Rebooting is the process by which a running computer system is restarted, either intentionally or unintentionally.

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How to perform FileVault authenticated restart when updating OSX from AppStore?

I am aware of the authenticated restart when using FileVault 2 on OS X. Running the fdesetup authrestart command does however restart the system immediately. Now, when running the OS X Update from ...
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19 views

Random crashes and reboots iMac 21" late 2013 OS X 10.10.5

My late 2013 iMac 21" keeps rebooting and occasionally freezing. I've tried to search the codes on the problem report but as a total layman, I'm not sure if I'm using the correct ones, is there anyway ...
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58 views

El Capitan - MBP Retina rebooting during sleep

I'm running 10.11.2 on a 15" MBP Retina (Mid2015) and experiencing a regular issue where the computer is experiencing sleep/wake failure (happens about once every 8-12 days). The report isn't showing ...
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1answer
41 views

iPhone 4s reboots on unlock

I have an Apple iPhone 4s running the last version of iOS that can be jailbroken(the one just before 9.1 I think). Each time I swipe to unlock, it hangs for a second while displaying the pin entry ...
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69 views

Fails to Reboot during installation of El Capitan upgrade

Downloaded El Capitan when it first became available. After downloading, I could not reboot to install the update. At some point, and I am not sure when, the update installed on it's own as my ...
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191 views

Mac won't reboot or shutdown via GUI any more

A few weeks ago, I don't know exactly when but definitely with or after the upgrade from 10.9 to 10.11 my Late 2013 iMac stopped being able to reboot or shutdown via the GUI. When I click a reboot ...
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1answer
119 views

Mac restarts again and again

I have a huge problem with my iMac. When I boot it, I hear the "start sound", I see the Apple icon and a charging circle. After 2-3 minutes the Mac reboots, black screen then the start sound and then ...
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1answer
17 views

MBP defaults to bootcamp

If I reboot my machine and don't do anything it always starts up windows, which I find really annoying because I almost never load bootcamp and it requires me to babysit the reboot. I'd like to set ...
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1answer
67 views

How can I troubleshoot apps which won't quit and force me to reboot?

I've been having this problem a lot and it's becoming extremely irritating. So, I force quit an app (mostly Chrome, Steam and uTorrent) that isn't responding and open it again (this is also the ...
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2answers
117 views

Safari loses web site “login” state after computer restarts

I have a problem with Safari losing my web site login state after a computer restart. For example, if I am logged in to Facebook or StackExchange the before a restart, then after the restart I will be ...
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34 views

Using Yosemite installer from iMac with new SSD for MBP, will it work?

The SSD that I installed myself about 1-2 years ago went psycho, and I had to connect it to my iMac for getting through and erasing everything on it. I remember that the whole switch was a bit ...
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196 views

MacBook Pro running OS X 10.6.8 “Snow Leopard” will not reboot past grey Apple logo screen

I have a Late-2006 Macbook Pro running 10.6.8 "Snow Leopard" (I know it's on borrowed time); I got the shut down screen and rebooted to no avail, stuck on grey Apple logo. It will not boot in safe ...
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100 views

MacBook keeps restarting when my external HD is plugged

This is a problem that happened a few days ago. Before this, I could use my external HD fine. I don't know why it keeps being restarted now. So it's definitely a hardware issue because it happens ...
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1answer
50 views

iPhone 4 on reboot loop

My iPhone shut down, and asked me to restore and update, which I think means that it's going to delete all my data, which I'm nervous I won't be able to get back. After that, I haven't been able ...
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1answer
90 views

Unable to boot (kernel panic - reboot cycle) after 10.10.4 upgrade

Macbook pro early 2011, after 10.10.4 upgrade does not boot then gives the standard "you have a problem" message, then panic message again etc. I've attached an image below: , After ⌘Command-R ...
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1answer
139 views

Shutdown cause -62

As it says in the topic. My machine spontaneously rebooted this morning and all the logs have to show is: Shutdown Cause: -62 Only searches only lead to incomplete or deprecated (pre-OSX) lists of ...
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79 views

Weird Yosemite Behaviour

I've got a new MacBook Air, no issues for last month or so. Recently I've noticed some weird behaviour in yosemite. For a start: These are my settings : Yet this is my login screen: Notice I ...
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178 views

Kernel panic related to DirtyJetsamMemoryLimit?

I've been having random crashes (freezes or kernel panics requiring hard reboots) but I can't seem to pin down the cause. Looking in Console.app on restart, the only common factor seems to be related ...
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767 views

How do I know a mac needs to restart?

Is there a way to figure out from a script whether a Mac needs to reboot? A file, the presence or contents of which I could monitor perhaps? I'm looking for an equivalent to the file ...
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1answer
1k views

How to know when phone was last rebooted?

Occasionally I get the message about TouchID needing my password after reboot. Problem is, I haven't been rebooting. So I'm concerned my phone is rebooting itself in my pocket without me knowing it. I ...
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1answer
127 views

My MBP will no longer shut down or restart

My Macbook Pro was purchased late 2013. I now have OS X 10.9.5 (13F34). All of my Apple drop down menu items have become dysfunctional. I consistently cannot shutdown or reboot. What can I do?
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1answer
314 views

Is it dangerous to interrupt the post-OS X update optimizing?

When I log in after every OS X update, I get a push notification saying that my computer is being optimized and that performance and battery life may be affected until it's complete. Is it dangerous ...
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1answer
3k views

How to find what cause Mac OS kernel panic?

For last times i have kernel panics at least once a day. Anyone have suggestions how i can find what cause issue and how to fix it? I have latest Yosemite updates installed. Here is latest Problem ...
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2answers
36 views

Disable instant reboot by crtl-cmd-power or bring up a confirmation or wait timer

Being a newbie to Mac I found it very strange that Ctrl+Cmd ⌘+Power instantly kicks my computer to reboot without even printing a warning of any sort. The problem is that sometimes I mix it up with ...
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192 views

System failed to reboot and stuck at gray screen

I have an early 2011 MBP that came with Snow Leopard. I have now upgraded it to Yosemite. Yesterday, when I tried restarting the computer it did not recover from gray screen (kernel panic?). I tried ...
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154 views

“Slow down” bootup until all devices are available

I'm using OS X as a Server, running Server.app 4.0 to provide email hosting/etc. Attached to this machine I have a PROMISE Pegasus R2 RAID drive mounted at /Volumes/RAID6-11TB, and I changed the ...
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88 views

Super slow browsing on rMBP until reboot

I've just experienced a couple of days of incredibly slow browsing (using Chrome mostly, but changing browser didn't help) on my home wi-fi. After trying many things like rebooting the router, ...
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463 views

“iCloud Keychain Was Reset” after every reboot

Everytime I reboot my mac (10.9.5), I get a notice that "iCloud Keychain Was Reset". I can set it up again without problems, but I shouldn't have to keep setting it up. What's going on?
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784 views

Youtube in Safari cause system crash

Regarding MacBook Pro early 2011: sound loop, black screen It happened again and it's the 5th time in one month. Everytime I play youtube videos on Safari only the screen just freeze and the fan gets ...
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1answer
143 views

How do I reboot my iMac, after I cleared a virus and the computer froze?

Ran an virus scan which detected a geneio virus, removed the virus and the computer froze. I only have the Apple icon a spinning wheel. How can I reboot?
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1answer
235 views

Why My Apple iPhone 5s Rebooted automatically?

I was just using my iPhone 5s and it was in charging mode, but suddenly it re-boot without any specific reason, I am lil worried about it, I am still in warranty period and will you expect me to go to ...
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1answer
843 views

My MacBook re-boots when going into sleep - tips for analyzing problems?

since a few days my 2010 MacBook Pro re-boots on a regular basis. I'm looking for tips on how to diagnose the cause of the problem. Usually my MacBook (running Mavericks) is sitting on my desk, ...
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249 views

Reboot Error during the installation of OS X Maverick

I have a Macbook pro late 2011, with Lion 10.7.5 and I was trying to update to Mavericks. After downloading it and the process of installation everything were fine, but during the reboot I get this ...
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Updates: Mavericks 10.9.2 + Critical Security Update → no reboot

Update On an iMac running Mavericks 10.9.0, I just selected within App Store the 2 last OS updates: Critical Security Update (version 1.0) OS X Update Combined (version 10.9.2) These 2 updates ...
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19k views

-1006F error message when trying to recover mac

my macbook pro crashed and i sent it for repairs.. so the guy installed a new hard drive but then sent it back with a screen having a flashing folder with a question mark.. so i looked at this page ...
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415 views

OSX Mavericks doesn't reboot/shutdown/logout from menubar

sudo reboot or sudo halt works when executed from terminal. But, Apple Logo -> Shutdown/Restart/Log Out User doesn't work. Strangely, Apple Logo -> Sleep works. I've executed bunch of defaults write ...
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288 views

Crashs of MBP 13 mid-2010 (MC375LL/A)

I am using a a MBP 13 mid-2010 (MC375LL/A) with the following characteristics MacBookPro 7,1 Intel Core 2 Duo 2.6GHz RAM: 8Gb (2x4Gb in replacement of the 2x2Gb) HDD: WD Blue 500Go 5400trs/min (in ...
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2answers
2k views

OSx Mavericks (10.9.1.) randomly restarts

After having updated my macbook pro (mid 2010) and having it run without problems for some month, it now started to randomly reboot when I'm working on something. Resetting the VRAM didn't help. Any ...
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1answer
278 views

How to pesistently configure a Macmini4,1 to boot after power failure?

I do have a Macmini4,1 (2010) and I want to use it as a server so it will always start even after a power failure. Please remind that I am running Ubuntu on it, not OS X. Still, based on what I ...
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1answer
154 views

MacBook Pro (Tiger): Get keyboard defaults to stick

I have a circa 2007 MacBook Pro with fully-patched Mac OS X Tiger installed. I recently plugged an OEM USB keyboard into the laptop after leaving my Mac keyboard at home one day. Now that I'm back ...
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1answer
897 views

Remote dual boot, how to select OS to boot

I'm installing Bootcamp ( Win7 64bit if that matters ) on my Mac Mini, since you need to pick the OS to start up while booting, how can I do this remotely? Example: VNC into OSX, reboot the machine, ...
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1answer
972 views

Reboot from the command line (stuck processes)

I started a remote reboot of my machine but a couple of stuck processes are hanging the reboot. login with SSH is still possible sudo reboot or sudo shutdown -r hang two processes are trying to exit ...
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1answer
296 views

Why do I need to reboot after updating Airport Utility to version 6.3.1?

Why do I need to reboot after updating Airport Utility to version 6.3.1? Is there some kind of serious kernel tweaks involved in Apple's new router tool? Since when does a robust UNIX operating ...
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3answers
2k views

How to find cause of repeated reboots?

I have been having issues with my mid-2009 Mac Pro ever since I installed Mountain Lion. First it was intermittent kernel panics; I did some research and found that this is an ML bug that's triggered ...
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1answer
126 views

Any way on God's green earth to disable resuming applications after a crash?

Using OS 10.6.8 Every month or two I'll have a hard crash on my MacBook Pro and I'll have to force reboot by holding down the power button. No big deal, I've been doing this on various macs since ...
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1k views

Time Machine Backup causes Macbook Pro to hang

My Macbook Pro has suddenly started acting pretty funky. I will be running Blender for a few minutes and then it will turn on the fans and they will start getting faster and faster. I checked the CPU ...
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1answer
1k views

Apps that were active won't launch after crash

im having a really strange problem here. My macbook air running mountain lion locked on me so i held the power button down to restart it. When it restarted, the OS offered to reopen the apps I had ...
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139k views

How can I restart an iPhone 4S with a broken lock button and frozen springboard?

My springboard has frozen and the lock button is broken (two months out of warranty and it's not classed as a hardware failure). How do I restart the phone given that I can't access any apps or ...
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1answer
551 views

Howto avoid autostart of iOS app?

I use an iOS app that autostarts whenever I reboot the phone. How can I disable that ?
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4k views

Jailbroken iPod touch stuck in boot

I jailbroke my iPod touch 4g running iOS 6.1 yesterday. I got SiriPort, but it kept crashing my iPod and booting into safe mode. I reinstalled it, and took it for a test run, and of course, it ...