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Question: 2017 MacBook Pro with Touch Bar Won't Start After Partitioning

My MacBook pro won't start at all. I successfully created a bootcamp partition a few days ago and it's been working fine--I can switch between Windows 10 and MacOS High Sierra easily. However, I somehow unallocated around 20gb of memory and couldn't allocate it back to my main (Mac) harddrive partition. So I attempted to use a Windows app to allocate it as an exFAT partition with the hope of deleting it from the Mac side using Disk Utility. However, once I powered off my computer, it now won't turn on at all. Meaning, the backlight, keyboard, and touchbar don't turn on. The startup chime was disabled and there is no LED Apple logo so I can't use that to indicate power, howeverwhen I hold down the power bar to boot the computer as I normally would, the Force Touch trackpad begins to click and likewise when I power it off, the trackpad ceases to click. Also I think I can feel warmth coming from beneath the computer near the vent.

I've attempted to reset the NVRAM and SMC, boot safe, hold down option, even try the login trick. Nothing seems to work. Is there anything I can do, or do I need to make a Genius appointment?

MacBook Pro TouchBar and Touch ID, macOS High Sierra (10.13.3), null

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Apr 20, 2018 10:53 AM in response to apple_ru In response to apple_ru

You created a Windows system and erased the entire drive when you formatted the Windows partition. Thus, your entire macOS system is gone. You will need to reformat the macOS volume and reinstall macOS. This, in turn, will overwrite the boot block which will prevent you from accessing the Windows volume so you will need to remove the Boot Camp partition by erasing the entire drive.

Internet/Network Recovery of El Capitan or Later on a Clean Disk

If possible backup your files before proceeding.

  1. Restart the computer. Immediately after the chime hold down the (Command-Option-R) keys until a globe appears.
  2. The Utility Menu will appear in from 5-20 minutes. Be patient.
  3. Select Disk Utility and click on the Continue button.
  4. When Disk Utility loads select the drive (usually, the out-dented entry) from the side list.
  5. Click on the Erase tab in Disk Utility's main window. A panel will drop down.
  6. Set the partition scheme to GUID.
  7. Set the Format type to APFS (SSDs only) or Mac OS Extended (Journaled.)
  8. Click on the Apply button, then click on the Done button when it activates.
  9. Quit Disk Utility and return to the Utility Menu.
  10. Select Reinstall OS X and click on the Continue button.


1. To install the version of OS X that was currently installed use Command-Option-R.

2. To install the original factory version when the computer was new use Command-Option-Shift-R.

Apr 20, 2018 10:53 AM

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Apr 20, 2018 11:13 AM in response to Kappy In response to Kappy

Thanks for the response. However like I said, the startup chime is disabled and the screen won’t turn on so I don’t know how to do this without seeing anything.

Anyway I tried powering it on and using the key combo described but nothing happened.

Would it work if I created a bootable disk on a partition on my external hard drive and plugged it into the computer?

Apr 20, 2018 11:13 AM

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Question: 2017 MacBook Pro with Touch Bar Won't Start After Partitioning