So, if you installed OSX Beta or GoldMaster versions, your account enrolled for pre-release updates.
Now, you installed OSX El Capitan from app store (final release, 10.11) but in AppStore -> Updates, Developer Beta keeps whowing you to update to version 10.11.1. This is because your account has now enrolled to pre-release updates.
To fix this, go to System Preferences ->
If you are trying to format/erase a disk and disk utility/diskUtil is stuck at “unmounting disk”, probably “fsck_hfs” is stuck in a loop, trying to repair it before mounting.
I’ve seen solutions where you must boot from an external operating system, bla blah. Too complicated and time consuming.
To fix this fast and easy, start formatting, wait for “unmounting disk” message to appear, then go to Terminal, find the process with the following command
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ps ax | grep fsck_hfs |
You’ll get something like
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simion@Simions-MacBook-Pro:~$ ps ax | grep fsck_hfs 3693 ?? U 1:32.61 /System/Library/Filesystems/hfs.fs/Contents/Resources/./fsck_hfs -y /dev/disk2s2 3984 s000 S+ 0:00.00 grep fsck_hfs |
Then …