White Screen on Reboot after El Capitan Update

Question

Level 1

9 points

White Screen on Reboot after El Capitan Update

I have updated to El Capitan and everything is fine up until I need to restart my iMac. It loads up to the initial white screen with the Apple logo and progress bar stays at zero. I have tried running first aid and am unable to boot in safe mode. My only option each time I have tried is by pressing cmd+r on startup and then to either restore from backup, or reinstall El Capitan.

I have also lost the ability to write to my external drive and its status is now read only.

I have read in a couple of places that Little Snitch may be causing the reboot failure problem. Does anyone have any more information on this issue?

Thank you.

iMac (27-inch Mid 2011), OS X El Capitan (10.11)

Posted on Oct 5, 2015 4:23 AM

Reply

Answer 1

rkaufmann87

Level 10

140,454 points

Oct 5, 2015 5:57 AM in response to nigel_f

Please try doing a PRAM reset and see if that helps. Intel iMac SMC and PRAM resets

Reply

Answer 2

nigel_f Author

Level 1

9 points

Oct 5, 2015 6:42 AM in response to rkaufmann87

Thanks for your help, though I have already tried that and no luck. Still get the white screen at the beginning of startup and it sticks there with a zero progress bar.

Reply

Answer 3

rkaufmann87

Level 10

140,454 points

Oct 5, 2015 7:46 AM in response to nigel_f

Okay,

Restart into the Recovery Partition (Command + R), open Disk Utility and repair the HD 2-3 times. If no errors appear, exit DU and then reinstall OS X. This install will not overwrite any of your data however you should always have a full backup of your system.

Reply

Answer 4

nigel_f Author

Level 1

9 points

Oct 5, 2015 9:54 AM in response to rkaufmann87

For anyone having the white screen on reboot issue, this post (link below) worked for me and I finally got the problem of reboot sorted. There is another post elsewhere too regarding this solution, with many people reporting this has worked. Hope it helps you.

First Boot-Up Into El Capitan "Got Stuck"

Reply

Answer 5

vmalonso

Level 1

0 points

Oct 6, 2015 4:18 PM in response to nigel_f

It didn't work for me :-(

Reply

Answer 6

Oct 9, 2015 2:56 PM in response to nigel_f

I have the same problem too I reboot my mac and I got white screen, no matter what I do PRAM, Option, Comand+R, unplugging my mac mini for SMC andnothing works, I'm begining to wonder if I change hard drive maybe I would solve the issue

thanks

Reply

Answer 7

vmalonso

Level 1

0 points

Oct 9, 2015 3:54 PM in response to nigel_f

Thi is what worked for me:

Before upgrading I deleted this file:

sudo rm -rf /System/Library/Extensions/EltimaAsync.kext

Read it in this thread:

El Capitan won't Boot after update

Reply

Answer 8

Oct 9, 2015 11:09 PM in response to vmalonso

Well...as long as I can't get in...it's uselles for me

Reply

Answer 9

Nov 8, 2015 8:35 PM in response to albertbope1

Were you able to fix the issue? I'm having issues myself.

Reply

Answer 10

vmalonso

Level 1

0 points

Nov 8, 2015 11:24 PM in response to drinkblackwine

Have you seen if you have this file?

/System/Library/Extensions/EltimaAsync.kext

If so, delete it:

sudo rm -rf /System/Library/Extensions/EltimaAsync.kext

I deleted it from a Yosemite backup before upgrading for the 6th time to El Capitan, but I think you can delete it from El Capitan system.

Hope it helps.

Reply

Answer 11

Sep 22, 2016 11:09 PM in response to nigel_f

Really struggled with this one...did the shift-boot, the option-command-p-r boot, got rid of kext files and that gave some breathing room. But still predictable white screen boots not all the time but too often. So I took my Late 2011 MacBook Pro to the Apple store and they did a diagnostic on it .. in ten seconds they knew it was a hardware issue...the graphics-card attached to the motherboard was history. The 1-year warranty was long expired but was told that Apple had identified this as an issue with my model...and so I qualified for the free repair/replacement that would have costed me close to $900 (which I wouldn't have done if I had to pay for it myself...I would have looked into getting a newer machine otherwise). I was told my Mac was almost vintage and I was lucky that the program was in place...because not too long from now my Mac won't be serviceable by Apple, it being too old. Thank you Apple for your program...I am grateful. Problem solved!

Reply