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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Removing Firmware Lock

Back when I bought my me and my girlfriend a mac I also set up a firmware password and I now want to remove it from hers. I'm not sure I remember it correctly though. If it boots into recovery and ...
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MacOS/Debian10 dual boot- how to delete unknown EFI partition?

I have a macbook air dual booting macOS Catalina and Debian10 buster. I hold the option key at startup to choose the system I want. In the boot manager there's this efi partition (https://imgur.com/...
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IOAcceleratorFamily2 causing fault when booting MBP 2017 13 - High Sierra

I'm having an issue for a while across different macOS, currently reverting back to High Sierra for now. I managed to see the fault when booting up - ***2020-05-10 00:19:23.962870+0100 0x417 ...
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Install Windows 7 on macoS High Sierra (MBP Late 2011) [duplicate]

Device: MacBook Pro 8,2 (Late 2011) Operating System: macOS High Sierra Security Update: 2020-002 Boot Camp: Version 6.1.0 (6067.60.1) Context: A couple of weeks ago I decided it was time to do a ...
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Can you Help me with a A1466 MacBook Air That won't boot no matter what I try?

So, my brother's MacBook Air isn't working anymore. I have had my fair share of problems with my macs (2011 and 2012 macbook Pros, imacs, macBook airs,etc), and I've always been able to resolve these ...
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MacOS wont boot after partitioning my SSD

I installed Kali Linux on my iMac as Dual Boot. After a while I needed more space for Kali so I decided to shrink my Mac Partition (APFS) using MacOS Disk Utility Tool. I created a new 100 GB ...
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Macbook Pro 5,1 will only boot after multiple SMC resets

I have a Macbook Pro 5,1 (late 2008) running El Capitan (10.11), which is the latest officially supported OS for that machine. When I turn it off I cannot turn it back on without resetting the SMC ...
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Need to replug my Magic Keyboard after each shutdown

Each time I restart my 2018 Mac mini running Mojave after a complete shutdown, I have to connect my Magic Keyboard (to USB) to be able to type my login/password. Once it's done, I can unplug it and ...
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How do I delete files on a bootable osx Catalina disk from another bootup disk?

My friend's 2016 iMac keeps crashing on restart after trying to install the latest Catalina update. The problem seems to be not enough disk space, he only has about 16 GB free on his internal Mac HD. ...
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MBP Retina end 2014 is freezing before or during entering password

MacBook Pro Retina (mid 2014) is freezing once user log-in interface has been loaded. Thus, password cannot be entered. Usually, freezing starts before password can be entered or while entering the ...
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Mid 2011 iMac 27'' won't boot - 3 beeps and maxed fans

My iMac GPU failed about a week ago causing the OS to get stuck on a white screen with vertical pinkish stripes. I’ve performed a careful teardown to reflow the GPU. While I was at it I took the ...
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Is there a way to forcibly boot on a USB bootable device on a Mac?

I got an old iMac 21.5" (mid 2010) which I don't know yet if the graphic card is dead or if it's overall dead so I thought it would make sens to create a bootable USB drive running the latest OS ...
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How to check when an iPhone X has been booted before its last boot?

Is there a way to see when an iPhone has been booted before its last boot? I have a regular iPhone X with current iOS. Are there any log files available? I tried some Apps in the AppStore that pretend ...
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🚫when booting from usb drive

I have a boot hard drive from an old Mac and a new Mac. I want to boot the new Mac from the old Mac's boot disk (preferably without having to take the new Mac appart) So I attach it via USB, ...
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Macbook shows question mark folder on boot, can't boot to recovery mode

Recently I upgraded from Mojave to Catalina and I decided to encrypt my macbook's SSD, and also its firmware (it showed a long password after encryption and I wrote it down). After Installation I ...
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Can't enter Bootcamp on Mac

I haven't tried accessing Bootcamp for a long time, and just tried it, but after the Windows startup screen it boots back into macOS. I'm using the method of restarting and holding down the option ...
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169 views

MacBook shows flashing question mark in a folder when battery is at > 70%

I am sure many of you guys know the flashing folder icon which shows up when the Mac cannot find a drive to boot from. My 2017 MacBook Pro has this issue for some time now, but recently I found ...
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MacBook Pro stuck on Apple logo, Disk Utility first aid and fsck ok

My laptop (mid-2012) won't boot past the Apple logo. Safe boot won't work either. Disk utility in recovery mode and fsck in single-user mode both say the hard disk is fine. Verbose mode report has ...
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can a mid 2009 macbook pro with intel chipset run windows 10? the bootcamp assistant shows that it will install windows 7

i tried making an iso usb to boot from with etcher, unetbootin, and woeusb on ubuntu. the woeusb boot freezes the computer until i push enter, then it boots up normal into mac os. the etcher iso usb ...
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How to fix EFI boot “Software Update is Required for this disk” when trying to boot linux?

I created a bootable linux USB following Ubuntu's tutorial. When I startup the machine holding Option an EFI Boot drive shows up. When I select it, it goes to Apple Logo Loading > Then Light Grey ...
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135 views

rEFInd boot manager not showing EFI shell

After succesfully installing the rEFInd tool from https://www.rodsbooks.com/refind/ on a macbook with macos 10.15, restarting the laptop does bring me into the rEFInd boot manager. But the only option ...
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MacBook Air not booting up with a black screen

I have a MacBook Air (2014 Model) and facing a bit of weird problem here. I had plugged in my Mac and kept a huge file for download and locked the screen, (the disk might have actually run out of ...
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Partition type FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF and drive unreachable [duplicate]

I had Ubuntu dual booted on my 2015 MacBook Pro. I tried to remove the Ubuntu partition using Disk Utility, then when I attempted to delete the Linux partitons, it is completely gone out of sight. I ...
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2017 MacBook Pro A1708 died suddenly when connecting to USB-C power while waking from sleep

I have a 2017 MBP, it's nearly two years old, and I don't have AppleCare. I did get the keyboard serviced about a month and a half ago before the COVID closures. I am on MacOS Catalina 10.15.4. Today,...
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2012 Retina MacBook Pro stuck in frustrating restart loop

Mac has SSD drive. I don't care about losing data, I just want this working. It was updated to Catalina, worked for a couple weeks and now: keeps restarting to black screen When it does boot into ...
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19 views

MacBook Pro 13 June 2012 Boots Into Internal HDD Instead of External USB

The background: Last week I booted up my Macbook Pro 13 June 2012 edition. But the machine turned off midway on the apple loading screen. I did the First Aid on Disk Utility using command + R and it ...
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36 views

Windows 10 Boot Camp USB boots but throws 0xc0000225 before being able to install anything

I have a MBP 2014 15" with all the latest updates installed I downloaded the official Windows 10 ISO 64bit (20 november 2019 update) I verified that this ISO works, using Virtualbox I got a new ...
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Crash/hang during boot sequence after loading apple menubar items in Mojave

Macbook Pro 15" 2018 32GB RAM running the latest addition of Mojave. 90% of the time, when I start up my computer it hangs. This occurs after I’ve logged in but will result in either a black screen ...
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29 views

Remove “Windows” Entry from Mac Boot Loader

How can I delete the "Windows" option I have tried several option, but nothing seems to work I even wipe out the Mac and reinstall macOS Catalina and nothing. It shows when I connect the USB with ...
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Unable to boot from SSD but can still access files

Yesterday, I was attempting to update to Catalina, I was using macOS 10.12.6 on my Macbook Pro Retina 13-inch Late 2013 model. When running the installer it asked me to select a disk to install it ...
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Dead Macbook Pro 13 2018 w/ Touch Bar

I have a Macbook Pro 2018 13 with Touchbar. I had bootcamp + mojave installed, but accidentaly removed the macos, mac recovery and bootcamp recovery partitions ... Im left with a non working bootcamp ...
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Mac fails to boot up after crash, showing white lines, disk checks out OK

I'm running an old Mac Pro (early 2009) with Lion 10.7, 650GB hard drive near full. This morning the computer became unresponsive besides the mouse and showed columns of light gray lines across the ...
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112 views

EFI Partition Change name and Logo

I've installed Windows again but this time on a external SSD. it's all working fine, but when holding the alt/option key it's giving me Macintosh HD and EFI partition. how can I change this name "EFI ...
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Macbook Pro unable to boot and other strange internal drive behaviour

I don't know how/why this happened, but my Macbook Pro 13" (Retina, Mid 2014) running macOS Mojave will no longer boot from the internal drive. When I boot into internet recovery, sometimes the ...
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1answer
237 views

Drivers not working on Windows 10 installed (CLI process) on external SSD running on Mac mini - EFI Started But Screen Black After Win Logo

I followed the steps listed in https://apple.stackexchange.com/a/384447/9058 to install Windows 10 via CLI but am stuck at step 7. I restarted my Mac Mini and held down the option key. The Mac HD and ...
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1answer
76 views

MBP Early 2015 (A1502) has died!

Went to use my MacBook two days after switching on with no issue. When I went to boot it was completely dead. When I went to charge it, there was no light. I left it on the charger for 20 mins and ...
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Boot Camp Assistance is stuck on create a partition? Catalina 10.15.3

I am having a similar issue to the following thread: Boot Camp Assistance is stuck on create a partition? Except as shown below I'm stuck on 45% and there are some error messages I do not ...
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1answer
340 views

SSD firmware upgrade requires iso on a pendrive: how to make that bootable?

Goal is updating a NVMe SSD firmware on a Mac without optical drive via USB stick that should contain a minimal Linux, flasher and payload. The instructions (PDF) for a firmware update utility say to ...
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1answer
36 views

MacBook Air doesn't start - no power on

MacBook Air not starting after SMC reset. Earlier, my Mac was not starting after SMC reset or NVRAM reset. The charger light was green. Nothing was happening on SMC reset. Battery Status was Service ...
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1answer
48 views

Keyboard lag, lost keystrokes, and high fan speed in Filevault's EFI pre-boot unlock/login screen (MacBook Pro 2017)

I have a MacBook Pro (15-inch, 2017) with macOS 10.15.4 and FileVault enabled. When I boot the machine, the Filevault's pre-boot unlock screen appears as normal, prompting me for my password. Now, ...
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1answer
50 views

How to boot into Windows on SSD from macOS

I have a MacBook Pro (13-inch, 2018) running macOS Catalina (10.15.2). I have an old laptop that died, but that still has a (newer) functioning SSD. This SSD has Windows 10 already installed on it, ...
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Can't boot, OS volume type 'FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFF'

after trying to remove a linux distribution through diskutil, i somehow managed to mess up my OS-Volume - i can't boot: Output of diskutil list Output of gpt -r show /dev/disk0 Thats the output i ...
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After importing Bootcamp parition to Parallels, can I a natively boot into Bootcamp?

I saw some articles that I can "import" a Bootcamp installation into Parallels. But due to performance reasons I might need to boot into the Bootcamp partition natively with a restart of the Mac. ...
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2answers
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Does Macbook Pro have a hardware or software issue? (Constantly Stuck on White Screen)

My Macbook Pro Late 2011 (running on Sierra) has suddenly started having the white screen problem and I've tried the following: NVRAM, PRAM and SMC reset (could not get past loading bar after ...
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SSD HD problem with 2012 mac mini

I have a 2012 mac mini with a 250GB SSD and a 1 TB HD, both internal. I was using the SSD to boot but then it wouldn't boot so I did an internet recovery and Mavericks was installed on the the 1 TB HD....
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MacBook Pro Early 2011 Clean Install

I have an early 2011 MacBook Pro 15" (Model A1286) that I have been trying to troubleshoot off and on for about 6 months. Original issue seemed to be a kernel panic where the graphics would pixelate ...
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2answers
41 views

Macintosh HD is not visible on boot but is can be detected using Recovery on an installation USB

I've transplanted the SSD drive between two identical MacBook Air's - both are 13" Early 2015 models - as one of them had died. Upon moving the SSD from the dead MacBook to the other one, booting the ...
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32 views

What is the command line equivalent of PRAM reset?

My wired keyboard is starting to flake out and I'm not able to PRAM reset the machine at boot with the Option ⌥ + Command ⌘ + P + R sequence. I tried plugging in a Windows keyboard and use Alt + ...
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44 views

Login user - opposite to launchctl bootout user/id

How can I login user in programmatically way? I need something opposite to command launchctl bootout user/502 that logouts user with id=502. Does this way exist?
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40 views

Macbook Air 2013 won't boot up; Charging cable never turns green, always amber

I have a 2013 MacBook Air 13" (A1466), which all off a sudden wouldn't boot up. The charging LED on the cable was always green. I then attempted: Holding the power button down 10 secs SMC Reset ...

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