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237 votes
Accepted

What is this qemu-system-aarch64 process and why is it using almost 3 GB of RAM on my M1 Mac

This process belongs to an application you've installed yourself. To find out more, select the process in Activity Monitor and press Cmd-I to open the Process Information window. You should see the ...
nohillside's user avatar
  • 101k
158 votes

What is this qemu-system-aarch64 process and why is it using almost 3 GB of RAM on my M1 Mac

It was Docker for Mac! There is no clear name indication that this is a Docker process, so you can't clearly spot it in the Activity Monitor unless you use View -> All Processes, Hierarchically or ...
50 votes

Force the resolution on a headless mac mini server

Simplest solution (for macOS versions prior to Catalina): Just hold the 'Option' key while you press on 'Scaled' button in the display settings in system preferences. This will bring up all available ...
Angel Kjos's user avatar
39 votes

Is it bad to keep running a Mac mini for a week?

No, that's not bad in any conventional manner. I run Mac Minis for months and years without powering them off (except the occasional reset for security updates).
jksoegaard's user avatar
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30 votes
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Is it necessary to shutdown and unplug the power cord of Mac Mini every night?

While there are many opinions on what you should do and when you should do it there is no technical reason why you need to unplug your Mac when shutting it down at night. In fact you don't even need ...
Steve Chambers's user avatar
26 votes

"powerd" process uses a lot of CPU

sudo pmset schedule cancelall fixed it for me. After updating from macOS Ventura beta 3 to beta 4, powerd was using 100% CPU even after restarting it. pmset -g log repeatedly printed 2022-07-28 23:54:...
grg's user avatar
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25 votes
Accepted

Is it safe to stack Mac minis on top of each other?

In How to position your Mac mini, Apple, perhaps being overcautious, say not to: Don't put anything on top of your Mac mini or stack Mac minis on top of each other either. If your Mac mini is ...
lx07's user avatar
  • 3,094
19 votes

High Sierra - The path /System/Installation/Packages/OSInstall.mpkg appears to be missing or damaged

Same error happened to me when I received an update from 10.13.1 to 10.13.2. If you boot with shift button pressed, you will be able to enter safe mode and try to download and reinstall an update. It ...
Kirill's user avatar
  • 519
18 votes

Is it safe to stack Mac minis on top of each other?

I use an IKEA 7-inch trivet underneath my Mac mini to improve ventilation. That might help between stacked Mac minis :
benwiggy's user avatar
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16 votes

Is it safe to stack Mac minis on top of each other?

I wish I had a picture for absolute proof, but at one point we stacked up 5 Mac minis for several years running two FirstClass email servers, an OD server, and two file servers. They were in a well ...
IconDaemon's user avatar
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16 votes

Is it bad to keep running a Mac mini for a week?

We've been using about 15 Mac Minis as a production servers for 8-10 years. They regularly kept 60-70% CPU for a good part of the workday and also ran maintenance/backup tasks at night. None of them ...
fraxinus's user avatar
  • 371
15 votes

High Sierra - The path /System/Installation/Packages/OSInstall.mpkg appears to be missing or damaged

The easiest solution is the one by commenter Michael Buen. It has worked on 20 Macs I've seen have this issue. Apple Menu -> Select Startup Disk -> Restart (after clicking your boot drive) resolves ...
cloneman's user avatar
  • 417
14 votes
Accepted

Wirelessly debug Safari web app running on iOS using Safari on macOS

Follow the instructions below one by one: On your iOS device, go to Settings app → Safari → Advanced and enable the switch for Web Inspector. On macOS, launch Safari and in the Menu bar, go to ...
Nimesh Neema's user avatar
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14 votes
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Installing a C/C++ library with homebrew on M1 Macs

Add an environment variable as follows export CPATH=/opt/homebrew/include export LIBRARY_PATH=/opt/homebrew/lib to the file corresponding to the shell, like ~/.bash_profile for bash. Alternatively ...
anki's user avatar
  • 11.8k
14 votes

Is it necessary to shutdown and unplug the power cord of Mac Mini every night?

As a general rule, you don't need to unplug your computer if your electrical installation and power supply provide power which complies with standard power quality rules. However, if you have low ...
juandesant's user avatar
12 votes
Accepted

Set Mac mini to be constantly on and logged in

There are a few built-in settings in macOS and a 3rd party app that you should be looking at: Under System Preferences → Energy Saver → Power Adapter, enable Restart after power failure. Turn on ...
Nimesh Neema's user avatar
  • 51.9k
11 votes

External hard drive knocks out wifi Internet

If one of your external drives is connected using USB 3, then this is most likely the culprit. If the shielding has degraded on the USB 3 cable then it can interfere with your wi-fi. If you external ...
KarlC's user avatar
  • 1,323
11 votes

High Sierra - The path /System/Installation/Packages/OSInstall.mpkg appears to be missing or damaged

This is what worked for me, based off of this post: https://medium.com/@aeronode/how-i-fixed-my-non-booting-macos-high-sierra-installation-45d238b78c3d Restart in recovery mode (Cmd-R), Utilities -> ...
Oscar Barrett's user avatar
11 votes

High Sierra - The path /System/Installation/Packages/OSInstall.mpkg appears to be missing or damaged

I had the same error - turned out to be a disk space error. Opened up terminal from the recovery screen where it was asking me to reboot and cleared out several gigs of VMs and it worked after a ...
0xTim's user avatar
  • 211
10 votes

How to limit RAM in an OSX device?

Create a ram disk :-) From the answer to Mount a RAM disk on boot: You can create and mount a RAM disk with the following Terminal (i.e. shell) command: diskutil erasevolume HFS+ "diskName" ...
nohillside's user avatar
  • 101k
9 votes

Newbie Mac user - how to start over with Mac mini that has Windows installed

The easiest way to tackle this is to treat the Mac mini as if it had a blank drive and you needed to (re)install macOS from Internet Recovery. Install OS on iMac with blank hard drive is a post that ...
Allan's user avatar
  • 102k
9 votes
Accepted

Compare between Apple Mac computers

Apple's official website has a compare section for Macs where you can compare between three different models of Mac simultaneously. You can access it by going to the following link: https://www.apple....
Nimesh Neema's user avatar
  • 51.9k
9 votes
Accepted

Can I know the technical specifications of a Mac mini without an OS?

You’ve got a few options here: Lookup the machine exact hard drive capacity by entering the serial number on the Every Mac website. Boot the Mac Mini while holding down the ⌘ CommandR keys to enter ...
Gerard de Jong's user avatar
8 votes
Accepted

Installing Ubuntu 16.04 server on Mac Mini 2006

Alright, I see you've added some requisites to your answer. Here goes. Part 1: Install Ubuntu 16.04 Server. Download this. (Ubuntu Server 16.04 32-bit) This is done the same way any other Linux ...
ThePCpenguin's user avatar
8 votes

USB keyboard and USB mouse with Mac mini

Apple's Mac mini is the "budget" line of computers and actually does not come with a mouse and keyboard and instead, Apple tells you to "bring your own". From the current (2017) product page on Apple....
Allan's user avatar
  • 102k
8 votes

How can I find the serial number of my Mac mini?

Yes. They come with unique serial number. You can find the serial number as per Apple Support Document. Mac mini: How to find the serial number In Mac OS X On most computers with Mac OS X, you can ...
Pratik's user avatar
  • 2,478
8 votes
Accepted

How many hard drives are in this Mac mini?

Possibilities are: There is no second drive There is a second drive that is undetectable because faulty or badly connected You can find out which it is by simply opening the black plastic bottom and ...
Lars A. Gundersen's user avatar
8 votes

How many hard drives are in this Mac mini?

You have one drive. Your diskutil list command tells you everything you need to know: there's only one entry that has a "physical" characteristic to it and it's disk0. When you boot into ...
Allan's user avatar
  • 102k
7 votes

Restart Screen Sharing Service on Mac mini Server

Using launchctl unload and launchctl load still works but the commands are now "legacy commands". Here's a more recent approach that also works with a single command: sudo launchctl kill KILL system/...
Adrian's user avatar
  • 229
7 votes
Accepted

Black or displaced screen when screen sharing headless mac mini on macOS 10.12

These are solutions that I found but that do not work for me: UPDATE: The issue finally and miraculously disappeared after updating to macOS 10.12.4. If you run third party applications, such as ...
n1000's user avatar
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