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

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Automatic and Abnormal reboot after plugging an usb device

I have a Macbook pro (mid 2009, OSx 10.11.4). It has been already few days that I have the same problem: when I plug an Arduino into one of my two usb ports (no matter which one), the system crashes ...
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1answer
16 views

Apple Watch face blank

I mistakenly upaired my Apple Watch from my phone, now the voice over on my watch is on, screen curtain is on , but my screen is blank I don't know which button to press, I have been trying to pair it ...
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1answer
12 views

Duplicate Volumes folders on each reboot

Really frustrated trying to solve this, the only thing I played with was /etc/fstab when trying to mount & write to a NTFS external drive. Since then everytime I reboot my Volumes (besides the OSX ...
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21 views

iMac late 2011 (Yosemite) rebooting several times

My iMac suddenly turned off, and when I tried to turn it back on, it started to reboot over and over while trying to boot the OS. Is there a known bug with Yosemite? It has been working perfectly for ...
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4answers
7k views

How to force a Mac to restart without pressing the power key?

The Finder was not responding, so I control+click'd the Finder icon on the Dock and chose Relaunch… except that it didn't relaunch. Activity Monitor happened to be visible and I could see that it ...
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43 views

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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1answer
48k views

How to reset MacBook Air that is booted but shows no screen?

I was using my MacBook air after returning home. The network was down, so I put it down, closed the lid, and went to reboot the router. Upon returning to my MacBook Air, opening the lid, nothing ...
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71 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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101 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
44 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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100 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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1answer
197 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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3answers
45k views

How to perform hard / cold reboot of iPhone or iPad?

I understand that when I press and release the power button on the top of my iPhone or iPad, it stays on but turns off the screen. Whereas if I press and hold the power button, a "slide to turn off" ...
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0answers
236 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
175 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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13answers
145k 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
85 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
164 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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0answers
221 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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133 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
52 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
107 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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88 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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202 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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3answers
192 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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4answers
22k 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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1answer
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 ...
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1answer
908 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
2k 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
135 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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37 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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1answer
4k 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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1answer
333 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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481 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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196 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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1answer
103 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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1answer
890 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
2k views

Rebooting a headless Mac Mini

I have an old Mac Mini on which I installed Ubuntu to be used as a test server. I completely formatted the hard disk before installing ubuntu, installation went fine and everything is working; so far ...
2
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0answers
258 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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1answer
148 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?
2
votes
1answer
252 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
889 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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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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0answers
5k views

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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1answer
425 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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309 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
8k views

How can I make Mac OS X run a program before shutting down?

I am trying to get Mac OS X to save all my VirtualBox VMs when it reboots. I already have a script that does this, but I need OS X to run this script automatically before a reboot. When Mac OS X ...
2
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1answer
303 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 ...