I have no administrative account after updating to High Sierra 10.13.5 I have just updated my Mac to High Sierra 10.13.5 and my account which used to be admin has now became standard. It seems I no longer have an administrative account and no solutions worked so far. I have tried resetpassword (doesn't allow me to set admin); .AppleSetupDone (seems this file doesn't exist anymore?); Single User Mode (two ways of using it, one is to boot and delete the applesetupdone file, the other is to create new user and set as admin). 
In the last solution, after dscl . -create/users/hanahadmin
It appears 
/system/library/launchdaemons/apple.com.directoryserviceslocal.plist: No Such File or Directory



I am not at all knowledgable at this and don't know many technical terms or skills, I just tried to follow the instructions but nothing works. I have found some people with the same problem as me. It seems that those who say they do not have AppleSetupDone file are struggling with every single solution, those who have the file say it works.
Please help me on this matter!
Many thanks.



I have tried several solutions, most are from this link 
I don&#39;t have administrator account on my mac
Wow. You certainly have done several steps to remove the AppleSetupDone file. I would try the most correct one 

cd /private/var/db 
rm .AppleSetupDone
ls -la
exit


The ls is just to be sure. If that doesn’t workyoull need to reinstall the OS or erase install if you don’t need a backup. Let me know in comments how the last try to remove the setup file works? (all those allocation zone messages have me thinking your storage or data on it are messed up beyond easy repair)