Path: /System/Library/Extensions/Accusys6xxxx.kextĮach of those packages reference that folder (both are from Apple)Īs to why you have an extension installed for RAID hardware, it could be related to how OS X can be used to manage SAN's or simply to allow Disk Utility to manage a software RAID. Pkgutil -file-info /System/Library/Extensions/Accusys6xxxx.kext
To know which package a file originated from you would need to use the command line to search through the receipts. The recovery partition does not contain the OS installer (it is around 5GB at the moment, the recovery partition is less than 1GB). Recovery mode installs should download the LATEST OS from Apple (that is why it requires an internet connection to reinstall). if you try to install from an old 10.10.1 bootable USB drive onto a 10.10.3 system). It should also cause the DB to be rebuilt or repaired.Ī clean install via recovery mode will erase the HD & install the LATEST OS.Ī reinstall via recovery mode will install the LATEST OS over the top of the existing filesystem, not replacing any user files or third party apps.Ī reinstall from an old copy of the installer will probably complain & stop you (e.g. A reinstall will re-write the receipts for the packages inside the OS install process. I think there is a DB that manages all the info so that could be damaged. I suspect there are other reasons it could fail (like disk corruption or failing hardware).
That could be due to missing or damaged receipts.
Your OS seems to be failing to correct the permissions for these files. When you use Disk Utility it reads the receipt info & ensures that the installed files have the required permissions. To understand what is broken you need to understand how the 'repair permissions' system works…Įvery installer package includes a list of desired permissions, OS X keeps this info in an installer 'receipt'. I do not know what the ACS6x.kext is for, but I'm not concerned enough to remove it (it is inside a default install for my hardware). You can choose to remove them but I think it is risky, especially if you are just guessing what they may do. They use third parties to make components so the OS requires third party extensions to use that hardware. Apple do not make every single chip & piece of hardware inside Macs (or iOS devices). There are extensions in there from AMD, Apple, Jmicron… many other third parties. It is in the Apple menu when you hold 'alt'.
Take a look in /System/Library/Extensions (or view the installed extensions in 'System Information' under 'Software > Extensions'- it is safer than poking into system folders).
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