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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Cannot mount √ - Data volume in Catalina

My mac mini 2012 suddenly couldn't boot this morning. It looks like the main volume (with everything) is unmounted, for some reason. When I try to mount it in Recovery Mode, I get a com.apple....
1 vote
1 answer
27 views

2009 Mac with Upgraded GPU

Well I feel really silly. I had a stable running 10.13 with a metal supported gpu but I wanted to clone the drive as I move into Mojave. So I thought, oh I’ll start it up on an old hard drive running ...
2 votes
0 answers
36 views

Let's try to fix the "Sleep Wake failure in EFI -- Failure code:: 0xffffffff 0x0000001f"

I have had this well-known issue for a way too long time... Now it got unbearable and I'm hoping to find help here. The issue For those unfamiliar with it, here's the general description: Starting ...
2 votes
1 answer
105 views

Blocking/Remove Boot Camp ablities

I'm looking for a way to prevent Boot Camp from being used on a mac. IDEALLY while keeping the user as an admin (or close to it). The issue I see is that basic user access is too restrictive and admin ...
11 votes
1 answer
14k views

iMac restarts instead of shutting down

I have a problem with my iMac restarting when it should be shutting down. This doesn't happen all the time but appears to happen more frequently when I've had the computer on for a few hours. What ...
2 votes
1 answer
17k views

MacBook has black screen, boots up but just the fan runs

Want to know what can be the problem and if it worth repairing. Just the fan boots up, the screen is black and the keyboard won’t light up. Apple genius could not troubleshoot.
0 votes
1 answer
36 views

Is it possible to dual boot MacOS alongside another MacOS on Apple Silicon Macs? (Work and play)

Due to requirements from our secops team, the only way I'm allowed to use my laptop for non work purposes (gaming, personal projects, etc) is if I'm able to install a separate MacOS install alongside ...
1 vote
1 answer
34 views

Booting into Windows 10 Installer from Mac Pro (2012)

I am trying to boot into the Windows 10 Installer (7 or 8 would work as well) on my 2012 Mac Pro using a USB drive. When holding the option key on startup, it recognizes the USB as bootable and lets ...
0 votes
1 answer
448 views

2016 MacBook Pro Touch Bar (A1706) Doesn't Boot When Battery is Plugged In

First time posting here so I'm sorry if I mess anything up. I have a 2016 MacBook Pro Touch Bar 13" that refuses to charge or boot when the battery is connected (It will boot when plugged into ...
2 votes
3 answers
5k 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 ...
0 votes
1 answer
27 views

Is there a way to copy content from a broken (no display) m1 macbook to another m1 macbook?

The broken MacBook is an M1, still turns on, but the display is broken so no visual. There are no external monitors to connect either. I don't wanna do any open-heart surgery on the broken MacBook ...
2 votes
1 answer
196 views

How can I cold-boot a mac with FileVault enabled without physical access to the mac?

If I had a Linux machine, I'd be able to enter the password for the encrypted boot disk in a serial terminal during the boot process, via another machine connected to the serial port I can SSH into. ...
0 votes
1 answer
319 views

MacBook Pro 2018: macOS reinstall to Mac without existing macOS, admin account & startup disk

I'm trying to reinstall macOS to seriously messed up MacBook Pro 2018. Apparently, problems started initially when Big Sur update failed. Computer's disk has since been erased and all accounts have ...
0 votes
1 answer
88 views

Missing Boot Options MacOS High Sierra

I have previously 3 OS installed on my MBP 2010 13”, MacOS High Sierra, Windows 10 and Linux (Peppermint OS). So I decided to change my linux to ZorinOS and trying to flash it. However, I think the ...
2 votes
3 answers
6k views

Mac Pro 3,1 Boot fail diagnosis

I have an old Mac Pro 2008 3,1 which after running pretty much 24/7 for 10 years was left switched off for a two-week holiday. Now when powered up, the PSU & GPU fans spin up, but nothing else ...
0 votes
1 answer
23 views

Mac mini stuck in boot (progress bar full) after SSD Upgrade

I've done the following: created a time machine backup from a mac mini with a 1TB HDD (only used about 40GB). replaced the disk with a previously used, working SSD - Samsung EVO 850, 500GB. time ...
13 votes
6 answers
58k views

"No administrator was found" in Startup Security Utility

My friend got a new MacBook Pro from office, later on he resigned and in a hurry erased the "Macintosh HD", now we are trying to install Mojave using Bootable USB but it won't allow because "External ...
4 votes
1 answer
17k views

Your computer is disabled. Try again in 60 minutes

I need to factory reset a MackBook Pro. Every time I start it up it takes ages to load and then I see this: Your computer is disabled. Try again in 60 minutes. I tried to restart the Mac with CMD + R ...
0 votes
1 answer
2k views

Your computer is disabled. Try again in 60 minutes. Firmware password

I need to factory reset a 2019 Mac Mini with the T2 chip. Understood this is a big challenge. Mini was caught in the "Your computer is disabled. Wait 60 minutes." boot loop using the guide at: Your ...
3 votes
1 answer
69 views

How do I enable USB boot after deleting my recovery partition?

I did a rather careless thing while in disk recovery (I was wiping a MacBook Pro 2018 for re-use) and I accidentally deleted the root volume, which means everything. Because I don't have a recovery ...
2 votes
1 answer
140 views

Can a version of Windows newer than Vista be installed on MacBookPro2,2 2006 Core 2 Duo?

Apple documents state my MacBookPro2,2 2006 Core 2 Duo 2.16 MHz will not run Windows versions newer than Vista. However, I burned a 32 bit Windows 7 ISO to a DVD, after converting the ISO to DVD/CD ...
1 vote
1 answer
112 views

Always start the Mac to Startup Manager without having to press and hold the Option key

I frequently switch between mac OS and Bootcamp. So I was wondering if there is an option to not have a preferred Startup Disk and always start to the Startup Manager, like you would get when pressing ...
1 vote
0 answers
42 views

Recovery Mode Can't Install OS X Mavericks (Late 2009 iMac)

I have a wiped iMac (27-Inch "Core i5" 2.66 - Late 2009) that boots into recovery mode. When I try to install OS X (Mavericks) It says "An error occurred while preparing the ...
2 votes
1 answer
715 views

Why won't my iMac boot? (com.apple.displaypolicyd exited with abnormal code: 1)

I'm using a 21.5-inch 2017 iMac with 3.6GHz i7 CPU, and Radeon Pro 560 graphics card. I'm running Mac OS Mojave 10.14.6 For the last week, the iMac will not finish booting. The progress bar gets ...
1 vote
1 answer
71 views

MacBook Pro Retina turns off during Apple logo

I have a mid-2014 15-inch MacBook Pro Retina. I was using it half an hour ago, and everything worked perfectly. I turned it off and left it for five minutes or less. I turned it back on to check ...
1 vote
0 answers
33 views

2019 Macbook Pro boots straight to internet recovery

I have a 2019 Macbook pro that had a swollen battery. The battery was causing the laptop to crash randomly, but I could boot into it only if I fully drained the battery first, after which it would ...
0 votes
0 answers
81 views

Boot process check for a suspicious terminal window on start up - macOS Monterey

macOS Monterey version 12.3.1 (21E258) shows a suspicious terminal window on start up. The title of the window is "Window". See at second 3 here https://youtu.be/ajRt_2cU6OQ?t=3 Still ...
1 vote
1 answer
146 views

Big Sur: Booting Win10 from SSD and Disable Internal Drive

Computer: MBP 15 Late 2013. I have a BIOS booting Windows 10 installed on an external SSD. Windows occupies two partition on this SSD. The first is the System partition and the second is a combined ...
0 votes
1 answer
31 views

I can't boot up disk options when I startup my Mac

I recently installed Asahi Linux, and for a few months now I've had no issue with it. Now, however, my computer decided to boot me up into Asahi Linux when I started charging it after it died. Usually,...
3 votes
2 answers
214 views

How to create bootable Windows 10 installer USB for PC?

I've downloaded Windows 10 from Microsoft and want to create a bootable USB stick for a PC. I've tried to flash the image with dd, but the stick did not boot. Then I've flashed the image with ...
0 votes
1 answer
362 views

WD Blue SSD stuck in a boot loop

Stuck in a bootloop with ssd So I recently pruchased a WD Blue 500GB SSD to replace my HDD in my 13" MBP mid-2012. At first I wanted to clone my HDD to the SSD, looked up a tutorial on ifixit and ...
0 votes
0 answers
118 views

Macbook Pro Can't Boot From macOS Monterey of External SSD

I have recently decide to install dual OS (macOS and Windows 10) on this newly bought SSD to run both Mac and Windows on my Macbook Pro 2017. What I did was, Disk Partition on Windows. Got three ...
0 votes
1 answer
142 views

Macbook 12" doesn't sleep/wake on close/open

I bought an Macbook 12" 2016 which doesn't want so sleep when I close the lid. Furthermore it also doesn't want so start if I open the lid. I tried resetting the SMC and NCRAM, then I reinstalled ...
2 votes
1 answer
84 views

Why does installing macOS Catalina and later on to a USB thumb drive fail?

To get these possibilities out of the way at the start: I'm not referring to a macOS installer (I can do that), but a full macOS with a Finder, etc. I'm specifically referring to a thumb drive (I can ...
0 votes
1 answer
4k views

Shell script to boot OSX in recovery mode and execute another shellscript

I'm working at a University and we are restoring our Macs using Apples ars which works great. The process is to manually go to the computer - reboot it in recovery mode and then run the ars command to ...
2 votes
5 answers
7k views

My mac has 64-bit EFI, but it only boots with 32-bit kernel

I followed the guide at http://macperformanceguide.com/SnowLeopard-64bit.html to boot into 64-bit mode. I had no problems with the instructions and on the boot screen it says "PAE enabled, 64bit mode ...
1 vote
1 answer
447 views

Viewing Logs on Startup volume that freezes

I have a MacBook Pro (Computer A) which freezes / restarts during startup. To investigate the problem, I purchased a brand new internal disk and did a basic installation (10.13 - the latest this model ...
0 votes
1 answer
199 views

Boot from external drive using rEFInd only if external drive is connected

I'm trying to use an external drive to contain a Windows install and a Big Sur install, but I'm having trouble configuring the boot options on a MacBook Pro 2018. I partitioned the external drive to ...
1 vote
1 answer
108 views

Problem creating a Windows 10 bootable USB on Windows, to work on a MacBook Pro

I have a MacBook Pro 2013, now with a clean SSD (no OS). I have a Windows 10 PC from which I am trying to create a bootable USB from a Windows 10 ISO file. I tried a lot of combinations and softwares, ...
0 votes
2 answers
573 views

Deleted Recovery partition (T2 chip Macbook pro). Can not boot to recovery. Getting Error -2003f

I have been trying for a few days, but I have not been able to get my mac into Recovery mode. I formatted the laptop and erased data from Mac utility also deleting macOs base system, the recovery ...
0 votes
1 answer
32 views

iPhone 6s refuses to boot after screen removal

Have a set of phone repair tools. After removing the iPhone 6s screen (carefully, teasing the ribbons off), and replacing with apple parts, there was an issue turning the phone on even after a hard ...
0 votes
0 answers
409 views

Monterey - repeated kernel panics : watchdog timeout: no successful checkins from dfrd in 180 seconds

My MacBook Pro (13-inch, 2019) is experiencing repeated kernel panics with the message below: panic(cpu 1 caller 0xfffffff02856d6ec): userspace watchdog timeout: no successful checkins from dfrd in ...
0 votes
1 answer
63 views

Sometimes my MacBook Pro wont boot at all

I have a 2015 15" MacBook Pro with specs below Lately my Mac wont wakeup from sleep and I have to force shutdown it. When I turn on back my Mac it won't boot (Keyboard and Screen didn't turn on ...
1 vote
0 answers
33 views

How to get into Recovery mode in MacOS 11.4 **Remotely**(M1)

I need to reboot into recovery mode on a remote Mac machine (M1, 11.4). I found that there are 2 ways to do it: One - By pressing some buttons at startup. Two - By setting the nvram like so: sudo ...
1 vote
3 answers
3k views

Everytime I start my MacBook Air there is a blank interface window

When I start my MacBook Air, an empty/blank window appears. Does anybody know how to get rid of or repair it so that when I boot up it doesn´t appear? There is nothing else wrong with it, I can just ...
0 votes
1 answer
446 views

Internet Recovery mode stuck at 24:00 estimated time

I am using an iMac (21.5-inch, Late 2011) with High Sierra 10.13.6. I have installed Windows 7 SP1 via Boot Camp and a bootable disk. It was working fine. So the other day, I decided to create a new ...
7 votes
4 answers
53k views

Mac stuck after trying to install updates, startup disk missing

I tried to install some updates on my Macbook Air. I received a notification asking if I wanted to restart the Macbook to install the updates, I accepted and restarted. When booting, the Apple logo ...
0 votes
0 answers
28 views

Fixing mac bootcamp boot to windows after formating a disk

I have an old iMac (21.5-inch, Mid 2011) and I wanted to give it a new life with a new SSD. I've installed both Mac & Windows on the SSD and life was good. Then I decided to format the old HDD to ...
2 votes
1 answer
66 views

I installed Xubuntu without installing rEFind. Is it safe to remove the linux partition at this point?

This is continuation from my previous question "I removed the rEFInd and rEFIt boot managers and now I've lost Windows Bootcamp from the Mac Startup Manager", where I now can boot Windows ...
0 votes
1 answer
115 views

I removed the rEFInd and rEFIt boot managers and now I've lost Windows Bootcamp from the Mac Startup Manager

I installed rEFInd boot manager because I wanted to add a linux partition. I already had bootcamp set up. However, after installing rEFInd, my Mac UI scaling was too large and slightly blurred. I have ...

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