I have "Macbook (13-inch, Mid 2010)" it has white plastic case with 4GB 1067MHz DDR3 RAM and NVIDIA Geforce 320M 256MB.

  • Model Identifier: MacBook 7,1

  • Boot ROM Version: MB71.003F.B00.18022149

  • SMC Version (system): 1.60f6

It had originally El Capitan installed. It booted nicely every time. I think that I didn't go trough all software updates it provided.

I did a fresh install of High Sierra from USB flash drive. I went trough some installation steps with errors and restarts.

Now when I boot, there is a 50% chance of booting to OS.

Other times I see grey Apple logo and a progress bar that is filling slowly, gets to 100% and then nothing happens for a whole day.

There were some updates of software in between, but they are not related to this booting problem.

Is there any way how to fix this problem?

Here's a list of things I have done to test/diagnose the problem:

  • three passes of extended Apple Hardware Test; passed OK.
  • First Aid on HDD; passed OK.

  • First Aid test from Disk Utility passed with no errors

  • smartctl short and long HDD tests passed with no errors.

  • I tried to reset NVRAM and SMC. Didn't help.

  • I recently did an update in High Sierra and update of the SMC to the latest version provided for my hardware. Didn't help.

  • I was doing some High Sierra updates, re-installs to Lion, El Capitan and Snow leopard and my Boot ROM Version has changed from MB71.003F.B00.18022149 to according to this article from 31.10.2018, my firmware was latest to that day, so i probably have a recent firmware.

  • output of diskutil info disk0 | grep SMART is SMART Status: Verified but as I said I used smartctl to run short and long SMART tests which passed. Anyway SMART looking ok may mean nothing.

  • verbose boot shows a message Waiting for DSMOS... with few other messages verbose mode

  • removed second partition formatted 320GB partition to APFS and reinstalled high sierra from usb flash drive, original distribution from apple store. didn't help it freezes every other boot.
  • What is "has half chance to boot" supposed to mean? Commented Feb 4, 2019 at 14:48
  • I try to boot, it fails. I push power button until it powers off. I push power button again until i hear cdrom and the new age sound. And then it boots normally.
    – nio
    Commented Feb 4, 2019 at 14:49
  • 1
    What's a "white" MacBook Pro 2010? When you next boot into your Mac, click on the Apple logo, select "About this Mac" and update your question with your correct hardware.
    – Allan
    Commented Feb 4, 2019 at 15:20
  • 1
    Try upgrading to an SSD. You're using an old, 5400 RPM spinning drive - it's well past it's life expectancy. fsck and First Aid won't fix physical issues with the drive which is what I suspect you're facing.
    – Allan
    Commented Feb 5, 2019 at 18:35
  • 1
    One more thing to try...issue the command diskutil info disk0 | grep SMART and post the result to your question.
    – Allan
    Commented Feb 19, 2019 at 16:48

2 Answers 2


What you don't say is how the system behaved before you installed/reinstalled High Sierra. That would be vital information along with what was on it before.

That said there could be a lot of things going on.

  • Damaged/corrupted OS install
  • Damaged/corrupted HDD
  • Other hardware problem including failing RAM or other failing component

What you are going to need to do if you want further help is to fill in the blanks by editing your original post (don't add a comment edit the original) so we can better be able to assist you.


Here's what i did to get OSX High sierra to boot without getting stuck boot screeen (Waiting for DSMOS in verbose boot.)

  1. I've created usb flash installer with OSX El Capitan and second High sierra usb flash installer.
  2. Installed El Capitan to a partition formatted with older HFS+ journaled file system.
  3. Ran updates of El Capitan to the latest version.
  4. Plugged in High Sierra installer flash drive.
  5. Started operating system update from inside of El Capitan.

After that I've tried to boot the high sierra few times and it booted normally each time. The difference is that it runs on older HFS+ file system.

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