Control Alt Delete Restart For Mac
I'm not sure where to put it. The error is typical for Windows, but I haven't booted it for a month or so. I have MacBook Pro 13' mid-2012 (last non-retina). The only difference to a tock configuration is SSD drive Crucial MX300 525GB that I installed over half-year ago. I also have 2 operating systems installed (each one on it's own partition): macOS Sierra and Windows 10 Pro using Bootcamp. Today, like every morning, I put my MacBook to sleep (running macOS), put it to my backback and took it out after I arrived at work.
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I didn't notice a macOS user password entry screen, instead there was a black screen with: 'A disk read error occured Press Ctrl+Alt+Del to restart' I suspect, the laptop rebooted by itself, because I'm sure I didn't switched it off and I didn't touch the power button. Ctrl+Alt+Del of course doesn't work, so I had to do hard reset. If I don't touch anything after reboot, any OS doesn't load, I'm getting the same error. And now, most interesting: when I hold the option key to access boot menu, every time I'm getting different combinations of systems to boot into. In approximately 50% of the cases it is as expected: 'Macintosh HD' and 'Windows', but randomly I'm getting also: - 'Macintosh HD' only - 'Windows' only - 'EFI Boot' and 'Windows' - nothing (only WiFi selection dropdown) - 'Macintosh HD' and 'Macintosh HD' (the same, but twice) Whatever I choose, I am always getting an error mentioned in the thread title. If it matters, I noticed that couple of times, when I didn't select anything for a while (about a minute), all the disks disappeared and only WiFi selection remained.
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EDIT: I just noticed that my post contains only description of the problem and no question asked. Did anyone encounter a similar issue on a recent OS? I found something similar already, but all problems were related to old Mac OS X (like Lion) and Windows 7 (or even XP). Nothing new for Sierra/Win10 combination. The issue has been solved, but I don't have any good news to anybody who has the similar problem. First of all, after not receiving any suggestions here and on other forums, I decided to remove all my partitions and set up the system from scratches. I already failed on creating new partitions in recovery mode.

It couldn't have been done, as I was receiving different errors in Disk Utility. Then I decided to send my MacBook to professionals and diagnosis was: faulty hard drive with 99 CRC errors.
It was Crucial MX300 525GB and I just bought few months ago during Black Friday sales. When I contacted the seller (Amazon) they sent me a new one and they didn't even want the old one back. After swapping SSDs everything is back to normal.
You’ve just made the switch to Mac from Windows and you can’t figure out how to ‘Ctrl Alt Delete’ unresponsive programs. In all versions of Windows the fastest and surest way of getting out of a grid lock when an app has hanged or frozen is through Ctrl Alt Delete. Pressing Ctrl+Alt+Delete on the keyboard takes over the screen, gives you options to log off, shut down or open the task manager. When you open the task manager, you can force-close any mis-behaving applications.
Things are a little different on Mac and if you made the switch recently, you might find yourself in a dilemma if one of your full screen applications hangs. Of course you could do a cold reboot of the system but this should always be the last option. Cold Reboot: Press the power button until the system shuts down.
Control Alt Delete Restart For Mac Virtualbox
Then power it back on. The Ctrl Alt Delete alternative for Mac is Command+Option+Esc This will open the ‘Force Quit Applications’ window.
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Select the application you want to force to quit and Mac OS will close the application for you. If the application that’s hanging or mis-behaving isn’t occupying the full screen, there’s another way to force it to quit. Hold down Ctrl+Options the click on the application icon in the dock. You’ll see a few options including ‘Force Quit’.
Control Alt Delete Restart For Mac Download

As you might have noticed already, the “Ctrl Alt Delete” for Mac will not access the full Mac task manager. Only the part that lets you force quit misbehaving applications. You have to go to the ‘Applications folder to open the task manager in Mac.