2 Duo
Processor Speed:          3.06 GHz
Number Of Processors:          1
Total Number Of Cores:          2
L2 Cache:          6 MB
Memory:          4 GB
Bus Speed:          1.07 GHz
Boot ROM Version:          IM81.00C1.B00
SMC Version:          1.30f1
24-inch, Early 2008
Processor 3.06 GHz Intel Core 2 Duo
Memory 4 GB 800 MHz DDR2 SDRAM
I can not add anymore physical ram
Graphics NVIDIA GeForce 8800 GS 512 MB

Thanks, but these options are not available from the restore disk startup. I am usinig the diskutility on the restore disk to create the clone of my had drive. I think that the caffeinate command is working, but I am not able to run the diskutility from that terminal window.

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File sharing as mentioned in your post,
Recently installed antivirus software,
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Print Que not cleared
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Solutions suggested are
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Best.

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Dear Community:
This is my printer:
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Product Name HP Officejet Pro 8600 N911g Product Model Number CM750A Product Serial Number {Private Information Removed} Service ID 23022 Firmware Version CLP1CN1150CR Total Page Count 4187
2. Operating System installed (if applicable)
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3. Error message (if any)
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4. Any changes made to your system before the issue occurred
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5. In the subject title, include a brief, specific description of the problem, and your product information (i.e., product name of your laptop, notebook, printer, other device, etc.)
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This question was solved.
View Solution.

OK, here are more specific instructions:
1. Open Finder (double-click the Finder icon in the Dock).
2. On the left side of the resulting Finder window click on Applications.
3. Double-click on "Image Capture".
4. Follow the instructions above.
Say thanks by clicking "Kudos" "thumbs up" in the post that helped you.
I am employed by HP

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Hi Radium88,
You can prevent your MacBook Pro from going to sleep using the steps in this article -
OS X Mountain Lion: Prevent your computer from sleeping
http://support.apple.com/kb/PH10679
Specifically -
Choose Apple menu > System Preferences, and then click Energy Saver.
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Thanks for using Apple Support Communities.
Best,
Brett L

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Try Ejecting the External HD before sleeping the Mac.
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Restore disk OS X Mountain Lion: Prevent computer from sleeping

Please help, I need to create a backup using the disk utility on my restore disk. However, the computer keeps going to sleep and corrupting the backup. How do I prevent my computer from sleeping while the imac is creating the backup?
Processor 3.06 GHz Intel Core 2 Duo
Memory 4 GB 800 MHz DDR2 SDRAM
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Graphics NVIDIA GeForce 8800 GS 512 MB
Software OS X 10.8.3 (12D78)

I would recommend using a proper tool for backing up, if you want to create a bootable clone use either SuperDuper or Carbon Copy Cloner. Either that (or even better use a clone and) or use Time Machine.

Reconnection issues with Mac (from sleep)

Hi, I have only had BT infinity for a few days now, but this is driving me mad already.
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Cheers
djt1

Ermm, now if you go to the Airport Icon and click on Network preferences, and then the wifi networks have you made sure BT Fon or BT Openzone are not set to connect? If they are in there then delete them.
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Regards Edd
Check your Line
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Can I wake my Mac from sleep with network activity?

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Elamc,
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IPad prevents MBP from sleeping

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I shut down all programs on the MBP and made sure that the Preference for Waking on Ethernet Access was not checked.
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These commands:
sudo sysctl -w net.inet.udp.log_in_vain=1
sudo sysctl -w net.inet.tcp.log_in_vain=1
will give you output like the following in the console log:
01-10-12 20:20:45,000 kernel: Connection attempt to TCP 192.168.1.17:554 from 192.168.1.15:37481
In my case it was Synology Surveillance station trying to connect to port 554 on my laptop...
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Prevent mac from sleeping

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