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Questions tagged [startup]

Usually referring to the startup process of a device or computer from an initial "cold" state rather than sleep or hibernation.

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Is there any way to prevent a MacBook Air (2019) from powering up when an input device (keyboard or trackpad) is touched or the lid is open?

While I know there is a hack to prevent MacBooks — 2018 and higher — from starting up when the lid is open, I would like to know if there is a similar hack to prevent a MacBook from powering up when ...
Giacomo1968's user avatar
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10 votes
0 answers
9k 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 ...
mrclng's user avatar
  • 201
9 votes
0 answers
3k views

Mac OS goes into Recovery mode at every update

After updating my Mac to Big Sur, every single 11.x update of Mac OS (including the update to Big Sur itself, as well as the latest to 11.4) ends up with restarting my Mac to Recovery mode, that is, I ...
Alessandro Cosentino's user avatar
9 votes
1 answer
7k views

Macbook doesn't display on external screen until after I log in (Yosemite). How to fix?

I have a macbook pro (mid-2011) and an HP Pavilion 22bw (prob inconsequential) connected via a Thunderbolt DVI Adapter. Ever since installing Yosemite, I now need to open the macbook pro and log in ...
timshutes's user avatar
  • 359
7 votes
0 answers
8k views

Why do some Login Items insist on displaying at startup, despite being set to "Hide"?

Under System Preferences > Users & Groups > Login Items, I have a number of applications that are set to launch on system startup. Some of these, despite being marked to "Hide" on startup, insist ...
P A N's user avatar
  • 9,884
6 votes
0 answers
4k views

Whats wrong if 'Invalid BS_jmpBoot in boot block: 000000'

I have a corrupted partition and upon trying to repair it with disk utility it gives the error Invalid BS_jmpBoot in boot block: 000000 Several postings on the internet describe this problem related ...
bomben's user avatar
  • 1,093
5 votes
1 answer
18k views

I deleted Macintosh HD - Data and now the computer won't boot even in Recovery Mode

Okay all, I think I messed up really big time. Was so excited and delighted today to see my brand spanking new MacBook Air arrive (running Catalina). Everything was wokring great; I started Migration ...
Displaced Hoser's user avatar
5 votes
0 answers
5k views

Blinking question mark folder after updating from Mojave to Catalina

I used macOS Mojave on mid-2014 MacBook Pro before update. While installation it forced me to restart. After restart nightmare has been started. The Blinking question mark folder has appeared on my ...
berkay's user avatar
  • 51
5 votes
0 answers
4k views

What is IOConsoleusers: gIOScreenLockState error during boot?

So yesterday morning I was using my Mac normally encoding some videos in HandBrake and installing some github repo installing some python packages system wide like a python package named b45. Then I ...
nobody user's user avatar
4 votes
0 answers
2k views

Disable “Enable Ask Siri” at startup

On Big Sur (11.2.1, but I believe also 11.2), every time I restart, I get asked asked again if I want to enable ask siri. Is there a way to get it to stop asking? This is specifically when macos ...
ysth's user avatar
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4 votes
0 answers
368 views

Deleting a linux dual boot on mac

I have a linux dual boot installed with rEFInd, which I want to delete. I tried to just delete the disk partition, but that throws an error. MediaKit reports partition (map) too small. If you ...
Narusan's user avatar
  • 259
4 votes
0 answers
83 views

Is my system disk damaged?

Recently I couldn't get my Mac (bought in April - 2009) to boot. The hard disk was quite full and honestly speaking I kept ignoring a number of warnings from OS X to 'free up some space'. I have been ...
Ashish's user avatar
  • 41
4 votes
0 answers
5k views

Creating a bootable Windows USB drive when Bootcamp is already installed

I just upgraded to El Capitan, and am now having issues booting directly into Windows. I need a bootable Windows USB stick to repair my bootcamp partition, but I'm having a difficult time making that ...
user949286's user avatar
4 votes
1 answer
12k views

Macbook boots up to grey 'prohibited' symbol

I'm having an issue with my '09 13" Macbook Pro. When I boot it up, it seems to be booting normally until about thirty seconds in, when the Apple symbol is replaced with a kind of 'no-smoking' symbol, ...
user avatar
4 votes
0 answers
823 views

How to 'startx' from Single User Mode?

I usually run dwm inside Xquartz on OS X Mountain Lion 10.8. But is there a way to boot into Safe Mode (or a console), then startx or xinit, skipping Aqua? I'd like to boot directly into X11.
Jack Stewart's user avatar
3 votes
1 answer
130 views

I'm unable to reinstall OS X

I have an iMac11,1 without an OS on it (Recovery mode is still on it) and I therefore want to reinstall OS X. First thing I've tried was doing it using the recovery mode. I've reformatted the "...
theboringkid's user avatar
3 votes
1 answer
1k 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 ...
Maximilian Becker's user avatar
3 votes
0 answers
905 views

iMac Mid 2011 can't boot from recovery USB

I am trying to install High Sierra on an old iMac (21.5-inch, Mid 2011). First, I tried Internet Recovery, but failed to make any progress and threw a cryptic error. (Something like -21 06U, but ...
jpjmi's user avatar
  • 31
3 votes
0 answers
53 views

MBP 13" 2020 x64 starts unbelievably slow (10 mins for restart)

I received a new MBP 13" 2020 x64 in January this year. It was already updated to Big Sur (Currently 11.3 is installed). Since the beginning, it seems to have issues when starting up. E.g. I ...
mrkw's user avatar
  • 31
3 votes
0 answers
527 views

How can users install fully unsigned (non-Apple) operating system on an Apple Silicon Mac?

The man page for bputil contains a somewhat-cryptic description of the --permissive-security setting: At a high level, Permissive Security allows configuration options to be set to not require all ...
Wowfunhappy's user avatar
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3 votes
0 answers
538 views

Download failed in recovery mode, stuck with no OS on my Mac

Recently after upgrading to Catalina, my MacBook Pro has become really slow, so I thought it might be the system’s problem, so I decided to reinstall the original system that comes with the Mac (El ...
Olivier Ma's user avatar
3 votes
0 answers
657 views

T2 chip on 2018 Mac Mini causes booting Mac OS via Refind bug after unplugging power

Recently received new shipment of T2 2018 Mac Minis at work. I had to install the refind boot picker on them. Install is straightforward and successful but for some reason once I unplug the power ...
chrisdahfuh's user avatar
3 votes
0 answers
828 views

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 ...
thomas Tran's user avatar
3 votes
0 answers
928 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 ...
friderik's user avatar
3 votes
0 answers
28 views

How can I delete all network users on startup or shutdown?

I want to run this script before any student logs into the computers daily. #!/bin/sh mv /Users/admin /admin wait $pid mv /Users/Shared /Shared wait $pid rm -rf /Users/* wait $pid mv /admin /...
Fangoria's user avatar
3 votes
2 answers
350 views

Can an eMac boot from a USB optical drive connected via a FireWire adapter?

I've got an eMac that's mostly working (running Tiger, plus a selection of other nice software), but has a broken optical drive. I have a spare USB optical drive lying around, and it works for most ...
Vikki's user avatar
  • 145
3 votes
0 answers
2k views

sudo trimforce disable not working

Not so long ago, my early 2013 MacBookPro used to boot in a sweet 13s. Since I updated to High Sierra, this has turned into an ugly 58s. I read here and there that the startup slownesses in high ...
sousben's user avatar
  • 131
3 votes
0 answers
685 views

After trying to install Kali Linux I can't access macOS anymore

I've tried to install Kali Linux as dual boot with macOS. I've partitioned 20 GB on the side from 250 GB for that purpose but the installation didn't go as planned. So I decided to reboot macOS and ...
Talaq's user avatar
  • 31
3 votes
0 answers
40 views

Users on boot screen don't refresh

I'm running macOS 10.13 on a MacBook. Users & Groups show me one Current User and a deactivated Guest User: but on the boot screen another user shows up, that I had added and removed a few weeks ...
Patrick's user avatar
  • 1,351
3 votes
0 answers
1k views

Unable to restore iMac

I am somehow unable to restore my iMac from 2011. Someone gifted me the iMac but had his HDD removed. I thus reinstalled a new HDD. After the chime I press Option+Command+R and the network restore ...
farosch's user avatar
  • 131
3 votes
0 answers
273 views

Why does fstab sometimes not work?

I have several boot drives in my Mac Pro, each with different operating systems. Right now, I have Sierra, Yosemite, and Windows 10. I use vifs to edit the fstab file, to prevent other volumes from ...
Elliott's user avatar
  • 3,029
3 votes
0 answers
426 views

What cache files are deleted during Safe Boot?

According to https://support.apple.com/kb/HT201262 a safe boot will perform the following: Verifies your startup disk, and attempts to repair directory issues if needed Loads only required ...
Fyrefly's user avatar
  • 953
3 votes
0 answers
461 views

How to make a bootable (encrypted) copy in an external drive from a FileVault 2 encrypted boot partition

I configured my MacbookPro (Retina) as follows: /dev/disk0 (GUID partition scheme) EFI 200 MiB Apple CoreStorage 128 GiB <- FileVault 2 encrypted Apple Boot 650 MiB <- ...
Ukrau's user avatar
  • 31
3 votes
0 answers
3k views

How to bless a partition using a custom EFI-boot file with non-conforming directory structures and/or file names?

Is there a guide on how to bless a partition for booting, one that doesn't have the default /System/Library/CoreServices/boot.efi structure? For example, I installed GRUB on the default EFI System ...
trusktr's user avatar
  • 1,411
3 votes
0 answers
62k views

Freeze on boot after installing Yosemite

Sorry for the writing style but I am typing from my smartphone now. My MacBook pro on Mavericks worked like a charm but crazy as I am I decided to install Yosemite without any backup as I am lacking ...
Ahn Wooseon's user avatar
3 votes
0 answers
4k views

MacBook does not list my bootable USB stick in the boot menu

I made a bootable USB stick with OSX Lion. When starting up my Mac Mini (which has OSX Mountain Lion installed) while holding option, the USB stick is listed and I can boot from it. But I want to use ...
malfroid's user avatar
3 votes
0 answers
197 views

How can I prevent applications from re-launching at startup?

Using Mountain Lion (10.8.2) on a MBP (13" mid-2009) I have times when applications launch during startup even though they have been exited before the last shutdown. This seems to happen on the order ...
Phillip Mills's user avatar
3 votes
0 answers
773 views

Disable boot from CD/DVD

Is there a way to disable the boot from CD/DVD? I don't want to disable it permanently, just when it automatically checks on boot for the presence of a CD/DVD.
entropid's user avatar
  • 445
3 votes
0 answers
706 views

How to prevent an automatic network share connection at startup?

Problem Synopsis: I have a WiFi router that can connect to a USB storage device and then allow access to that device over WiFi. I had once connected my Mac (OS X Lion 10.7.4) to such a storage device ...
user avatar
3 votes
0 answers
479 views

Launch agents not lauching at system startup

I have several plist files in the folder ~/Library/LaunchAgents. They all have the same permissions but two of them (dotjs and pow) are not launching at login, even if they have the key RunAtLoad set ...
Aliou's user avatar
  • 177
2 votes
0 answers
97 views

How does a Homebrew-installed Emacs get the same PATH variable as set in the shell?

I am running homebrew on an M2 Mac mini under macOS Ventura. I use Emacs.app from the railwaycat/emacsmacport/emacs-mac cask and when I check in Emacs the inherited PATH environment variable, Emacs ...
halloleo's user avatar
  • 1,407
2 votes
1 answer
65 views

macOS booting into Windows Recovery mode after deleting Bootcamp Windows partition

My Mac still boots into Windows recovery mode, automatically. I can still boot into macOS and everything works, however I want to remove this partition. When I first start my Mac it also shows up with ...
Apfel Tasche's user avatar
2 votes
0 answers
291 views

Cannot boot a MacBook Air M2 from an USB drive

I tried installing several macOS versions (Monterey, Ventura, Sonoma) on a Samsung USB-C drive (MUF-256DA) using a MacBook Air M2. I disabled the MacBook's security from the startup options (recovery ...
Tobia's user avatar
  • 209
2 votes
0 answers
52 views

Three beeps on boot attempt, no boot possible (MacBook Pro 2011)

I was using my MacBook normally (just Firefox open). Suddenly the screen froze and it started to beep three times. I switched it off. Now, when I attempt to boot (including in recovery of single-user ...
fabiob's user avatar
  • 121
2 votes
0 answers
30 views

Startup drive missing?

At start up I get the gray folder of death of the flashing?. I have ran the diagnostics test which came up with the message. There may be an issue with storage device reference code: VDH 002. I’ve ...
ballen9471's user avatar
2 votes
0 answers
1k views

Trying to install El Capitan via Bootable USB on MBP 2009 using Windows 10, not showing up

I have recently received a 2009 MBP to use with an old video camera. The MBP has no HDD so I formatted an old windows drive to exFAT and have been trying to create a bootable USB for OSX installation, ...
chrisjw.2165's user avatar
2 votes
1 answer
120 views

Question about macOS Bootcamp

I have a mid-2012 Intel Macbook Air (256GB) which is physically fine. I had bought it second-hand in 2017 & the seller specified that it was only running Windows 10 & did not have macOS ...
Danny1o1's user avatar
2 votes
1 answer
70 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 ...
Delbert Bowers's user avatar
2 votes
1 answer
3k views

Rename EFI boot entries (MacBook Air)

I can't figure out how to rename boot entries on a MacBook Air 2012, i.e. those that appear when holding alt during boot. The problem was initially that my EFI Ubuntu installation could only be booted ...
Andreas's user avatar
  • 2,105
2 votes
1 answer
77 views

iMac displaying abnormal picture shortly after powering on

iMac 27" - Late 2012 Model# A1419 Customer said they had the motherboard previously swapped out at another repair shop. Displays abnormal picture with lines running vertically and horizontally. ...
clayton bivens's user avatar

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