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47 votes

iMac FaceTime HD camera shows no image/black image

I have had this problem in the past. I found my answer here. http://osxdaily.com/2013/12/27/fix-there-is-no-connected-camera-error-mac/ Open terminal from the utilities folder in the applications ...
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45 votes
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My Mac repeatedly beeps three times on startup. What does this mean?

No, your Mac is not possessed. And Yes, it’s trying to tell you something! A looping three beeps in between three seconds during startup is your iMac’s way of telling you that the operating system ...
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39 votes
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Is it possible to use my Mac to mine Bitcoins?

Short answer Is it possible? Yes. Will the benefit outweigh the costs? No. Long answer Without going into a lot of detail, and at the risk of oversimplifying things, in the early days mining ...
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38 votes
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How to charge MacBook Pro quickly from an iMac?

This cable costs $39 retail. At this price I am expecting better performance for charging than what I'm getting here. How could I diagnose this issue? There's nothing to diagnose because ...
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  • 81.6k
34 votes

Does unlicensed Apple hardware damage a late 2015 iMac?

Mice are mice. Any USB mouse will be fine. If that mouse has more than two buttons and a scrollwheel, you may need software to use all of its features, so look for a manufacturer that provides ...
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  • 3,915
30 votes

How to stop iPhone from listing iMac as audio source during phone call?

On your iPhone, go to Settings > Phone > Calls on Other Devices > un-check the Mac. Then switch off the "Allow Calls on Other Devices" toggle switch and restart the phone. Also worth mentioning: ...
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  • 573
27 votes
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iMac with 8GB RAM -- memory always almost full

Because OSX manages memory (as does Windows) it is often difficult to tell if performance issues are caused by memory limits. Technically, you really want the OS to capture all the available memory ...
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26 votes

Put the display to sleep without putting the whole computer to sleep?

In Terminal.app: pmset displaysleepnow https://developer.apple.com/legacy/library/documentation/Darwin/Reference/ManPages/man1/pmset.1.html This also works for the lock and sleep functions: pmset ...
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22 votes
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Can I compile .NET C# code on my Mac?

Check out the Mono Project. It may be what you are looking for. http://www.mono-project.com/Mono:OSX MonoDevelop is a cross-platform IDE primarily designed for C# and other .NET languages. ...
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  • 563
22 votes

Does unlicensed Apple hardware damage a late 2015 iMac?

While it is certainly possible to hook up hardware that can damage a computer, that's nothing specific to Macs, it's specific to that hardware. And usually that's because you're hooking up something ...
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  • 429
20 votes
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Do LAN transfers use both Ethernet and WiFi by default?

Do LAN transfers use both Ethernet and WiFi by default? No. The default action is to use the one with the highest priority. This is usually done by the order of the interfaces that you specify in ...
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19 votes
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Changing sublime text 3 icon in dock on Yosemite

Here is a easy way to change the icon. Remove Sublime Text from your dock. Open two finder windows. One with Applications and one in the folder with the new icon. Like so: Then click on Sublime ...
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19 votes
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Play/Pause/Prev/Fwd buttons not working

I found this to solve the problem for me, thanks to Major Hayden! ...check your keyboard shortcuts in Chrome: Choose Preferences in the Chrome menu in the menu bar Click Extensions in the left ...
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  • 306
19 votes
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How Do I Remove Remote Disc from Finder (not in the Sidebar)

To remove: Launch Terminal Enter the following string: defaults write com.apple.NetworkBrowser EnableODiskBrowsing -bool false Enter the following string: killall Finder The icon should now be ...
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  • 3,202
19 votes
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What is this black bar at the bottom of my Dock?

Occasionally the progress bar that appears under the downloads folder does not go away as it should when the download completes. You should be able to remove it by simply restarting the computer or ...
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18 votes
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Can I share my iMac's internet connection via ethernet

You sure can! Open System Preferences, then go to Sharing and select Internet Sharing. Change "Share your connection from:" to Wi-Fi, and then in the box below it select Ethernet.
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  • 2,203
17 votes

Recent items menus have stopped working on my iMac

For me, this partially fixed things: Close all open apps. Move ~/Library/Preferences/com.apple.recentitems.plist (and ~/Library/Preferences/com.apple.recentitems.plist.lockfile if it exists) to a ...
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  • 271
16 votes
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How to examine disks and their partitions via terminal?

Examine with diskutil list diskutil info /dev/disk0 (disk0s1 etc.) sudo gpt -r show disk0 fdisk /dev/disk0 (make/change partitioning with MBR) sudo gdisk -l /dev/disk0 (make/change partitioning ...
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  • 853
16 votes
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Do USB-C to Thunderbolt 2 cables exist?

You're not going to find a Thunderbolt 3 to Thunderbolt 2 cable as an adapter is required to connect to legacy devices. One of the (major) differentiators between Thunderbolt 1/2 and Thunderbolt 3 is ...
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  • 81.6k
15 votes

How do I stop my computer name from automatically, and incorrectly, changing?

Workaround Like other users, I'm plagued by this annoyance but have found a semi-satisfactory workaround: my_hostname='your-hostname-here'; for key in LocalHostName ComputerName HostName ; do sudo ...
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  • 1,172
15 votes
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How can I speed up my new (but slow) 2017 iMac?

Why does it feel so slow? Your iMac has a 1TB 5400rpm SATA Hard Drive and this is what’s causing the bottleneck. Your mid-2010 iMac would have had a 7200rpm Hard Drive. To fix this you really need to ...
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  • 62k
15 votes

Do USB-C to Thunderbolt 2 cables exist?

I don't think a straight-up cable exists, no. However, you can get an adapter/dongle that works perfectly well for your scenario. You'll need to Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 adapter: ...
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14 votes
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Really confused about how to reset SMC and PRAM and NVRAM on my Macs and iPad and iPhone?

Sorry to hear you’re having problems. I hope the following clarifies things for you, but if these instructions do not help, you can always post specific questions about any problems you’re having. ...
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14 votes
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How can I adjust brightness of 3rd Party external monitor on iMac, Macbook or Mac Pro via keyboard?

I have been using Monitor Controll - https://github.com/the0neyouseek/MonitorControl - for a couple of months now with a Dell screen, and I have only words of praise.
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  • 293
12 votes

Screen flash disabled but happens anyway

In a similar situation, I was about to give up and reboot, but then I found that restarting the audio daemon resolves the issue: sudo killall coreaudiod The symptom was: in the "Sound Effects" ...
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12 votes

Can I compile .NET C# code on my Mac?

You can install it with homebrew: brew install mono Then you can use it with: mcs hello.cs mono hello.exe
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12 votes
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Resetting PRAM without a(n) (Apple) keyboard?

You can recreate the NVRAM reset's ⌘-⌥-P-R with a PC keyboard by pressing: Windows Key + Alt + P + R
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  • 185k
12 votes
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Harmful to never put to sleep / shut down a mac?

You can safely leave your Mac powered on all the time. Safe and Harmless There is no practical damage or harm that will occur because the Mac is constantly running. Use your Mac as best suits your ...
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  • 40.1k
12 votes

How to control fan speed in macOS Sierra?

I am a firm believer in avoiding software "hacks" to fix hardware issues. To fix this problem, you need the sensor. Unfortunately, as you have found out, your SSD doesn't support this connection. ...
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  • 81.6k
12 votes

How do I make an HDD as fast as an SSD?

I'm afraid that's impossible. Your hard drive is essentially not much different from an old record turntable: it has spinning disks and a 'head' that writes or reads the magnetic stripe at a point on ...
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