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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15 views

Sierra stuck at boot screen, upgrading to mojove will create new bootup files?

I am facing some issues in High Sierra . Since few days it's stuck at boot screen and load very slow, mac doesn't start even after completing the load progress bar. But when I charge it fully and ...
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1answer
32 views

Installing new PCIe m2 SSD on MacBook Pro 2014

I have a MacBook Pro Retina 2014 with a bad hard drive and recently found out that I can use a PCIe m2 SSD with it on macOS High Sierra. I purchased a Samsung EVO 970 and an adapter to use in the ...
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1answer
25 views

Dual booting older (2011) MBP into Windows and Linux (not macOS)

I was given a 8,2 15" MBP, and b/c its graphics won't allow me to install Mojave, I want to turn it into a dual booted Linux/Windows machine. (I'm a developer, and find myself needing to tread into ...
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MacBook Pro 2009 question mark folder screen - holding down option shows my mouse [duplicate]

My MacBook Pro 2009 (A1278) is having an issue. When I power it up it shows a blinking folder with a question mark. I have tried most of the options that I've seen, none of them showing any signs of ...
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0answers
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I can't go back to macOS after successfully installing Win 10 from Boot Camp Assistant

I have a iMac running macOS High Sierra. I ran Boot Camp Assistant on it and was able to switch to Win 10, successfully, without any problem. I downloaded the ISO file for Win 10, and used the USB ...
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2012 Mac Mini with Fusion Drive only Boots while Verbose Mode

I have a mac mini 2012 which only boots to completion when in verbose mode. when just normal booted it gives the fan symbol for a few seconds and then loops back around. I've done a time machine ...
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35 views

Running bless to place boot files failed

I have just cloned the internal hard drive on a Macbook Pro 2013 to an SSD drive, but I keep getting "Running bless to place boot files failed” message if I try to boot from it. I tried entering ...
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1answer
36 views

I used Boot Camp Assistant and can't boot OS X

I installed Windows 10 on my Mac using Boot Camp Assistant. When I got into Windows, it asked me if I wanted to install Boot Camp. I selected yes. Now, when I try to restart in OS X, it says "can't ...
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1answer
32 views

Howto change the Apple logo after Filevault login?

I managed to change the Apple logo that comes up before my APFS encrypted Filevault disk is accessible from... (That's a white apple on a transparent background). ... to... After logging in and ...
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27 views

How to restore Startup Manager Bootcamp option to point at Windows partition - GRUB overrided Startup Manager when Ubuntu installed

For getting macOS, Windows 10 and Ubuntu as boot options at start up, I: ran Bootcamp to install Windows 10. The result was macOS and Windows options available as boot options - when the option-key ...
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2answers
37 views

Macbook Pro Booting Issue

I have a Macbook Pro 15" Retina Mid 2014. Off late, whenever i put my mac to sleep and when i try to wake it up, it doesnt! I need restart it, but then it takes lot of time and just hangs at the end ...
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1answer
50 views

Mac Freezes on Launch

Mac running 10.14.5 is freezing after the login screen each time I reboot. Seeing these stange messages in /var/log/system.log that seems suspect. com.apple.xpc.launchd[1] (com.apple.CloudDocs....
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1answer
202 views

How can I enter recovery mode (for Mac OS, on an iMac) remotely?

Our team administrates several Macs. To save costs (flights, etc.) in events where we have to remotely restore a system at our client location, we are trying to understand how to enter recovery mode ...
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0answers
21 views

Recovery Mode can't see new drive but USB installer can

I'm having a lot of difficulty replacing a dead SSD in a 2013 macbook pro. Before the drive died the computer was running a fairly old version of OS X, seemingly Yosemite. I bought an OEM ...
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15 views

How to setup properly Clover EFI?

I need a little help to how to setup Clover Bootloader - to handle a dual-boot on a late 2008 unibody Mac(Intel dual-core 2GHz, 4GB). This Mac is already containing two partitions - see below - but ...
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1answer
16 views

Can't access Recovery Mode (2011 Mac Mini)

I was gifted a 2011 Mac Mini and I decided to try and get the thing up and running with a recent enough version of MacOS. When I turned the thing on, I was greeted with a fast boot to grub, indicating ...
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1answer
23 views

Reinstall macOS on Ubuntu MBP

After an update broke my 2015 MBP, I installed Ubuntu 18.04 on it (via USB). Now I want to go back to MacOS. When I boot into recovery mode (cmd+optn+R), I reach the usual menu of options. When I ...
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1answer
26 views

MacBook Pro (2011) shows flashing folder at startup but the disk is valid

I have a MacBook Pro (early 2011) and recently the laptop boots to a white screen that flashes a folder with a question mark. I know that means the laptop cannot detect an available startup disk. I ...
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0answers
14 views

How do I install El Capitan and ParrotSec dual-boot? (without Kernel Panics)

ParrotSec was installed on this machine and it was running fine - meanwhile I could not reach it from Grub2 because if I chose MacOSX-32bit/MacOSX-64bit it popped back a Kernel Panic. On the other ...
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40 views

MacBook Pro late 2013 (Model: A1502) won't boot or respond to any Input

I have a big problem with my MacBook Pro late 2013 it does not boot or light up in any way. Current behavior The only reaction that I get is, when I connect it to the powercord and start with the ...
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1answer
24 views

Macbook stuck at login screen

My macbook is stuck on the login screen after entering the password. I've been using this MBP for the past 4 years and it's been slowing down of late. However, I'm now having trouble logging in to my ...
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1answer
24 views

MBA 2017 won't boot up in macOS, but will in Ubuntu

A few days ago my spouse's MBA started showing problems. At first it wouldn't turn on at all, showing an orange indicator on the MagSafe charger. After resetting the SMC a couple times and letting it ...
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0answers
55 views

Getting the “prohibitory” symbol on startup

I have a mid-2004 PowerMac G5 that until recently was running fine. It had OS-X 10.3.5 installed. At one point the screen froze, no mouse, no keyboard. I powered it down and back up again. That's ...
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3answers
61 views

MacBook Pro 15" 2008 freezes with colorful screen

Starting a few days ago my Mac froze mid usage, was using Chrome when it did it. I got all these crazy colors everywhere, and it froze. I turned off the power, waited a few, then turned back on. It ...
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1answer
21 views

MBA (2013-15?) wont boot from macOS boot stick

A friend of mine somehow managed to delete his internal drive including the recovery partition while trying to reset his MacBook to factory settings. Now when trying to boot up the MBA only displays ...
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0answers
62 views

MacBook Pro 13" Mid-2010 - upgrade HDD to SDD with intermittent Prohibitory sign

Good morning folks, I can't wrap my head around this one. I recently upgraded a failing 250 GB HDD to a 1 TB SSD and transitioned the data using a hard drive duplicator. When starting from a cold ...
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0answers
18 views

How do I prevent repeated iCloud logins when switching boot disk?

I've several different APFS bootable volumes. When I restart, and switch from MacOS 13 to 15, or back to 13, after I log into my user account, I'm asked to re-authenticate on iCloud. It seems that ...
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0answers
97 views

How to get DMG file for making macOS USB on Windows PC?

I saw this discussion and updates on StackExchange on making macOS USB on Windows. I'm unable to comment there, so I'm posting a new question. I have been trying everything from that page, but as of ...
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1answer
17 views

Macbook shut itself down during sleep and won't boot unless leave it for a few days

model: macbook 13'3 with retina display (2013 late autumn) OS: 10.10.5 symptons: The macbook shut itself down while I put it to sleep with amost 60% battary left; Won't turn on by pressing power ...
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1answer
30 views

Can't boot from USB or reset PRAM/NVRAM on mid-2006 iMac

I got a free mid-2006 iMac from a friend, and while it boots to the login screen, all the user accounts are password-protected, so I've decided to try reinstalling Mac OS X Leopard. I created a ...
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1answer
79 views

SSD drive partition showing as FFFF on my MacBook Pro 2010

About three years ago I replaced my original hard disk on my 2010 MacBook Pro with SSD drive to make the system run faster. It did work fine until now. Regrettably I'm in this position now as my ...
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Mac boot partition FFFF (High Sierra) [duplicate]

I know many people have had similar kind of issues and I tried to fix this with the answers I found but with no luck. Device: iMac 27" mid 2011 OS: Latest High Sierra (I think the recovery mode is ...
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2answers
772 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 ...
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2answers
520 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 +...
4
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1answer
46 views

Cloning macs within a context of no internet access

I'm shipping a project which my client (the army) wants to run on new MacMinis2019, which they, being less tech saavy consider a whole (the mac with all the software and configuration installed on it ...
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0answers
31 views

Problems with bless tool

The computer is an early 2015 13" MacBook Pro. Two weeks ago we sent my spouses 15" in for battery recall, and bought an OWC Aura Pro to replace my internal 1GB SSD (we SuperDuper'd her 15" MacBook's ...
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1answer
124 views

How to stop macOS updates from taking over the rEFInd boot manager? [duplicate]

I have rEFInd installed on the EFI partition of my 2015 MacBook Air. Every time I update macOS, it ends up taking over the bootloader and resetting it to using the macOS operating system. Afterwards, ...
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1answer
31 views

System fails to recognize main macos boot partition after Ubuntu dual booting attempt

I recently attempted, and temporarily succeeded, in dual-booting Ubuntu and MacOS Mojave on my MacBook Air. After I installed and successfully tested Ubuntu, I tried to use Disk Utility to create a ...
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0answers
37 views

Mac Pro just turns off instead of entering safe mode

I'm trying to deal with an old Mac Pro (I'm not sure how old) which will not boot - it shows the grey screen with the Apple logo, and the progress bar rushes up to 50%, then slowly creeps up to 100%, ...
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0answers
22 views

MacOS Boot Error

I hope I am able to explain the problem accurately and with sufficient detail. The problem started with the flashing folder at boot up. I used the Command + r option to get into recovery mode. ...
3
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1answer
39 views

MacBook Air 7.1 (early 2015) freezes for five to ten minutes after login

Recently, my MacBook Air 7.1 (early 2015) has been very slow on startup. That is, the system boots quickly, and then I'm able to login, and the desktop begins to load. Initially, I have control and ...
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1answer
71 views

mac won't start after “sudo chown -R $(whoami) $(brew --prefix)/*” command

I tried to install a program and it alwaysed lacked permission on /usr/local. I tried sudo chown -R $USER /usr/local but then found out that doesn't work anymore with High Sierra. So I tried sudo ...
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0answers
52 views

How to create bootable installation media for Mojave without erasing the target drive

I would like to use my existing external ssd (500GB) as a bootable Mojave installation disk. But I don't want to erase the contents or format the drive. This page has the general instructions https://...
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1answer
133 views

Stuck during clean install on a new SSD on a late 2009 iMac

I hope you might be able to help me out since I am completely stuck in my attempt to perform a clean install of High Sierra on a late 2009 iMac (model number A1311 – does not have Internet recovery) ...
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1answer
68 views

When does software take over firmware during boot in Macs?

This is for me the $1 million question I’ve never had a certain answer about. I learnt long ago that in newer 32bit-64bit PCs the initial phase of the startup process is controlled by firmware and is ...
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0answers
107 views

Macbook Pro stuck after I enter user password, screen starts to switching off and on while loading is stuck

Yesterday everything was working fine. Today, when I turned on macbook, enter the password as usual and in 60-75% of loading bar - screen starts to turn off and on. When screen turned on again, there'...
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0answers
78 views

Dual boot bootloader problems - Mac & Linux

I recently stumbled upon a problem with default MacOS bootloader. The scenario is next: My Macbook pro 2012 only has one 256 GB drive from where I specified 70 GB's of space to be used as Ext4 ...
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1answer
55 views

NVRAM Showing Questionable Payload Variables… Can anyone verify if this is normal?

I used the terminal command in macOS 'nvram -xp': student:~ admin$ nvram -xp <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www....
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1answer
33 views

How to go to boot options?

I have a MacBookPro Retina 13" early 2015 and I can not enter the boot options. The Device is running OS X El Capitan. I have tried the following things with no luck: Attempt 1 - Hold the Option ...
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0answers
155 views

Error “No bootable device — insert boot disk and press any key” after trying to boot into Windows

today I was going to boot into my Windows partition and went into System Preferences and chose to boot into Windows and pressed Restart. After I did this all I got was "No bootable device -- insert ...