My Mac 10 refuses to 'Wake-Up'! PROBLEM SOLVED. THANKS!

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woodpig":1xk8glrt said:
RogerS":1xk8glrt said:
You can achieve that with a Restart.

No you can't. A restart does not initialise the RAM that's why it's quicker than shutting down properly.

Do you have any evidence for that statement? Curiosity more than anything.
 
Thanks Jonzjob.

It tells me:

OS X Yosemite Version. 10.10.5.

Come to think of it I had been using MS/Word on the Windows Machine and had neglected to use the Mac for a few days before. MS/Word is Naff, and I downloaded Open Office. Perhaps the Mac was sulking? :D
 
woodpig":5okphke3 said:
RogerS":5okphke3 said:
You can achieve that with a Restart.

No you can't. A restart does not initialise the RAM that's why it's quicker than shutting down properly.

Where on earth do you get that idea from? It certainly does free up RAM...just take a peek at Memory using Activity Monitor.
 
Please re-read my post,I didn't say free up RAM, I said initialise. You can use the command line SUDO PURGE using the terminal app to free up inactive memory but it won't necessarily get rid of any corrupt data.

The only way to completely purge the RAM is to shut the machine down. If you're one of many people that like to leave the machine on all the time that's fine but you could benefit from shutting it down once in a while.

"In some cases, a hard reboot is needed. For example, if for whatever reason you need to empty out everything in the RAM and disk caches, then you should restart."

http://mac-how-to.wonderhowto.com/how-t ... t-0166928/
 
Wuffles":2z86yv74 said:
woodpig":2z86yv74 said:
RogerS":2z86yv74 said:
You can achieve that with a Restart.

No you can't. A restart does not initialise the RAM that's why it's quicker than shutting down properly.

Do you have any evidence for that statement? Curiosity more than anything.

I asked for that, not a blog about it, or a lesson in what RAM is.


Sent from my iPhone using Tapatalk
 
My company sent me on a computer maintenance course in London many years ago and this was one of the first things we covered. Most tech guys say the same thing these days when folks have problems with their computer "have you tried shutting it down and turning it back on again?" This simple act still cures many folks problems with PC's (and Macs).
It's of no consequence to home users but the last two companies I've worked for over the past 24 years both had the same policy, that all computers were switched off when staff went home in the evening. Computer equipment was kept for 3 - 6+ years depending on status and by far the biggest number of malfunctions (of computers) were DOA's.
 
woodpig":16tuqwuk said:
My company sent me on a computer maintenance course in London many years ago and this was one of the first things we covered. Most tech guys say the same thing these days when folks have problems with their computer "have you tried shutting it down and turning it back on again?" This simple act still cures many folks problems with PC's (and Macs).
It's of no consequence to home users but the last two companies I've worked for over the past 24 years both had the same policy, that all computers were switched off when staff went home in the evening. Computer equipment was kept for 3 - 6+ years depending on status and by far the biggest number of malfunctions (of computers) were DOA's.

So, there are two schools of thought on that. The point you make about companies requesting machines be shut-down over night would have been during some kind of "power saving initiative" being driven by a suit. Machines nowadays have power saving built in and I suspect as soon as users started moaning about updates being pulled in as soon as they switch on in the morning and found themselves to be less-productive as a result, the same suit would have flip flopped on that policy :)

From an IT perspective, having computers left on overnight meant forcing policy updates (proper policies, not ones written in meetings by suits) can be performed overnight, along with scans, blah blah widget removal, yadda yadda stuff. It made it easier for everyone.

The thing is, memory management has come on in leaps and bounds, especially with Unix based systems, and in particular OS X, and whilst I'm prepared to admit that a reboot can and often does fix things on certain systems, my question remains...

Reboot vs Shutdown?

I think we should leave it here really, there's nothing more to add to this particular off-shoot.
 
JC and his 12 mates John. I'll bet that you didn't know that you had started a dynamique ram fight involving "some kind of "power saving initiative" " to boot mate? :? :?

After all, all you wanted to know was why your machine wouldn't awaken after sleep. After all this bull about rams and the cowin about with everything could get yer goat up. :roll: :roll:

After those comments I think I'd better duck or grouse about getting hit :shock: :shock:
 
Well at least I have learned a few tricks John. Surprising how many ripples spread from a small pebble tossed into a smooth lake.. Main thing is, I got my machine back online, and I am muchly grateful for the input from everyone,

Now for some help in my workshop! [-o<
 
Wuffles":2on21dwo said:
.....
Reboot vs Shutdown?

I think we should leave it here really, there's nothing more to add to this particular off-shoot.

Other than to say that Level 10 gurus (ie at the very top of their game, knowledge and experience on the main Apple community support forum) quite explicitly state that, as you and I have both correctly maintained, a Reboot achieves exactly the same as a Restart from the perspective of re-initialising the operating system to a known, good starting point.

But if folks want to go ahead and potentially increase the stresses on their computers by repeatedly switching them on and off ......
 
Just to ask about another perspective on this...... Do all you people who leave your Macs on when unattended not worry about it catching fire or what have you ?
 
Grahamshed":mlvu85a8 said:
Just to ask about another perspective on this...... Do all you people who leave your Macs on when unattended not worry about it catching fire or what have you ?

Not at all. Why would the Mac be any different to any other device that you have permanently on in your house ?
 
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