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

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iMac 5K able to fully restored after power loss

This afternoon, a thunderstorm cause my house's circuit breaker to cut off all the power of my house, my iMac was in sleep mode, I then unplug the power cord from power outlet of my iMac just for ...
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2answers
31 views

How to reinstall OS X on an iMac which only has Ubuntu installed on it?

I have a 2011 iMac with only Ubuntu installed. It's not a dual-booted iMac, it only has Ubuntu installed. How do I revert back to original OS X and remove Ubuntu? I've tried pressing various keys (⌘ ...
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1answer
15 views

headset plugged in via Y-adapter and extension cable stopped working

I own a late 2013 iMac 27". The following setup worked for months until yesterday: The 3.5mm port is connected to a Y-Adapter, the adapter let me use two headsets at once. I use my headset and my ...
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1answer
17 views

Mac turns off randomly and has lines on screen

For some reason my iMac keeps turning off around 5 to 10 minutes into boot. Also just recently it turns on but has shaded lines going down the screen. I have not installed any weird programs and i ...
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1answer
19 views

Cannot create new user in Single-user mode

I try to create new user using the following commands: /sbin/fsck -fy /sbin/mount -uw / launchctl load /System/Library/LaunchDaemons/com.apple.opendirectoryd.plist dscl . -create /Users/username ...
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16 views

Transferring one user only from an old iMac to an existing iMac with other active accounts

The hundreds of help pages on Migration Assistant mostly talk about migrating to a new Mac. However, my wife and I each have our own existing iMacs (both running El Capitan), and each with only our ...
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10 views

Auto-correct on my iMac is checked so why is it not working in Apple Mail?

"Correct Spelling Automatically" box is checked in Keyboard settings. "Check Spelling As I Type" is checked in in Mail preferences. With the proper boxes checked, why is iMac Mail not correcting ...
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2answers
24 views

Magic mouse does not switch ON

I have been using the magic mouse for two years. I always slide off the switch under the mouse after the mac shuts down as I have seen it to save battery life to some extent. Since a week the mouse ...
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1answer
24 views

Repeated requests to update icloud preferances

I keep getting requests to update my iCloud preferences. I do so by reentering my password the the requests keep coming
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1answer
15 views

27 imac Late 2012 HDD Failure

The HDD on my 27 imac Late 2012 has died. Is it replaceable? At present, I switch on (soundless) and get the white screen which loads up one third and then freezes. I tried Disk utilities which told ...
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1answer
10 views

Contacts from Address Book Disappeared

I just installed El Capitan (I used to have Lion OS X), and I lost my address book. So I googled about it and I can restore them from my time machine. I did that but the file can't be opened in the ...
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1answer
20 views

Mac — HDMI to USB/Thunderbolt

I know there are small USB boxes which are able to pass through image from HDMI (and record it) to computer. Is there something similar which would enable me to see stuff from HDMI on my Mac? Why: I ...
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110 views

'the 'grub-efi-amd64-signed' package failed to install into /target/' during Linux Mint installation on an iMac

I have a Mid 2007 iMac, I've installed rEfind on the mac and the Linux Mint (Cinnamon 17.3) installer on an USB thumb drive . rEfind sees the USB thumb drive, sees grub installed on the key, I boot ...
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12 views

Downloading miniDV from Canon to iMac

I can't figure out why I cannot import video from my Canon ZR850 onto my iMac. I have a DV-400 cable that connects to a FireWire 400-800 adapter that connects to an FireWire 800 to thunderbolt ...
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2answers
27 views

Can a 21.5 inch iMac (non-Retina late 2015 - 2.8 Ghz, Intel Iris Pro graphics, model 16,2) drive two external displays?

I'm currently running a Dell U2715H at its native resolution (2560 x 1440) via DisplayPort as an external display, and I'd like to add another at that same resolution. The Apple specs on this model ...
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1answer
25 views

OS X partially freezes

I have a 27-inch, late 2012 iMac. After I upgraded to El Capitan the user interface (UI) partially freezes at apparently random moments. Parts of the UI continue to work (e.g., I can close ...
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1answer
23 views

iMac (mid 2010, 27") minimum ram slots required to fill

Can I use only two 8 GB RAM modules with my mid 2010 27" iMac (2.8 GHz Core I5)? In other words, do you have to fill all 4 memory slots or are 2 filled slots sufficient?
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21 views

Desktop Mac Extremely Hot Running as External Display

I have a late 2009 iMac that I use as an external display for my mid 2014 Macbook pro. Everything works great except the iMac runs extremely hot to the touch, close to burning if you had your hand ...
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1answer
55 views

Using an iMac 27" as an external monitor for a PC

I have a Dell computer running Windows 10 and it have 3x DisplayPort and 1x vga outputs. I want to connect my iMac Core i5 27-Inch (Late 2013) as an external monitor to the dell pc. Can I buy a Mini ...
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2answers
35 views

iMac (Late 2015) using swap when there's still plenty of RAM left

My wife's new iMac is behaving rather oddly. Despite being a pretty powerful machine, it's rather slow and laggy. I looked into it, and it seems her swap memory is maxing out, even though there's ...
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15 views

Xcode is shutting down network access on my iMac

This is really strange. I'm running OS X 10.11.4 with all updates in place on a 2010 iMac. I am using Xcode 7.3 for iOS development. When I build and deploy my iOS app to any iOS device through ...
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38 views

Boot Camp - frozen during hard drive partitioning - iMac 27” w/ 3TB Fusion Drive

(iMac 27” late 2012, 3.4GHz, 3TB Fusion Drive, running El Capitan 10.11.4.) I've gone through the Boot Camp Assistant steps with all of the recommended options (created a bootable Windows flash ...
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30 views

iMac - Midi controller disconnects

So I have recently bought an iMac for my music setup in which I have (amongst other things) a midi controller (M-Audio Oxygen 88) connected. I am experiencing a problem where at random times and ...
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17 views

Problem with bitmaped and vectored graphics

I have a 2009 iMac with El Capitan (10.11.4). I have recently discovered a very subtle problem with both bitmap and vectored graphics. With bitmaps, while making fine adjustments to shapes using ...
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1answer
30 views

Targeted Display Mode using Henge Docks Vertical Dock

I have a 2012 MacBook Pro with Retina Display and a Late 2012 21" iMac. I just purchased a Henge Docks Vertical Dock, to use at home, and the plan is to pop my MacBook Pro in and then use the iMac in ...
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33 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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1answer
25 views

21.5 inch retina iMac used as external monitor [duplicate]

I am thinking of purchasing this little fella http://www.apple.com/shop/buy-mac/imac?product=MK452LL/A&step=config# and (also) using it as an external monitor to my MacBook Pro (mid 2014). Is it ...
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37 views

iMac A1208 - Mac OS X 10.4 Install Problem

I'm a French user and I have a iMac from 2006/2007. I have changed the logic board. It's ok, but i want to do a fresh install of OS, (10.4), but the optical disk is KO. I have the official CD (but it ...
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1answer
127 views

After El Capitan update, I cannot sign in to anything with my Apple ID: '“This action could not be completed. Try again”

I updated OSX last night to El Capitan and after the update, and restarting my iMac(2014) a few times, I cannot sign in with my Apple ID. The initial restart gave me the error: "This action could ...
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1answer
37 views

How to use iMac mid 2010 (21.5 inch display) as monitor

I have a late 2014 macbook pro, and i am trying to use my 21.5" iMac as just a display via the thunderbolt cable. But it doesn't seem to be working, what do I need to change to do so?
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79 views

SD card won't mount (late 2009 iMac running OSX El Capitan)

I am hoping that someone can help me diagnose and fix a recurring problem. When I insert a card into the SD card slot it does not read the card or register that a card has been inserted in any way. ...
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51 views

Is it possible to mirror 2.5K or 5K iMac display to 1080p TV through Apple TV without swithcing iMac's resolution?

I have a 27" iMac with 2.5K built-in display resolution. Also i may replace it with a 5K/retina one. The problem is mirroring it's display without changing my mac's resolution other than it's native ...
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1answer
23 views

Why is this stock iMac so slow at launching apps?

I bought a refurb iMac from apple.com: 21.5", late 2013 2.9 GHz Core i5 8 GB DDR3 Geforce GT 750M 1024 MB 1 TB SATA Disk No SSD, but this should still be performing well for basic tasks. It's ...
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18 views

iMac 27“ 5K vs Television 50” for watching 4K movies

I own a 5K iMac 27". I like very much watching 4K movies on it. Is the quality significant better (and why exactly) when buying a 50" television with 4K support? Can you explain me why? I seems people ...
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1answer
15 views

Is there a way to move all windows back to the iMac (from HDTV)?

My iMac is hooked up to an HDTV, and sometimes I move windows over to the HDTV. But sometimes, my HDTV is not powered on, or it is set to the cable box, and I can't find the windows (apps) on my ...
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1answer
26 views

Should I format my iMac?

I have an iMac 27inch from 2009 running El Capitain at work. It was used by other people before I came in working for this company. It seems a bit on the slow side comparing to my home PC. Would ...
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1answer
34 views

iMac 27' powering off without reason

I have been the owner of an iMac 27' for the past 3 years. I have had the problem of the machine automatically powering off (for no reason at all) since almost day 1. After trying everything, ...
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15 views

migrating to 250GB SSD, need to dump local Photos

I just purchased a new iMac with 250GB Flash storage, and need to dump some media on my old desktop to make the Time Machine backup fit onto the new Flash drive. I have a 200GB iCloud plan, and all ...
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0answers
40 views

How to remove all traces of an Apple Id from a Mac

If I go to the System Preferences and select iCloud, it prompts me to sign in with my Apple Id. Only problem is, it auto-fills the Apple Id of the previous user. If I try to delete the existing id ...
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0answers
119 views

Is there an app/extension similar to The Great Suspender but for Safari?

Safari is sucking wind lately, for me. I have a new 1TB hard drive in my system, put in Jan 2016. For Chrome I use Great Suspender extension - it halts tabs/sites after not being used for a while. ...
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1answer
80 views

Magic Mouse 2 and Magic Keyboard not able to connect on reboot

I've just gotten a new iMac 27" 5k (Late 2015). Works great, apart from one minor, yet annoying issue. Whenever I reboot, it seems bot my mouse and keyboard are not working once presented with the ...
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2answers
45 views

How do I input ^ instead of ˆ

In my iMac 21.5-inch computer (OS X El Capitan Version 10.11.1) I have a cordless keyboard. At the top of the key 6 I have ˆ instead of ^. This is a problem. I never have needed to use ˆ, however ^ ...
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3answers
182 views

iMac randomly wakes up from sleep

My iMac (27-inch, Late 2012) randomly wakes up, up to 9 times a day. I'm using El Capitan 10.11.3 (15D21). A syslog | grep -i "Wake reason" shows the following many times: Apr  5 00:02:50 ...
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14 views

iMac randomly losing display settings

Investigating a problem into an iMac, running OSX Yosemite, where it randomly loses display settings. Console logs don't indicate any particular reason for it switching off, however the machine has ...
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62 views

Intel HD Graphics 3000 vs. Nvidia GeForce 9400 256 MB (gaming performance)

I'm currently planning to buy the Macbook Pro, 13-inch (early 2011), 2,7 GHz Intel Core i7, Memory: 16 GB, using Intel HD Graphics 3000. Currently, I'm using the iMac, 21.5-inch (late 2009), 3,06 GHz ...
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1answer
18 views

Unhide application from switcher and menu bar

Recently one of apps is not showing in the Application Switcher, the Dock or even in the menu bar. The only way that I have found to get to it is via Mission Control or Launch Pad. And even when I do ...
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40 views

iTunes audio cuts out at random times when listening to music

This has been an ongoing problem for over a year now. When listening to music in iTunes, something is causing the audio to cut out for a second or two at seemingly random moments. I never stream ...
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0answers
20 views

Is it dangerous to use an iMac with broken USB ports? Is there such a thing as Firewire or display-port to USB?

I've got a mid-2010 iMac, 21", i3 processor with 4gb RAM installed which has only one partially-usable USB port, which will power a 3rd-party mouse, wireless dongle, or a keyboard sometimes, but not ...
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19 views

Mac won't start up broken Hard drive

I have one new working Mac and one Mac with a hard drive that has S.M.A.R.T errors and it won't start up. I want to transfers my data from the broken Mac to the new Mac how do I do this?
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21 views

2007 iMac 24" beach ball at login

I just recently installed a Seagate 2 TB internal hard drive and installed Yosemite. If my WD external drive is connected via firewire during startup, the iMac boots and shows the users, but when I ...