Macbook is very popular among the people due to its huge collection of functionalities and features. It provides high level of security and reliability to the users like smooth animations, multi-party chatting, soft drop shadows etc, which have made it more appealing. However, in some situations it gets corrupted and starts throwing a variety of error messages that can be categorized by numbers.
As for example while opening an application or file in Macbook, you may get the below given error message: "Unknown error 39: end of file or no additional data in the format."
This error code on Mac is generally followed by: "End of file or no additional data in the format", which indicates that the file is heavily corrupted and hence the Mac is unable to read it. For resolving Unknown error 39, you can use disk utility. Disk utility is an inbuilt tool provided by the developers for checking your hard disk integrity. If due to any reason disk utility fails to resolve the problem, you will have to use the 'fsck' command manually with suitable options.
However, if you are still getting the problem you should format your Macbook and reinstall mac OSX. Formatting erases all your precious data from the hard disk and will solve all your problems including unknown error 39, so if you are having a backup of the program or file handy then you can restore all your lost data by using it. In its absence you will have to take the help of third-party mac data recovery tool. Mac data recovery software uses effective and influential scanning algorithms for recovering the lost Mac data. It is compatible with HFS, HFS+, HFSX and HFS Wrapper file systems and also supports all versions of Mac OSX. This tool has a highly interactive and user-friendly interface which allows even non-technical users to easily operate it.
Processor: Intel Power PC (G4 or later)
Operating System: OS X 10.6 Snow Leopard, 10.5 Leopard, 10.4 Tiger, and 10.3.9 Panther
Memory: 256 MB
Hard Disk: 40Mb