Resolving Mac Error "journal Magic Is Bad…"
File system journaling is a feature of Mac that enhances fault resilience and availability of computer along with helping in protecting the file system from hardware component failure and unexpected power outage. The journal keeps all the vital information that a Mac computer requires to get back to a previous working state. Serious consequences can result if journal gets corrupted. For instance, it can make a volume unmountable, while rendering the data inaccessible. In such situations, presence of a valid backup can do a great job in restoring lost data and performing Mac Recovery. The reason is that you can then safely erase the corrupted volume without fearing any data loss.
HFS Plus is a journaled file system and is susceptible to above discussed problems. Below is an error message that can occur in system log of a Mac OS X computer when HFS Plus volume is corrupted:
jnl: open: journal magic is bad (0x1fd17 != 0x4a4e4c78)
hfs: late jnl init: failed to open/create the journal (retval 0).
hfs(3): Journal replay fail. Writing lastMountVersion as FSK!
jnl: is_clean: journal magic is bad (0x1fd17 != 0x4a4e4c78)
hfs: late journal init: volume on disk3s3 is read-only and journal is dirty. Can not mount volume.
The above messages are logged when you try to mount a corrupted HFS Plus volume. It can occur because of corruption in Journal.
Journal corruption usually damages Mac volume to an extent that it cannot be repaired by Mac OS X built-in utilities. These include the 'Disk Utility' and its command-line utility - fsck. So you must adopt some other methods of Mac file Recovery.
Recovery Tips
Use these methods to recover from such issues:
Try resolving the given problem by disabling journaling and then re-enabling it again
If you have a backup from which full data recovery is possible, erase the corrupted volume and restore
In cases when these two methods do not work, it is suggested to use a Mac Recovery utility to scan, locate, and recover lost data. These are easily available products with competency to restore lost or deleted information from Mac disks. Due to their interactive nature, these programs can even be operated by a novice.
Stellar Phoenix Macintosh Data Recovery guarantees complete data retrieval from Mac disks formatted to HFS, HFSX, HFS Plus, HFS Wrapper and FAT file systems. With advanced features and simple interface, this Mac Data Recovery software supports Mac OS X 10.6 Snow Leopard, 10.5 Leopard, 10.4 Tiger, and 10.3.9 Panther.
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About the Author:
Allen Sood student of Mass Communication doing research on how to Mac disk Recovery, Mac data Recovery And Mac Recovery . He is also a freelancer for Mac File Recovery , Mac data Recovery And Mac Recovery . He is also a freelancer for http://www.mac-file-recovery.com/
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