Questions tagged [reboot]

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

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609 views

iMac data recovery - file icon with ? mark [duplicate]

My iMac went dead, and was trying to recover data from it by connecting Thunderbolt. The dead iMac's hard drive did not appear on the other Mac. As a next step, I was trying to reboot to use Disk ...
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1answer
822 views

Mac mini (Mid 2011) randomly reboots, but not while I'm using it

Very strange issue here. My Mid '11 Mac Mini (on OS X El Cap, 10.11.6) is randomly rebooting during the day and (mostly) at night when not in use. I will be up in the middle of the night getting some ...
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2answers
224 views

What takes place during an iPhone hard reset?

In response to an iPhone 7 freezing issue I'm having, it was suggested to try a hard reset (holding power + volume down for 10 seconds for iPhone 7 or holding power + home on older iPhones). This ...
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3answers
12k views

Rebooting machine with macOS Sierra takes very long time

Since I upgraded my Retina MacBook Pro with macOS Sierra GM (16A319), rebooting the computer takes 20-30 minutes. I select Restart... from the apple menu, everything logs out, then the Mac hangs on a ...
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1answer
413 views

Getting error code -128 on a late-2015 iMac [duplicate]

Late 2015 iMac is rebooting on its own. Only Finder running, OSX 10.11.6. (2) 8GB RAM sticks. Got to catch it in the act today. After reboot I find kernel: Previous shutdown cause: -128 That doesn't ...
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1answer
352 views

My iMac reboots to the login screen in the middle of the night, after enabling FileVault

I have a 5K iMac, late 2015, running El Capitan. Two days ago, I enabled FileFault. After that, when I wake up, I find that the machine has rebooted to the login screen, showing me icons for all ...
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0answers
870 views

MacBook Pro 13" is restarting after RAM upgrade

I have upgraded my MBP from 4GB (2x2GB) to 16GB (2x8GB) SO-DIMMs. After upgrading it keeps restarting continuously. Here is the new RAM detail: Kingston Mac Memory 8GB DDR3L-1600(PC3-12800) SO-DIMM 1....
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1answer
354 views

Persistant phantom volume mount points, how to prevent?

Every time I reboot my Mac a mount point for a drive I don't even have connected is recreated in my /Volumes/ dir. I can delete it, but next time I reboot it comes back. How can I find out what is ...
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1answer
110 views

Dock doesn't disappear before reboot

Every time when I'm trying to reboot my mac(macbook pro retina|el capitan), everything disappear except dock so the process stops and thats how my desktop looks:
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1answer
99 views

Apple Watch face blank

I mistakenly unpaired my Apple Watch from my iPhone. 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 and I have been trying to ...
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1answer
57 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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0answers
574 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
106 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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363 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
5k 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
19 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
185 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
765 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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1answer
79 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
177 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
491 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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124 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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0answers
2k 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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1answer
3k 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 /var/run/reboot-...
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1answer
15k 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
187 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
484 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
10k 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
64 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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3answers
472 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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1answer
690 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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0answers
586 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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1answer
1k 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
202 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
376 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
1k 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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0answers
318 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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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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5answers
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-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
480 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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0answers
437 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
699 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
173 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
2k 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
3k 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
314 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
8k 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
139 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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1answer
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 ...