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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234 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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117 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
170 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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1answer
258 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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1answer
645 views

Single User mode (10.13.6) write locked with SIP disabled

In the light of unbricking my 2011 MBPro due to the known dGPU failure, I am following LangLangC's (great!) response/guide in GPU problem - Boot Hangs on Grey Screen; combined with some other threads ...
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1answer
506 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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1answer
20 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
272 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
42 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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3answers
124k views

What are next steps when fsck reports “could not be repaired after 3 attempts”?

My Mac Book Pro 13.-" doesn´t get past the grey booting screen with the apple and the spinning wheel (The loading bar appears but when it´s done nothing happens) I have 220 GB in one single ...
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1answer
659 views

Windows 10 install on mid 2010 Mac Pro - “EFI boot” is not in startup manager

I have been working towards installing Windows 10 on my mid-2010 Mac Pro and have been using the following thread as a guide: said thread. I've formatted both my BOOTCAMP volume (where I plan on ...
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22 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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1answer
511 views

Replacing macOS with elementary OS. Computer boots normally into elementary OS, but boot menu (option key on boot) doesn't show anything

I want to replace macOS with elementary OS on a Mac. I formated the entire hard disk, inserted the elementary OS bootable USB, selected EFI boot on the boot loader (only option) and installed ...
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1answer
1k 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
46 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
3k views

How to upgrade boot rom firmware without an original drive

I have a 2015 MacBook pro that I am in the process of refurbishing. I purchased it used and it was missing many parts (wifi card, IO board, SSD). I have replaced all of these parts and purchased an ...
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1answer
332 views

Macbook Startup Freeze

I have a mid-2013 Macbook Air (A1466) that has been freezing/hanging during the startup process. It is running Mojave 10.14.2. This issue first began when I attempted to wake the computer from sleep ...
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1answer
41 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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1answer
49 views

How can I troubleshoot Macbook pro 13 with touch bar model 2017 that won’t start?

I took my Mac on vacation where it was working fine. Upon return, I opened it up and nothing; no start or any sound. I tried all the tricks of soft keys but nothing. I don't understand what went ...
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0answers
36 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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1answer
97 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
43 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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3answers
25k views

“Battery not charging” on MacBook Pro

I have the infamous "battery not charging" problem on my 2014 Retina MacBook Pro. The power source shows as "Power source: power adapter". I checked system info and I have 1100+ cycles, which I guess ...
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3answers
2k views

NTFS appears every time

Every time I boot my Mac, an "NTFS for Mac OS X" window appears. In the settings I can't change this. Here is the window I have El capitan 10.11.4 I found this: To resolve the issue you need to ...
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1answer
61 views

Can't boot to bootcamp windows anymore

I think I made a big mistake: I wanted to boot to ubuntu from my usbstick, therefore I used the ppa mactel-boot and I could boot into ubuntu (this tutorial: https://medium.com/@mmiglier/ubuntu-...
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4answers
9k views

Macbook Pro boots successfully when using hard drive in USB enclosure but doesn't boot when connected internally

Apologies for the long question. I will keep it as simple as I can. Last week my Macbook Pro (13-inch, Mid 2010) started to act strange. It started when I tried to open Skype and received an error ...
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1answer
158 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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1answer
145 views

USB ports not working, no paired magic keyboard, “no bootable device, press any key” on an iMac 2009

Sad story. I thought it was the HDD, so I ended up asking someone to reinstall macOS on it using their Recovery, and that worked. The hard drive booted up using their 2012?ish Mac mini. However, ...
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1answer
67 views

Boot off of an external hard drive

I made 2 partitions on my external hard drive. One is 240ish GB and one is 10GB. I put the OS X Lion install image on the 10GB partition (using restore) and when that finished I tried to boot from ...
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1answer
67 views

iPhone stuck on boot screen

My non-jailbroken iPhone 6S Plus (iOS 9.3.5) failed to boot up to the lock screen (stuck in apple logo) after the battery was depleted. Hoping to keep my data intact, I have tried several online ...
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1answer
311 views

Boot Windows from USB with EFI password

I've created an USB with Windows 10 from where I can boot: Restart pressing option. Select USB EFI partition. Windows starts. When EFI password is active it will be asked when booting pressing the ...
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1answer
277 views

booting linux from external drive on mac

I had Linux installed on USB using pure EFI boot. I had been using this tutorial. Everything was working flawlessly to the moment of installing Windows using Mac Boot Camp. Now I don't see the EFI ...
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1answer
249 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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1answer
90 views

MacBook Pro not booting

I have a mid 2010 MacBook Pro that won't boot up. Faced this problem quite a while ago, so i sent it in for repair and was told the logic board may need replacement. The store told me they tested my ...
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1answer
655 views

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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1answer
150 views

Black console screen shows up during boot (verbose mode not turned on)

Over the past few months when my Mac boots up, the grey screen with the apple disappears and is replaced with a unix style console screen, which scrolls like a linux PC booting up. I have tried ...
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3answers
59 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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1answer
816 views

Unwanted GRUB on macOS High Sierra

While installing Linux Mint 19 to a USB, I managed to get GRUB installed on my Mac hard drive. I can still boot to the macOS if I hold the Option key down. How can I remove GRUB and revert my Mac ...
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1answer
269 views

iPhone 7 Plus takes days to turn on showing Apple logo or black screen

I’ve had this issue for months but in the last couple of days it’s got very very bad. When my phone runs out of battery it needs like 2–3 days to turn back on. At the beginning of this problem the ...
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0answers
289 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 ...
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2answers
201 views

Boot Camp keeps booting to Ubuntu instead of Windows

I have a macos and Windows 10 already installed. I went ahead and installed ubuntu via EFI, and I think I really messed something up. Every time I boot and select Windows it goes to the purple ...
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1answer
17k views

MacBook Pro fuzzy screen and freezes on startup at the Apple logo with half progress bar

Details: MacBook Pro 2011, El Capitan. Issue: As mentioned above in the subject. Picture Given below. Resolutions tried so far: PRAM Reset - Heard the Chime of reboot but still hangs the same way ...
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1answer
96 views

MacBook air is messed up, can't erase the hard drive from recovery

Something happened when installing El Capitan and now I have only one partition in my hard drive with only 30 gigs of space when it's supposed to be 128. I can't seem to erase anything. Any advice?
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1answer
866 views

Can't enter Apple Hardware Test Mode on my macbook pro

I have an Early 2011 MacBook Pro. When I hold down D immediately after restart, it boots to the normal login screen. When I hold down ALT+D (with a working wifi connection before the reboot) the same ...
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1answer
312 views

Bootcamp disk not recognized, can’t get gdisk to work

UPDATE: This is for a Mac Pro (Mid-2010) MacPro5,1 with the latest firmware, 6-core 3.46 Intel Xeon, 32GB 1333 Mhz DDR3 memory. I tried the instructions on this post: Triple Boot: “Missing ...
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0answers
20 views

MacBook Pro stuck on white screen

I have a MacBook Pro mid 2013. As you may have guessed from the title, it won't boot. Neither the Disk Utility boots. The only thing I can do is boot from a bootable USB (CMD + OPTION + R) with OSX ...
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1answer
261 views

iMac Intel 21.5" EMC 2805 Looping chime on booting

I am in trouble with my imac. Let me tell our story; My imac was too slow and I decided to change HDD with a SSD. If I just be changed HDD, There was no problem. But I want to clone my HDD to SSD ...
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5answers
66k views

How do I make a bootable USB flash drive on a Mac?

Does anyone have a Terminal command-line recipe for making a new bootable USB flash drive for one of the new MacBook Air's? Is there a way to dd copy the USB boot device that comes in the box and ...
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0answers
37 views

iMac6,1 showing multicolor after installing mac os x 10.7

It was on Os x 10.6.3 before I decided to install fresh OS x 10.7 everything was fine after the installation but when I restart the 🖥 it start showing multicolor as seen in the picture attached. I ...
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1answer
2k 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 ...