BaseSystem.pkg file is one of the important package files which is created when Mac OS X is installed, used by Panther (Mac OS X v10.3) and Tiger (Mac OS X v10.4) 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 recommended not to delete or move this file. Though the system will not face any major issues due to file deletion or move, but if the Mac system faces any problem regarding permissions, Disk utility will not be able to repair the permissions and will need Mac Data Recovery.
• Disk Utility: This is the Apple provided utility to perform disk related tasks such as repairing permissions, disk formatting, partitioning and erasing, disk mounting ,unmounting etc.
When you install anything on Mac OS X, that are installed from package files, which have ‘.pkg’ as extension and simultaneously a file with ‘.bom’ extension is created 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 permission 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 reports 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 error message is typically a symptom that BaseSystem.pkg has been deleted or moved. As discussed, this file is created when Mac OS X is installed, so to solve 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 scans and recovers lost information through powerful scanning algorithms, though offering the interactive interface for easy Mac Data Recovery.
Stellar Information Systems Limited provides Stellar Phoenix Macintosh Data Recovery, a Mac Recovery Software using which we can effectively recover lost data from formatted and corrupted Mac volumes. This Mac Data Recovery software uses powerful scanning algorithms to extract lost data. It supports recovery from iPod and Lacie hard drives also. Phoenix Mac Data Recovery software is compatible with HFS, HFS+, HFSX and HFS Wrapper file systems.
