Disk Utility Not Able to Repair the Permissions
When Mac OS X is installed, BaseSystem.pkg file is one of the vital package files which is made to extract files from and is located in /Library/Receipts folder. The information stored in the Receipts folder, is used by Disk Utility to repair and verify permissions of Mac OS X v10.3 or Mac OS X v10.4 volume. So this is not compulsory not to delete or go this file. Though the system will not face any major issues due to file deletion or go, but if the Mac system faces any conundrum regarding permissions,
Disk utility will not be able to repair the permissions and will need Mac data recovery.Disk Utility is the Apple provided utility to perform disk related tasks such as repairing permissions, disk formatting, partitioning and erasing, disk mounting and unmounting and others.When you bed in anything on Mac OS X, that are installed from package files, which have ‘.pkg’ as extension and simultaneously a file with ‘.bom’ extension is made in /Library/Receipts/ folder in the package’s receipt file.
These ‘.bom’ files enlist the files installed by the package along with the permissions for each file. Disk utility performs consent repair and verification by comparing ‘.bom’ file contents with the actual permissions from ‘.pkg’ files. So if any of the package files gets deleted, you need to replace it for Mac recovery. Disk utility intelligence an error message when fail to repair the permissions:“First Aid failed”Disk Utility stopped repairing permissions on ‘(volume name)’ because the following error was encountered:
No valid packages”
This message is typically a symptom that BaseSystem.pkg has been deleted or went. As discussed, this file is made when Mac OS X is installed, so to cure this issue, you need to reinstall Mac OS X 10.3/10.4. You can also copy it from a different computer, which is using the same version of Mac OS X. If you lose data because of primary volume formatting while Mac OS X reinstallation, data recovery Mac utilities can restore it back.
Mac data recovery software scan and recover lost information through powerful scanning algorithms, though donation the interactive interface for simple data recovery Mac. Macintosh Data Recovery software can effectively recover lost data from formatted and corrupted Mac volumes.
This Mac data recovery software uses the powerful scanning algorithms to extract the lost data and supports recovery from iPod and Lacie hard drives also. This Mac File recovery software is compatible with FAT, HFS, HFS+, HFSX and HFS Wrapper file systems.
Source: http://mac-recovery.blogspot.com/2010/03/disk-utility-not-able-to-repair.html