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Questions tagged [startup]

Usually referring to the startup process of a device or computer from an initial "cold" state rather than sleep or hibernation.

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Failure To Boot/Verify Disk

My (mid 2011) MacBook Air’s been working perfectly fine, but today decided to 1) crash 2) throw me the “startup disk not found” error. I know it’s an old computer, but still I run disk verification ...
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disk1s1 device is write locked

I can not boot my iMac (20" Mid 2007) running OS X 10.7.5 When I am in Single User Mode I can use fsck and when trying ti sbin/mount -uw / it says device is write locked. I am really stuck. I wanted ...
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24 views

MacBook Pro 2011 with fuzzy screen won’t boot

I can’t boot into Safe Mode. Also tried recovery mode, but it won’t load. Tried internet recovery mode - no good. ☹️ I'm unsure if this is related to the fuzzy screen (see image above). I've also ...
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2answers
45 views

“Sign In to iMessage” popup randomly

I get a random popup from an unknown program asking for my password. What is this? how do I stop it. It doesn't show in the doc. Macs don't even have iMessage so this makes zero sense. I don't have an ...
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1answer
31 views

MacBook startup sound loop

I have a mid 2012 MacBook Air and it is looping on startup sound, stuck on white screen. I have tried: formatting the SSD and installing the latest version of macOS Mojave resetting NVRAM and SMC ...
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2answers
23 views

MacBook booting to black screen

I am currently unable to boot my Late 2013 MacBook Pro. When I attempt to boot, the backlight comes on, but there is no image on the screen. When I try to boot into Safe Mode (by holding Shift), ...
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1answer
26 views

startup items folder

MAC PRO 1,1 it says: Insecure Startup items folder detected .... Items in startupitems folder have not been started because the folder does not have the proper security settings my question:I ...
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1answer
29 views

macOS counterpart of Windows startup batch file [duplicate]

My friend pranked me by creating a batch file which opens a YouTube video and added it to the startup folder, so that the batch file launches every time I log in. This is what he wrote in the batch ...
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233 views

Mid 2015 retina MacBook Pro: Startup slow after SSD Upgrade

I've recently upgraded my Mid 2015 retina MacBook Pro's original 500 GB SSD to a 2 TB Samsung EVO 970 NVMe M.2 coupled with a recent model Sintech SSD adaptor. I am running macOS High Sierra 10.13.6. ...
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1answer
389 views

My external boot volume won't startup all my Macs when it should

Because of the mobility of my work I decided to create a boot volume on an external USB-C SSD so that I can run my user environment on a number of Macs (on an iMac Pro (2017) while at work, on a 15" ...
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14 views

Send an email message via script upon startup, before user login

Is there any way to automatically send an email message (as a notification that my server box has rebooted, usually due to power failure) to myself upon system startup, before user login? I am not ...
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1answer
160 views

Spotify automatic startup mystery [duplicate]

Trying to get rid of Spotify's startup at login time I found an interesting behavior: while its plists are not present in any of the known locations such as Library/LaunchAgents and Library/...
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Mac startup drive vanished after hard reset

The machine in question is a 2015 model 5K iMac running Mojave. It has a fusion drive that had a partition for OS X and a partition for Bootcamp running Windows 7. I went to restart and it seemed to ...
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1answer
18 views

Can't update boot security on new Macbook Pro

I am trying to boot from an external device and it is asking for an administrator password. The machine is new and didn't have a password so I created an admin password and it still won't allow me to ...
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0answers
69 views

I turned my iMac on, but I only see a grey blinking question mark folder

I bought a 2011 21.5" iMac in a garage sale. I pressed Command + R. Once I'm in the macOS Utility folder, I don't see the Macintosh HD. Now, I went back to macOS Utility and tried to re-install macOS ...
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2answers
169 views

Update to 10.14.1 on Mac Pro 5.1 results in black screen

I tried to update my Mac Pro 5.1 with the delta updater to 10.14.1 from 10.14. I have a Sapphire RX 580 installed. After some minutes I saw he load screen but after that the screen turned black. I ...
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0answers
23 views

MacBook keyboard doesn't respond during startup

I have had this problem for quite some time. my MacBook pro Retina early 2015 takes forever to start up.duribg startup the keyboard seems to be unresponsive to eg.cmd+alt+p+r or any other working key ...
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22 views

How can I delete all network users on startup or shutdown?

I want to run this script before any student logs into the computers daily. #!/bin/sh mv /Users/admin /admin wait $pid mv /Users/Shared /Shared wait $pid rm -rf /Users/* wait $pid mv /admin /...
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182 views

Change icons order in Startup Disk MacOS Mojave

Yesterday I installed Mojave on my MacBookPro 13'' 2015. I had Sierra before. I have 2 partitions: Macintosh and Bootcamp (Windows). Every time I went to Startup Disk or in Startup Manager (after ...
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1answer
27 views

Every time I turn on macbook pro I get menu for choosing startup disk

Every time when I turn on my macbook pro mid 2014 I have to choose my startup disk to continue with booting. It behaves as if I am holding the option key... However, the right option key doesnt work ...
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1answer
8k views

My Mac repeatedly beeps three times on startup. What does this mean?

When I try to boot my Mac I get nothing but strange beeps. They beep as follows: BEEP BEEP BEEP [3 second pause] BEEP BEEP BEEP [3 second pause] and it continues until I power off. So far, I have: ...
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0answers
149 views

Mac not starting or going into recovery mode

My Mac (mid 2011 21.5" iMac running mac OS High Sierra 10.13.6) suddenly froze while watching a video and restarted. It now keeps on restarting. Soon thereafter, my wireless keyboard stopped working, ...
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1answer
33 views

Recovery mode not loading on MacBook (Late 2008)

For some reason, I'm not able to load recovery mode utilities on my late 2008 MacBook (running Mavericks). I've referenced the technical steps here but none of the startup keyboard sequences appear ...
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1answer
32 views

What is normal for startup chime till Apple logo shows?

My late 2015 iMac recently started taking a very long time to go from the startup chime till the Apple logo appears - about 2.5 minutes. Between the chime and the logo, the screen was black. After ...
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2answers
351 views

How to start Internet Recovery Mode of El Capitan with multiple OS installed?

Thank you for your time. Here is my problem: A) Goal Start into Mac OS X El Capitan internet recovery mode and temporarily disable System Integrity Protection (SIP) to use (X11 functions of) ...
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Editing Startup Manager items

Recently I've restored macOS from Time machine copy. When I boot my Mac using Startup Manager, it shows me 3 options: boot macOS, Windows and Time Machine backup (which I don't need to see anymore). ...
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3answers
351 views

Remove Startup Arduino CreateAgent on High Sierra

Recently this application was installed on my Mac. Now it runs every startup. How can I stop it ? Tries to solve: 1) search in Login Item of current user - Not found. 2) Not found in /Library/...
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1answer
557 views

Not able to select a disk to reinstall OS in safe mode

I have iMac A1418 with High Sierra on it. I had to erase entire Macintosh HD disk hoping to reinstall OS on a ‘clean’ drive. Unfortunately I’m not able to accomplish this as when I select “Reinstall ...
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2answers
2k views

MacBook Air won't power on

My MacBook Air won't turn on. I plugged in the charger and it says it's charging. When I turn it on, the light instantly turns green for a few seconds, and then it goes to amber. What's going on? I ...
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1answer
23 views

How do you create a bootable drive on an external disk?

I have a MacPro that i want to keep on Mountain Lion, but I'd like to be able to startup off of the latest MacOS. Is there a way to create a bootable drive that uses High Sierra?
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126 views

Macbook keeps restarting during boot (+ log)

I have a Macbook 2011 that suddenly crashed and won't start afterwards. It fails approximately about 55% into the loading bar, seemingly always in the same place. It won't load into safe mode either, ...
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1answer
384 views

How to prevent app from auto starting

I know there are Login Items under Users & Groups and /Library/LaunchAgents and /Library/LaunchDaemons under Library, System/Library and Users/FooUser/Library. And then there's right click on Dock ...
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1answer
50 views

Macbook startup problem. Once started is extremely slow

I have a serious problem with my Macbook pro retina 13" early 2015. Some days ago, after a normal shutdown, the Macbook did not startup anymore. It emitted the short start sound and it went back to ...
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31 views

Set the mode for next boot from the terminal

I'd like to be able to boot into the recovery mode the next time the machine boots not by using the start up key presses. I'm already logged in in normal user mode - can I set this in the terminal? ...
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32 views

How can I prevent macOS from restoring all applications after a hard reboot? [duplicate]

At least in macOS 10.13, if my iMac reboots due to a kernel panic or when a software update requires a reboot, the system restarts the applications that were running immediately before the shutdown ...
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880 views

iMac 2008 Flashing Question Mark on Startup (Tried almost everything)

I recently purchased an iMac from a local Goodwill. After talking to Apple support I was able to find out that this is a 2008 all-in-one model. Additionally, I asked for help with the "flashing ...
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2answers
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Can I simply make a partition on my Mac, install an OS to it, and boot from it via Startup Manner?

On my Mac, can I simply create a new partition in Disk Utility, install an Operating System to it, such Arch Linux, and then boot from it by holding alt/option during boot (Startup Manager)?
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Why won't launchctl automatically load my plist entries?

I have put several plist entries in /Library/LaunchDaemons all configured to run at load. However, after booting, none of them load up automatically. Every other script in this directory loads ...
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2answers
3k views

Make sysctl changes at startup

I'd like to change the default smb settings at startup to remove timeouts. I have the following script; #!/bin/sh sysctl net.smb.fs.kern_deadtimer=0 sysctl net.smb.fs.kern_hard_deadtimer=0 sysctl ...
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1answer
577 views

iMac doesn‘t start up

My iMac doesn’t start up. The loading bar doesn’t fill up and then, after 10 minutes or so, it shuts down. I tried to get in the recovery mode, but there is the Macintosh HD drive grey and it says „...
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1answer
4k views

Can’t choose startup disk after wiping hard drive from OSX Utilities

I’m helping someone with their old laptop (17”, mid-2009, if that matters). I restarted with cmdR to load OSX Utilities, and I used Disk Utility to wipe Macintosh HD, overwriting it three times and ...
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482 views

Disk can't be used as startup disk (Install macOS High Sierra app)

The title is more or less explaining the question, but reason why I made a new post instead of just using an existing one is that I am in a particular kind of situation. Basically I am using my ...
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2answers
33 views

Preventing a specific application from relaunching at startup?

When I reboot my mac, I have the "Reopen windows when logging back in" option checked, and for most applications it works fine. However, there's a few applications I use that behave very badly at ...
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1answer
726 views

Trouble mounting High Sierra start up disk from OS X 10.9

I have a Mac mini late 2012/2.5 GHz Intel Core i5, with 2 disks, one SSD, and a HDD. The SSD has the most recent High Sierra and the second drive OS X 10.9.5. After many attempts to force High ...
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1answer
1k views

Single user mode comes up with wrong boot disk

For some reason Single User Mode is now booting to something other than my usual HD partition: The disk has no /Users directory; fsck -fy takes only 1.7sec; df shows the root device to have only 3.9M ...
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1answer
289 views

Shortcut to boot into different startup disk

I often boot into an external startup disk. In order to do this, I need to access the Startup Manager by holding alt/option while rebooting and then selecting the disk I want to boot up into. Since ...
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0answers
22 views

Folder/Finder Startup Items: How not to open window after logon?

I'm using El Capitan at the moment, but I've had this "problem" for a long time - it's more an inconvenience, really. I have a number of network volumes in my Startup Items because I want them to be ...
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1answer
127 views

if the startup disk is copied to external drive, can that external drive be used as a startup disk?

If the startup disk is copied in its entirety to an external drive, can that external drive then be used as a startup disk?
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Automatically organize multiple desktops

I want to have multiple desktops created in a specific order on the startup of my system. I want two apps (Safari and iTunes) to be full screen on each desktop on startup. I know about "Options > Open ...
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1answer
1k views

What affects the colour of the Startup Screen?

I've seen Macs startup with a white [very pale grey] screen & some with a black screen. random pics from interweb... What differentiates which it will be? My own machines here - 2 old Mac ...