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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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Mac Internal Drive Uninitialized | Macbook Pro 13 (mid 2010)

Bit of background - the whole problem began with the mac being really slow and unresponsive. I thought it might be a good idea to wipe everything clean, and reinstall a fresh copy of High Sierra. So, ...
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25 views

2009 macbook pro crashes during boot + command D and boot + command S

I have a 2009 macbook pro. It started random crashes it happen before i checked battery and hdd connections. Then it started crashing on boot. I did the boot + command + D and the boot + command + S ...
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Roccat Kone Pure SE mouse buttons not working on macOS Mojave 10.14.2

Running macOS Mojave 10.14.2, Macbook Pro 2018: I am having issues with my Roccat Kone Pure SE mouse (new mouse), the mouse buttons are non functional on bootup and from sleep. The only way I can fix ...
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43 views

Do I have enough evidence to conclude that my 2017 MacBook Air's problem is in the logic board? [duplicate]

I'm trying to revive a MacBook Air 2017 that suffered a liquid spill (diet Crystal Light on the keyboard). After a week of drying, open, in an aggressively dehumidified room, it started up and behaved ...
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0answers
20 views

iMac cannot boot from an external SSD but MacBook can

I have recently bought an SSD (Crucial MX500) and an USB enclosure (EE25-F6B). I wanted to use it instead of my internal drive in iMac(Late 2012). I tried installing macOS Mojave on it from a usb ...
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1answer
15 views

"No bootable device…” after unplanned empty battery shutdown

The macbook pro has suddenly shutdown (battery went out) while I am doing bootcamp to windows besides macOS. Now there's a big black and white message No bootable device... I can't do anything, I ...
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1answer
42 views

Boot windows bios from second internal drive MBP Mid 2012

I'm facing a little big problem concerning my windows partition: State of the art is, that I removed my CD-Drive and replaced it with a second SSD. Therefore I thought of moving windows 10 to one disk ...
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13 views

iMac doesn't see external bootable SSD on startup

I have an iMac 2013 with HDD and I recently upgraded it with extarnal SSD connected via Thunderbolt. It works pretty well but sometimes when I turn my iMac on, it shows a black screen with text like "...
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1answer
339 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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1answer
21 views

booting linux from external drive on mac

I had Linux installed on USB using pure efi boot. I had been using this tutorial: https://medium.com/@mmiglier/ubuntu-installation-on-usb-stick-with-pure-efi-boot-mac-compatible-469ad33645c9. ...
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1answer
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Does an apple remote wipe leave a bootable OS if the firmware password is set?

My friend has a mac which has some malware on it, we want to wipe the whole disk and create a fresh install. However the firmware password is set and she has no idea what it is. The apple store ...
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1answer
45 views

Rename EFI Boot Partition “EFI Boot”

I am trying to rename my Windows / Boot Camp partition from "EFI Boot" to "Boot Camp" or "Windows". But I do not figure out where to rename. I tried bless command on the NTFS Volume, I tried ...
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3answers
35 views

Why can't newer Mac hardware boot DBAN?

I have a DBAN CD )used with an external optical drive) which I have used in the past on multiple old Macs. I tried to use it on a 2018 Macbook Pro and DBAN could not be booted. Specifically, I tried ...
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1answer
61 views

Need help making Windows bootable after installing Linux

I used this questions's answer to install Linux(I installed Mint, however, not Ubuntu) and followed along. I do believe I didn't follow the answer properly, as I still have a placeholder partition ...
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0answers
10 views

Hide users at boot when Full Disk Encryption is enabled

When FDE is disabled, it's possible to show a simple username/password prompt at login. How does one disable user selection to show a username/password login screen when FDE is enabled?
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APFS Container corrupt after resizing Boot Camp partition from Windows

I have a bad problem. I shrunk my APFS volume from 850 GB to 750 GB so that I can expand my NTFS Boot Camp Volume from 150 GB to 250 GB. After shrinking everything worked fine. Then I started Boot ...
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0answers
20 views

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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2answers
26 views

Running Windows 10 from bootable DVD without installing on hard disk?

I am trying to boot from a Windows 10 DVD, but it says something about installing it. I don't want to replace my existing OS with Windows 10. I just want to use some software with it. How do I do ...
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0answers
21 views

Boot up directs me to utility

My iMac boots in utility mode and once comand-q is pressed there is only the base OS to choose. How can I resolve this issue? Ok sorry, when I boot up my iMac the utility screen comes on after the ...
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0answers
9 views

Is it possible to recreate the recovery partition in single user mode?

I was building a Franken MacBook Pro ~2012 from some old computer parts I had lying around. It is an old body that had HD issues, an HD from a MAC that was won't turn on due to a bad power button ...
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17 views

Is there a boot utility like systemd-analyze for macOS?

Is there a boot utility like systemd-analyze for macOS? Something about the installed antivirus software is slowing down the boot process.
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0answers
24 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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1answer
11 views

MacBookPro 2015 not booting from a copy of the disk of my old MacBookPro mid 2012

I have a MacBookPro 13'' mid 2012, 2.9 GHz, which I have given to my partner, as I bought a second-hand MacBook Pro 2015 (beginning of 2015, 3.1 Ghz Intel core i7) Before giving the MBP mid 2012 to ...
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1answer
17 views

need help I screwed my macbook so bad thiere is one drive and no partitions, please read below [duplicate]

So...I somehow messed up my macbook Pro model 1502 raetina 13" Late 2013, core i5, 4GB. I wanted to clean install High Sierra. Long story short I now have a macbook with one, yes one, there is no ...
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1answer
35 views

How to properly remove a Linux partition without messing up your drive?

I know this seems like an beginner / dumb question, since an obvious answer would be: Open Disk Utility Remove Linux partition However it seems that it might not be that easy, and that following ...
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0answers
98 views

Is there any way to prevent a MacBook Air (2018) from starting up when the lid is open or a key is pressed or the trackpad is touched?

So, I am a happy (genuinely, not sarcastic!) owner of a new MacBook Air (2018). It works great! It’s running macOS 10.14.1 (Mojave). But it seems to do something that owners of 2016 to 2018 MacBook ...
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1answer
16 views

How can I isolate what is causing the temporary “stall” during startup?

As I see the progress bar on my MacBook Pro mid-2015 move from left to right, soon after it gets past the halfway point, it starts to slow down and eventually stops temporarily, at about the time the ...
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0answers
26 views

Boot OS X Mavericks USB installer on 2015 Macbook Air

I want to attempt to install macOS X Mavericks on a 2015 Macbook Air. This machine originally shipped with Yosemite, so I am aware that I may not have all the necessary drivers. However, I should be ...
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2answers
138 views

Mac running macOS Mojave doesn't boot

I've updated to macOS Mojave weeks ago, and everything was working very well. However, yesterday my iMac (2014, I think?) didn't even boot, nor does it today. The verbose mode shows this (I know I ...
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1answer
28 views

Disable boot chime without macOS installed

I would like to disable the boot/power-on chime on a late 2009 MacBook. However, my system does not have macOS installed at all. Is there a way to do this without reinstalling macOS? The machine has ...
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1answer
207 views

Restarting in safe mode without using the shift key under Mojave

I'm trying to restart my MBP (now running Mojave) in safe mode, and for whatever reason holding down shift isn't doing the trick (this complaint is scattered across the internet). Apple offers this ...
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0answers
29 views

Target Disk Mode MacBook Pro Early 2011 to Windows laptop

A few days ago the graphics card of my MacBook Pro (early 2011) stopped to work. After booting the MacBook the only thing you can see is a grey screen. Starting in recovery mode also doesn‘t work (...
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66 views

Can't boot Macbook Pro 2018 (possibly Little Snitch/Mojave related)

I have a Macbook Pro 2018 15" running Mojave (latest update). After updating to the latest Little Snitch and restarting my machine it now fails to boot. I boot up and can enter my password (I'm ...
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1answer
33 views

USB boot on mid 2010 Intel Mac mini

I have a mid 2010 Mac mini. I recently did an SSD upgrade in it. I tried using Internet Recovery to reinstall Mac OS X Lion (after which I am planning to upgrade further). However, the setup never ...
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0answers
33 views

unexpected reboot then unable to boot

Model Name: MacBook Pro Model Identifier: MacBookPro10,1 Processor Name: Intel Core i7 Processor Speed: 2.3 GHz Number of Processors: 1 Total Number of Cores: 4 L2 Cache (per ...
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1answer
24 views

why wont my macbook pro mount my disc

I have been using my macbook pro since 2013. Around early 2017 I got a 275gb crucial ssd and installed it. It was working fine until about a month ago my macbook would no longer turn on. Took it to ...
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16 views

Macbook Pro 13 2017 suddenly shutdown then stuck at apple logo (Duplicate from my unregistered account) [duplicate]

This is a duplicate thread from my first account. Can't access my first account so I have to duplicate it because I can't reply to it anymore. here's the first post from my old account. Anyways,I ...
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0answers
34 views

My Macbook Pro won't mount my ssd

So my Mid 2013 Macbook Pro wouldnt turn on and I ended up having to swap its motherboard to get it to turn on. However once I did that it did not automatically boot using the ssd (that was working ...
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94 views

stop starting sound/chime iMac Mojave

I want to stop the starting chime of my iMac with Mojave. I tried a couple of things from the web: sudo nvram SystemAudioVolume=%01 sudo nvram SystemAudioVolume=%00 sudo nvram SystemAudioVolume=" " ...
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1answer
68 views

I can no longer boot into macOS after resizing my bootcamp partition in EaseUS

I tried to enlarge the bootcamp windows 10 partition by 17gb. I went to disk utility on my mac, resized the mac's partition to smaller leaving 17-18gb of free space, then booted up the windows in ...
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1answer
103 views

Can't boot to Mac OS volume after Bootcamp Windows install

I've installed Windows 10 with Bootcamp on a new iMac with Mojave. Now I can't boot to MacOS volume. 1) Bootcamp tool in Windows don't see volume as bootable. 2) Option click on restart don't show ...
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2answers
125 views

Mojave requires OS reinstall on restart or power on. MACH Reboot type 14 = page fault. Screenshot

SPECS: Computer: MacBook Pro (Retina, 15-inch, Mid 2014) MacBookPro11,3. Memory: 16 GB 1600 MHz DDR3 HD: 1 TB APPLE SSD SM1024F Apple_APFS GRAPHICS: NVIDIA GeForce GT 750M 2048 MB Intel Iris Pro ...
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0answers
40 views

Cannot boot APFS Volume after time machine restore

First time i've seen this, but had a kernel panic from an installation, so booted into recovery, did a time machine restore. The log says it completed successfully, but upon boot I get the message: "...
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1answer
229 views

kernel panic – MacBook Pro 2011 won't boot, keeps restarting

My MacBook Pro 17" Late 2011 is suddenly unable to boot, keeps restarting over and over again, like 10-20 times until it decides to shut down. As it restarts each time, it displays a message like this ...
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18 views

Any way to repeatably assign a disk ID for a Fusion Drive hdd?

When mounting my fusion drive at boot time, sometimes the hdd is assigned disk0 and ssd is assigned disk1; other times these assignments are reversed. Is there a way to ensure that the id assignment ...
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0answers
78 views

Boot Partition suddenly inaccessible

I've run into quite a problem - my Mac (mid 2015 21.5" 4k iMac, running Mojave) cant find my boot partition (disk0s2). I've made some headway, it previously just showed it as FFFFFFFF-FFFF-FFFF-FFFF-...
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1answer
157 views

Mojave 59 second hang

About two weeks ago, my Mac started hanging on boot. It has been driving me crazy. Today I looked at the logs in /var/logs/system.log and on every boot I can see a 59 - 60 second hang, exactly. And ...
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14 views

Recovery USB doesn't work

I followed tutorial to create bootable USB stick with Mac OS Mojave and then from System Preferences --> Startup disk I selected USB drive and restarted my Macbook Pro and after boot I see:
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546 views

Cannot install Mojave via USB drive on new 2018 MacBook pro

Hey I have a new 15" MacBook Pro with High Sierra installed. I want to do a clean install of Mojave. I have followed the instructions at https://www.macrumors.com/how-to/clean-install-macos-10-14-...
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118 views

Unexpected shut downs on MacBook Air '15 with code -128

I have a MacBook Air, Early 2015, running macOS Mojave. Over the last 2 weeks, it has been unexpectedly shutting down and rebooting over varied time periods. Upon checking the shutdown logs, I found ...