There are lots of error messages that may comes when you accessing an external Mac hard disk.The error messages are like:
“The disk is unreadable: Do you want to initialize it now?”
and When you like to check the integrity of the your mac disk by running Disk Utility it may gives some more error messages like -
"Volume check failed"
"Invalid node structure"
"Checking Journaled HFS Plus volume"
"Invalid B-tree node size"
"Error: File system verify or repair failed."
If these errors dispalayed in your system it shows that any crirical problem is occured with your disk and you have to look for a good mac disk recovery software.
These errors shows that any major problem occured with your hard disk due to any one of these reasons it may be due to invalid B-tree node size or may be HFS Plus volume. Both kinds error are very critical and Disk Utility may unable to repair such error.
If you try to resolve these error messages then you have only two options.
1. Try to initialize your mac disk
2. Format the mac disk and make a fresh installation
The Drive initialization completes in these tree step process:
If you try Drive initialization then your problem may be get fixed but you will lose your data and your data can be restored only from your backup.If you dont have backup then Mac Recovery Software is the only one option to restore and recover your mac machine data.A Mac recovery software that recovers lost/deleted data due to accidental deletion or formatting of HFS, HFS+, HFS Wrapper, and FAT file system volumes or corruption of the disk. Detailed instructions file will guide you through this software without much knowledge.
John is a technical writer having vast experience on working with OS like Windows,Mac and Linux, doing research on Free Windows Recovery, Mac Recovery Software And he also working for Windows Recovery Software.
How to recover your Macintosh data when Disk Utili