Questions tagged [boot]

Questions about booting, the process of starting a computer and putting it into a state of readiness for operation.

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Set default boot disk to USB on macmini with T2 chip

I need to setup boot always from USB stick. I can boot it from USB by pressing Alt and selecting specific source. Buy how to do it permanently? Is is possible?
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How do I mount an SSD I got from an old Macbook?

I ripped a perfectly fine SSD out of a Macbook with a broken display. So far, all my attempts to access the file system on the SSD have failed. I've tried to put in a nearly identical Macbook. This ...
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668 views

How to delete macOS Installer boot

I tried to install a macOS High Sierra update, but I got the error "An error occurred installing macOS" and thus I decided to erase the Installer.app and dmg on my drive. Now every time I close my Mac ...
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Older Mac (2012) Fails to Boot, any ideas?

Guys I'm running out of steam here... how do I copy files from a hard drive in recovery mode to an external hard drive on an older mac. First few things I did: boot into recovery mode and run the ...
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Moved home-folder to external drive - after booting up Apps sometimes won't load

Bid on an 2018 Mac Mini on Ebay, when I realized that this impulse buy is an error (128GB internal drive) it was already too late. Solved that problem by moving my Home-Folder to an external ...
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Replaced SSD won't boot

I have cloned the HDD from an old MBP (Early 2011) to a Kingston A400 SSD. When booting from USB it all works fine, however once installed internally when booting it shows a no entry sign 🚫 (I assume ...
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177 views

MacBook Pro 2015 - New SSD, can't install macOS

I installed a 500GB Samsung 970 Evo Plus NVMe M.2 into my MacBook Pro 13" 2015 (128GB). I followed instructions in a youtube video. (Boot-Stick created, case opened, battery disconnected, SSD removed,...
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how to stop krisp.ai app from starting on boot

The Krisp app (a noise filter for skype calls) starts automatically on boot, and even if I remove it from the list of startup items, I keep finding it there. This is annoying and intrusive. I like ...
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iMac macOS High Sierra 10.13.6 white/grey screen and progress bar

I no longer have access to my iMac since 2019-03-26, the last date that it worked normally. I restarted my iMac on 2019-03-26 and since then it does not want to display the desktop anymore. It shows ...
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2k views

How to create a Windows 10 bootable USB on a Mac for PC without Bootcamp, when install.wim is too large

My Boot Camp assistant seems to be having problems (first I get not enough space, 40 GB, etc.) which I fixed by making a partition using Disk Utility, but then I didn't get an option that others seem ...
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can't boot on win10 without alt (option)

on an air macbook air 2017, I deleted OSX and installed only Windows 10 from a usb cd drive. Everytime I boot the computer, I have to push on ALT to select the only one item: Windows. Otherwise I get ...
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Is there a way to power up a 2017 MacBook Pro (non Touch Bar) with a bad keyboard?

A friend of mine has asked me to take a look and see if I can bring their 2017 MacBook Pro (13", non Touch Bar) back to life. Apparently the cause of death was that a glass of wine was spilled on the ...
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1answer
586 views

Mac asking for username and password on starting up

I am running MacOS High Sierra on a Macbook air and this is the screen that usually comes up on booting. The mac starts up after typing the right password. From yesterday after restarting, after ...
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123 views

How can I boot back to Mojave from Boot Camp 6 with password-locked boot manager?

The situation is as follows: I have a MacBook Air 13" (early 2015), which was corporate but the employer allowed me to buy it when I was changing jobs. I have installed Windows 10 from an official ...
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43 views

Macbook pro (mid-2012) startup chime delayed (slow booting) after HDD to SSD conversion

I recently upgraded HDD to SSD on my mid-2012 macbook pro. After the SSD upgrade, the startup chime is delayed, causing slow booting of my mac. Any potential pointers ?
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Question Folder but no Startup Options

I came home to my Mac Book Pro (late 2009) showing me the blinking question mark folder. I followed all the instructions available online (Reset NVRAM, SMC) but neither boot screen (pressing Alt ...
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1answer
50 views

No install location available in Mac Internet Recovery

I tried to start my Mac & a folder with a question mark appeared. I researched on Google and discovered it was a problem with the Boot partition. I saw how to fix it. I used Opt ⌥ while booting ...
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159 views

Can’t Boot My 10.14.3 Mac Pro Into Internal Recovery Mode

< 3.5 GHz, 6-Core Mac Pro (MacPro6,1) with 16GB RAM and D700 GPUs, running macOS 10.14.3 > Greetings, folks! I am baffled that I cannot boot my Mac into Recovery Mode after a clean install of 10....
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Reinstall macOS after having Linux

I installed Ubuntu on a 2010 Macbook, just to try it out. I now want to go back to either Sierra o High Sierra. I created Install UBS sticks and I tried to boot from them by holding the Option Key. ...
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99 views

How to use a kext that has just the info.plist changed without codesign or SIP disabled?

Similar to How do I edit an info.plist file inside of a kext file? There is a need to change how a kext works. (Specifically /System/Library/Extensions/AMD6000Controller.kext/Contents/Info.plist ...
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1answer
41 views

Can I install dual-boot OS on the external USB drive?

I have a MF839 MacBook with Mojave and I want to install Linux as my dual-boot system on the external USB drive. I have one USB with 8GB and one with 64GB. On 8GB I will burn my .iso file with Debian-...
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1answer
98 views

Adding functionality to macOS pre-boot process

Is anyone familiar with adding functionality to the macOS pre-boot process? I'm trying to supplement FileVault's functionality so that it can integrate with a user directory service, which isn't ...
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Macbook Pro (encrypted disk) hangs during login after some “low hdd space near-crash”

My macbook almost crashed when it was low on HDD space. I emptied about 10% of HDD, but still there were some glitches (some apps couldn't start up and so on), so I restarted the laptop. Restart didn'...
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116 views

Creating a bootable USB

I am trying to restore a dead windows machine, all I have access to currently is an old mac. I am trying to accomplish this by downloading the Win 10 1809 iso and creating a bootable USB stick with it....
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What should I do about outdated BootCache playlists?

In /private/var/db/BootCaches there are old 'bootcache playlists' (not clear what these exactly are as they also have some sort of user component apparently) for Coriolis Systems (which in the past ...
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1answer
132 views

I'm Unable to Boot into Mac OS Partition, partition type FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF [duplicate]

I've seen similar answered questions like this. I'm unable to boot into my MacOS partition. Long story short, I had Windows BootCamp, removed it and then later installed Ubuntu Linux, then tried to ...
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1answer
136 views

Fix Windows after Ubuntu installation

I've followed closely this step-by-step guide: https://apple.stackexchange.com/a/257275/322989 After that my Ubuntu 16.04 LTS and Mac installation work perfectly fine. But my Windows 10 does not. ...
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1answer
27 views

iCloud Disassociation for a Mac Computer

I had a Mid-2012 MacBook Pro that recently stopped booting. I narrowed this down based on troubleshooting of the boot device to likely the SATA/hard drive connector/cable no longer working for ...
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457 views

Mac OS running slow after Mojave install and disk appears to be corrupt

I currently have upgrade OS Mojave on my laptop, imac at home and imac at work. Don't ask me why I did all at once, other than not thinking straight. After the install performance has dropped on all ...
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1answer
116 views

Repeated MacBook Pro 2012 HDD Cable Failures

Two weeks ago, a friend's mid-2012 MacBook Pro gave the dreaded question mark folder upon attempting to wake from sleep. I pulled the drive and checked it (backed up, SMART status passed, 70+ MBps ...
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1answer
202 views

Update screwing with encrypted disk or keep using windows boot?

On my 2011 macbook air i have high sierra installed. It attempted and at some point completed an update security update 2010-001 to version 10.13.6 (not sure if i had automatic updates on or not). ...
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Booting into macOS installer; possibly stuck

I'm trying to boot into a macOS Sierra installer that I made today. For the last about 20% of the progress bar, it was booting extremely slowly. Now, the progress bar has been stuck for the last ~20 ...
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2k views

After replaced SSD (970 EVO) on MBP mid 2015, Mac didn't start after a workday but after changed back to orig SSD?

I have an Macbook Pro Mid 2015 with an 512GB SSD. Because I alway ran out of storage I wanted to upgrade to an Samsung 970 EVO Plus 1TB. For reasons I don't know I couldn't clone the system to that ...
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1answer
38 views

Macbook turns off after a minute – not in safe mode, but in all recovery modes

Problem My friend's Macbook Pro Retina Early 2015 turns off abruptly to a black screen (as far as I can tell without logs) after booting. Takes ca. 1 minute. The last thing he remembers doing ...
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Macbook Pro mid-2015 Mojave: Screen turns black for a while after logging in

I don't know is it okay or not but after I typed my password and the apple logo appears, suddenly my screen turn black for a while and after a few seconds it goes back to finish its loading bar ...
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31 views

Installed a new SSD into MackBook. Flashing folder icon shown at startup

A1342 New SSD. Flashing folder icon on start up, no key commands working I’ve just fitted my MacBook A1342 with a 850 Evo SSD. The recovery mode keys and others will not work. I have managed to rest ...
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1k views

How can I create a bootable windows 10 usb installer on Mojave?

Boot Camp Assistant no longer allows to do this dd shouldn't be used for bootable sticks (see here) Using unetbootbin I can only write on FAT32 formatted USB, but that does not work (see here) How ...
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98 views

Dual CPU Mac Pro 4,1->5,1 won't boot with more than one RAM stick per processor

I was working on my dual CPU Mac Pro 4,1 (upgraded to 5,1), having removed the CPU tray to access the board behind it, and subsequently the machine was non-bootable. Following the process of building ...
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1answer
148 views

Disable Apple FaceTime Camera kernel module

One day my FaceTime Camera stopped working, so I decided to reboot my MacBook. After waiting hours, MacOS didn't complete the boot process. In verbose mode ⌘+V, I can see initialization hangs with ...
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396 views

MacBook Pro won't boot from USB installer or go into recovery. Tried everything

Hi I have a MacBook Pro (15-inch, Mid 2012) that won't boot using any method. Around 6 months ago, the mac started making loud scratching sounds, but they stopped after a day or so. However, a few ...
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310 views

External hard drive APFS marked as read only, after repair does not mount at boot time

I have an external 2TB hard drive formatted with APFS connected to my 2017 iMac 27" running Mojave/10.14. Until yesterday, this external disk would be mounted during boot time and everything worked ...
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Why my Mac Mini doesn't boot with external HDD attached?

Ext HDD is 3,5" 4TB WD RED (exFAT) in USB 2.0 box with external power supply (220v) When I restart my Mac Mini (late 2012, MacOS 10.14) in 90% the boot will end on black screen (no apple loading logo,...
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202 views

macbook mid 2010 white 13.3" running high sierra has half chance to boot

I have "Macbook (13-inch, Mid 2010)" it has white plastic case with 4GB 1067MHz DDR3 RAM and NVIDIA Geforce 320M 256MB. Model Identifier: MacBook 7,1 Boot ROM Version: MB71.003F.B00.18022149 SMC ...
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547 views

Resetting screen brightness setting in touchbar MacBook Pro during boot

Due to a series of unfortunate events, my 2018 15” MacBook Pro found itself out of battery and with screen brightness set to zero. I should also mention that I have FileVault full disk encryption ...
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34 views

How to tell the difference between SingleUser and SingleUserRecovery mode on screen?

SingleUserRecovery mode is usually achieved by holding down Cmdr s on start up. This boots the Mac into the SingleUser mode of the Recovery partition. This is either handy o needed for things like ...
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37 views

Skipping battery level screen when powering on MacBook Pro with Touch ID button

My MacBook Pro used to turn on automatically when I opened the lid. I didnt like that so I disabled that feature. Now I can manually turn on the macbook but it requires a couple button presses and a ...
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1answer
193 views

Can’t get MacBook a1181 to boot

I have two MacBook a1181’s, a black one and a white one. I bought the first one (the black one) a while ago and haven’t had any problems with it. I installed Devuan on it and everything was good. ...
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56 views

Boot macOS on Lenovo machine from hard drive of MacBook pro that is dead

I have a Lenovo system with Ubuntu installed on it. What I'm trying to do is use the Lenovo system to boot macOS that was installed on a hard drive of a MacBook Pro that died. I saw several posts ...
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163 views

MacBook Pro Internal Hard Drive dead?

Not too long ago, I tried to update my MacBook Pro to the newest OS (Mojave). I downloaded the updater etc. and started updating my software. I didn't mind, so I just let it update for itself. I came ...
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272 views

Mac won't boot without Startup Manager

So I have iMac 5k Late 2014 with macOS Mojave. I also have installed bootcamp Windows 10 although I'm not sure if this is relevant. For a while now I have been experiencing a peculiar issue with start ...