Missing .dmg file

[mesopotato]

Hi, I'm new to the forums

I have this .dmg file that I have since OS X 10.6. It is a somewhat huge file that is encrypted, and contains... "files". And since this encrypted .dmg file contains sensitive "files", I have placed the said .dmg file strategically in /System/Library. Up until OS X 10.10, I never had trouble accessing the .dmg file. It was when I upgraded to 10.11 that I noticed that when I accessed the said location, the .dmg file wasn't there. I know that it has not been deleted, since there has been no significant increase in my storage space (the file is 10gb+ big), so I think the file is just transferred somewhere else.

Any ideas where it might have ended up in? Any help would be appreciated. Thank you

 

[Fishrrman]

I would consider re-locating the file to somewhere else in the future...

 

[NoBoMac]

What Fishrrman said. /System should be thought as Apple's sandbox, and no expectations of anything being preserved there. Add in SIP, yeah, not surprised it's gone.

If you have a TimeMachine back-up, might be able to recover from there.

 

[MultiFinder17]

SIP should move anything that shouldn't be where it is to /Library/SystemMigration/History/Migration-(some UUID)/QuarantineRoot/

 

[mesopotato]

Found it. MultiFinder17 was right, it was in the SystemMigration folder. Thank you MultiFinder17, you've been of great help. Thanks to Fishrrman and to NoBoMac as well for your contributions