Questions tagged [imac]

iMac, a range of all-in-one Macintosh desktop computers from Apple

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Mac OS forgets 2nd display

MacOS Catalina, 10.15.6. iMac27 late 2012. I have connected two external displays to my iMac and it often works quite well for a long period of time, but then suddenly, after waking from display sleep ...
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25 views

Damaged iMac Display - Any Solution for Grey Vertical Column Lines?

After replacing a Fusion Drive with an SSD, it must have damaged my display. Now, there is a column of grey on the left-hand side. I double-checked the cables, and they are snug. Probably damaged ...
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Which exact CPU models are used or can be used in the iMac Pro?

The iMac Pro's CPU is upgradable, but documentation on this seems scarce. I found out that the top end 18-core CPU is a Xeon W-2195. Which other CPUs are supported? I could try to find which Xeon-W ...
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4answers
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Change brightness on iMac in target display mode

Recent iMacs support a "target display" mode, where you can connect another Mac using a DisplayPort cable, and the iMac will function as an external monitor. This used to work fine, however now if ...
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40 views

File don't show with “ls -a” but was detected by Malwarebytes

On the terminal, I search for the file com.pplauncher.plist on the directory /Library/LaunchDaemons/ through the command ls -a, but such a file wasn't found. Later, I installed Malwarebytes and ran ...
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How can I get my Mac to use the full resolution of my external monitor? “UI Looks like” half resolution

I added an external monitor to my iMac (Retina 5K, 27-inch, 2017, running Mojave), and the results have been pretty disappointing. When I open "System Report:", I see these lines under ...
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1answer
24 views

iMac mid 2011 T2 secondary heatsink heating up

My iMac mid 2011 started heating up about a year ago to the point that the hard drive broke and had to be replaced. I managed to replace the hard drive and I also replaced the power supply module as I ...
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1answer
19 views

iMac mid 2011 reboots when connecting an external display

I'm new to apple, and finally got my second hand iMac booted. I try to connect an external display to the iMac with an mini display port adapter. I have 2 adapters, 1 does nothing, the other makes my ...
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33 views

I can't make bootable USB on 2008 iMac 2008 running El Capitan [duplicate]

I have 2008 iMac and OS X El Capitan on it. I will make bootable USB drive for my friend, but I can't. I format my USB as Mac Os Extended and GUID parition map, then I downloaded InstallMacOSX.dmg ...
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Can't load OSX after installing Boot camp

My bootcamp installation seems to have failed and I can't get back to OSX by holding option key on my wired keyboard for iMac at reboot. What else can I do? Please help.
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iMac mid 2011 doesn't boot [duplicate]

I have a problem with a iMac mid 2011. It doesn't boot anymore. When booting, you only see a folder with a question mark, that's it. Troubleshooting done: boot from the same HDD on another iMac mid ...
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1answer
4k views

Prevent internal drive from mounting automatically

I don't use the internal hard drive on my iMac any more, but for obvious reasons, it's awkward to remove it. I'd like to stop OS X from automatically mounting it when the iMac boots. Is this possible? ...
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2answers
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Can you programatically tell if the webcam is in use?

I'm trying to run some commands when I start and stop using the (built in) webcam on my 2015 iMac running Catalina. It sounds like historically lsof | grep "AppleCamera" would once tell me ...
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1answer
40 views

iMac locking immediately after remote connection via Anydesk or Chrome Remote

I upgraded my iMac Late 2013 to Catalina. When I login through Anydesk or Chrome Remote Desktop I see my desktop for a split second and then im presented with the lock screen again. While Anydesk is ...
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2answers
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How does a 4K Retina display 'double up' the pixels?

I did the following experiment on a 21.5 retina display: Open Pages, and write some lines with Courier New at point size 4, 3, 2 and even 1. Use default screen 2K High Resolution and then set view to ...
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Reattaching microphone on iMac 21.5" 2017

After reassembling a 21.5" 2017 Retina iMac (and being careful that the adhesive strips on the bottom don't block the mic), I noticed the microphone was extremely muffled. The delicate mic cable ...
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2answers
59 views

iMac has two internal drives, what is the best setup? [duplicate]

My iMac (Retina 5K, 27-inch, 2014) has a permanent internal 120GB drive on the main board and I just added a 2TB SSD internal drive as well. I'm essentially starting over with a clean system. I'm ...
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1answer
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iMac 2017 Catalina: camera won't work but seems recognized

Our camera light is steady green when activated by a camera app but only shows a black window for FaceTime, Photo Booth, QuickTime, and every other app tried. This is what I've learned/tried so far: ...
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1answer
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Why is my 2016 iMac “Beach Balling” a lot after upgrading hardware?

I purchased this system in January, 2016. It says it is a "Late 2015" model. Apple Care told me it is the last generation compatible with non-matching RAM chip amounts so I left the Apple ...
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1answer
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Linking MacBook Pro and iMac as single system

As I’ve moved to working from home during quarantine I’ve found myself in a bit of a situation which I’m hoping you can help me out with. Traditionally I have one workstation (a MBP connected to an ...
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5answers
5k views

How can I adjust brightness of 3rd Party external monitor on iMac, Macbook or Mac Pro via keyboard?

Apple stopped Thunderbolt display and Cinema display line. Recently announced an ungodly expensive 'reference monitor' beyond the need and budget of most people. For my iMac, I bought two Apple-...
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1answer
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iMac in recovery mode, can’t install macOS no matter what I try

My wife and I purchased an desktop iMac A1311 from Facebook market place. It was perfectly functional but the seller hadn’t removed any of their personal info before selling it so my wife erased it (I ...
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Recover after ssd upgrade

27” IMac crapped out with no recent backups. After research settled on it was hard drive related. Swapped out hard drive for ssd and can get to Os Catalina screen where I select the ssd to install the ...
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My computer consistently crashes while trying to batch export my photos from my Photos app to a folder

I'm trying to download my photos from the Photos app to a folder on my computer (iMac 2019). However, after some time, the Photos app ends up crashing and I have to restart the download process. ...
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2answers
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Bluetooth and wifi stopped working

Yesterday suddenly the bluetooth and wifi stopped working, while iMac was on and on screen saver. I have tried several restarts and tried to follow the bluetooth debug and reset options as well as SMC ...
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31 views

My iMac wont boot up

Need some help please, my iMac (A1224, OS X EL CAPITAN) wont boot up, for some reason ⌘ Command R doesn't work, which leaves me with single user mode. I tried fsck but I'm getting the error below, I ...
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1answer
13 views

Lost disk space after removing bootcamp [duplicate]

Apologies if this has been posted before, but none of the cases seem to match mine exactly and I don't want to mess anything up. After removing my bootcamp partition I am missing about 250Gb from my ...
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3answers
18k views

Connect my 2015 Macbook Pro to my 2019 iMac as an external monitor

I have a 2015 Macbook Pro (Thunderbolt 2 port) for which I would like to use my iMac 2019 (USB-C Port) as an external monitor. What type of adapter and cable should I buy to make this work?
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3answers
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I'm taking my 2010 iMac in for SSD installation. What is best way to secure my iMac?

I have a mid-2010 iMac running High Sierra and I'm taking it to a local shop to get my fusion drive replaced with an SSD. I of course have sensitive info in the Notes App and elsewhere on my computer. ...
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0answers
20 views

Booting iMac from External SSD & UASP support in iMac, Docking station or USB to Sata Adapter?

I have Late 2013 iMac which has 5400 RPM HDD and I find it really slow. So, I purchased a Crucial MX500 SSD. I have now cloned my HDD to SSD using superduper and then booted from it. It worked. But I ...
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Need help, tips, suggestions on downgrading Catalina to Mojave and dual-boot [duplicate]

iMac 21.5-inch, 2019 Shipped with Catalina Goal is to have two volumes. One with Catalina, the second with Mojave. I have already downloaded Mojave and plan to create a bootable drive using disk ...
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1answer
4k views

What are the requirements to use iMac screen as a second monitor?

I have a Surface Pro 4 and an iMac (late 2019). I would like to connect my Surface Pro to the iMac to use the iMac screen as a second monitor. Is that possible? What are the requirements to use an ...
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How to use iMac (27-inch, Late 2013) as a second monitor for Macbook Pro (13-inch, 2020)? [duplicate]

I bought Thunderbolt 3 (USB-c) to Thunderbolt 2 by Apple and Thunderbolt Cable (0,5m). Cmd+F2 doesn't work for me. I guess it's just because Apple now prevents to use old iMacs as monitor with new ...
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3answers
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iMac occasionally gets very sluggish. Memory Pressure is high and its hard to use computer. Why is this?

I have a mid-2010 iMac running High Sierra. It has started getting very sluggish several times a week. I have tracked it down to the memory pressure and the process kernal_task. Shown below is a ...
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1answer
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How do I fix small gap at top and on the left of iMac display?

I have an iMac mid-2010 (11,3) that is showing a small gap at the top and left side of the screen in the built-in display. It is almost like the screen position is off, or the display is not being ...
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6answers
2k views

High memory usage on iMac MacOS Catalina

I'm not a Mac power user by any stretch of the imagination, but I'm hoping for some help from someone here that is. There are similar questions being asked, but the answers seem to all be similar... ...
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3answers
3k views

3 Monitors in a row and I want the dock in the middle

I have an iMac 27 inch with a 22 inch monitor to the left and a 23 inch monitor to the right. I want the dock to be in the middle and want all monitors to be arranged from left to right. I keep my ...
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2answers
690 views

Target Display Mode not working on MacBook Pro 13" 2020

I am using a 2011 iMac as an external monitor (and speakers) for my MacBook Pro (2014) on a daily basis. Last week, I upgraded to the 2020 MBP 13". The new MBPs with USB-C are supposed to work with ...
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0answers
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MBP & iMac - FacetimeHD green light but black screen

My question: My Macbook Pro (2017) and iMac (2012) both seem to have a problem with the FacetimeHD camera: the green light turns on, but I get a black screen in all video apps like Zoom, Facetime and ...
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3answers
1k views

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

I have a really slow iMac that I bought 2 years ago. I've been so annoyed about how I have to wait for the rainbow circle to stop loading. I did some research and found out it's about the hard drive. ...
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3answers
52 views

Sharing serial number to a potential buyer?

I am selling my iMac over Facebook and a potential customer is asking for serial number. I am not really comfortable with the fact to share with him but do not know what will happen if I do or why he ...
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3answers
5k views

Backup and Sync has encountered a fatal error, and will now terminate. Mid 2011 iMac - High Sierra

I recently updated my 27in Mid 2011 iMac to a 1Tb SSD HD and to High Sierra. Now I don't have access to my Google drive :( I've been looking everywhere and have found no solution to this. Can anyone ...
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5answers
116k views

iMac FaceTime HD camera shows no image/black image

There's an iMac whose FaceTime HD camera isn't displaying video images in applications like FaceTime, Photo Booth, or QuickTime video recorder. OS X El Cap shows that the camera is attached and ...
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1answer
35 views

Why is it that my 2014 MacBook pro faster than my 2017 iMac [closed]

My MacBook is old and overheats a lot, and my iMac is new, has 4k resolution, a quad core CPU, but it's slow. The main difference is that my new iMac has a 1TB HDD, and my old MacBook has a 128GB SSD. ...
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2answers
6k views

How can I modify Boot Camp Assistant so it can use bootable USB?

I own a 2011 21,5" iMac, and I need to install Windows to run some software that is Windows only. I have done this in the past by altering Bootcamp assistent so it can use bootable USB drives, which ...
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1answer
54 views

Erratic cores usage

My machine specs: iMac (Retina 5K, 27-inch, 2017) Processor: 3.4 GHz Quad-Core Intel Core i5 Memory: 16 GB 2400 MHz DDR4 Graphics: Radeon Pro 570 4 GB Very recently I have started ...
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2answers
4k views

Audio not working on Windows 10 installed on external SSD running on iMac

I installed Windows 10 (April 18 update) on external SSD drive that can be selected on the iMac's startup. Run the Boot Camp Windows Support Software and everything is fine, Apple mouse & keyboard,...
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0answers
9 views

Hibernate or StandBy mode for no reason

I'm stuck to find the reason my iMac is sometimes entering in Hibernate (or standby) mode. Here is my configuration: OSX version: macOS Mojave (but I have this issue with the previous versions too), ...
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5answers
27k views

Microphone / Headphones combo port does not work in BootCamp

I have an iMac (27-inch, Late 2013) that has a 4-pole TRRS headphone/headset combo port. On OS X any headset works nicely (e.g. the Apple iPhone headset with microphone). On Windows 7 64bit with ...
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iMac Mouse Stuck in Scroll Mode

Thanks in advance for anyone who can help. My 2009 27" iMac suddenly starting having mouse issues, rendering it almost unusable. The best way to describe it would be as if the mouse were ...

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