mach_kernel?

[kwokaaron]

For some reason there seems to be a 'mach_kernel' file appearing on the root level of my HD in Finder? I swear it wasn't there before I installed the 'Security Update 2015-002' yesterday? Anyone seeing this file after the security update as well?

 

[Intell]

That is a critical system file. Do not delete it. You can hide it by entering the following into the Terminal:

sudo chflags hidden /mach_kernel

 

[Samford]

Me too after Security Update yesterday

Had the same mach_kernel visibility issue after yesterdays Security Update.

Solved by this Apple Support page.

https://support.apple.com/en-au/HT203829

 

[Rhobes]

Hi All-

I have 10.9.5 & just downloaded the security update and also now have this kernel in the root level of Mac HD. I almost trashed it, then thought I better come here to see if there is any info on it.

So I did the terminal thing, entering: sudo chflags hidden /mach_kernel, hit return, and I get this:

Sorry, try again.
Password:

I have never had a password on my system, and have used terminal recently and it worked fine. I normally hit return for the password but now I can't do this. Do I have to create a password to follow through on this?