I tried to boot up in Startup Manager (Option + Power on) but after I selected my only hard disk, it did not work to boot into El Capitan.
#Mac el capitan upgrade boot install#
I checked to ensure no more Apple Store upgrade.īut after installed El Capitan, at the first boot up after first power shut down, I still got the same problem of grey screen with no progress in progress bar.Īpple Store could not solve the problem except asked me either to clean install or to wait for El Capitan patches or other applications upgrade gradually. Mine is MacBook Pro 15-inch, Early 2011, and I have Mac 2011 Office upgraded to 14.5.7, and other applications including Safari browser (I have no other browser) upgraded by clicking the installed applications and checking their websites one by one. Repeat until you've identified and removed the bad ones. On success, begin moving them back one at a time from the temp folders. Step 4 alternate: only move the ones you think are problems, like SyncMate and VirtualBox. Step 4: temporarily move ALL to another folder Step 3: Find where all those are in either /System/Library/Extensions, or in /Library/Extensions Step 2: Type kextstat -l | grep -v com.apple Many posts are on apple developer forum, use the cached view instead of logging in. Step 3: Hit Google with the name of your problematic kext, along with "el capitan boot" as keywords, and find the command to remove it. One way to get to the terminal is in Recovery Mode (hold down Command-R after powering on).
Look for the kernel panic stack trace, and find the kext causing it. Hold down Command-V when rebooting, or Command-S for single-user mode. Step 1: Get a verbose debug to identify the problematic kext. Older versions of Parallels than the current version may also be problematic.
Knowon problem kexts are Eltima SyncMate and VirtualBox. The problem is that some third party kernal extension (kext) files are incompatible with El Capitan.
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