Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

As long as Wake for network access is checked off, I was wondering if there is a way to remotely boot up a Mac computer. Say your Mac is fully shut down, you're off somewhere and want to use Back To My Mac to log in remotely but you can't because your Mac is off. Is there a way that you can remotely boot it and then use Back To My Mac to take care of the rest?

share|improve this question
    
    
This is not what I'm looking for. I'm not looking to wake a sleeping computer. I'm looking to wake up from a cold boot aka after hitting the shutdown button. I know it's been done on PCs. –  TheGamingArt Mar 6 '13 at 17:43

2 Answers 2

This is what WakeOnLAN was designed for, to remotely turn on a computer. This is what you want to do, right? It doesn't what sleep state a machine is in, WakeOnLAN will turn it on. To use it across the internet, you want to set up some type of VPN on your network to connect to before using it, or else there is a BIG security hole.

share|improve this answer
    
To my understanding and from digging into this, it just enables you to wake up a Mac that's in sleep mode. –  TheGamingArt Mar 6 '13 at 19:51
1  
@TheGamingArt that's half correct: The full specification allows a computer to be waken up from any state of sleep, there are multiple sleep states a computer can be in. This is possible because the network port on the computer stays awake, listening to network traffic, and if it gets the magic combination, it will turn the computer on, or wake it up, it's all the same. Wiki Page –  BigHomie Mar 6 '13 at 19:54
    
There is a big difference between a NIC Wake mode when a computer is shut down and a computer being a SLEEP. Also, the application mentioned for WakeOnLan was discontinued (per the link you provided and their official site). I did manage to try out DipicusWakeOnLan, but this also failed using wireless Mac information and such. My iMac does support Wake for network access and Wake On Wireless. Otherwise (because of Apple's lack of specitivity) the wake features may only be actually listening for packets during the iMac's LITERAL 'sleep' mode rather being fully shut down. –  TheGamingArt Mar 11 '13 at 2:37
    
Also, the VPN access is my iCloud account through my Time Capsule. –  TheGamingArt Mar 11 '13 at 2:38
1  
@MDMoore313, there is no BIOS, at least in contemporary Macs. When it comes to WOL, ahhhh, it's great to be a PC. :P - NomDeGuerre –  Canadian Luke May 10 '13 at 23:03

What you are looking for is LOM (lLightsOutManagement) which you can use to turn on any LOM-enabled machine (and do much more magic). But as far as I know that was only built into Apples XServe machines. It requires a second IP-adress that will always be accessible.

But I do not think that we are talking about sich a machine. So the only way to get a "normal" mac back up again after a power failure is via the systemsetting "reboot after power loss". And then you can plug it into an IP-PowerCord which you can turn on and off via -for instance- a web-interface.

But when you are already stuck in the situation, I belive there is no way around sending somewone to the mac to press the power-button.

share|improve this answer
    
-1 only because the user is not referring to a power loss, but waking up the machine at will. Also, reboot after power loss, while a nice option, is not the only option for powering on a machine after power loss. –  BigHomie Mar 7 '13 at 13:40
    
As far as I know WakeOnLan only works when the computer is in some kind of sleep mode. But as @TheGamingArt described the remote machine is off. Which means, no WakeOnLan. So the only ways to power up a completely turned off mac are either LOM (which is not available) or the method I described using an IP-Powerswitch to give power to the mac to start it via the build in "restart after powerlos" which works even when the machine has been shutdown correctly and power is switched off/switched on. –  heiglandreas Mar 7 '13 at 17:27
    
WakeOnLAN can be used when the machine is off, as long as the BIOS supports it. This is googlable. There are multiple sleep modes, powered off being one of them. –  BigHomie Mar 7 '13 at 18:06
    
This is something I'll have to dig more into obviously. Everything I saw WakeOnLAN, when waking from (with clarification) a computer being completely shut off while the network card is left in a wake mode, was not possible on a Mac. Then again, I have not tried it yet which I will this coming weekend. An IP Powerswitch is the method I've seen floating around, but it's really not feasibly worth it in my opinion. I was a straight packet shot to boot it up. I'll report what I find back. Thank you guys for the feed back though and please let me know if there are any better ideas. –  TheGamingArt Mar 8 '13 at 20:14

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.