Mac Data Loss While Changing Partition Scheme

Sometimes you may need to re-partition your Mac hard drive and then carry out Mac Data Recovery. These situations occur when your current partition configuration does not allow you to perform required operations. For example, when you install firmware updates on Intel-based Mac if it is using non-standard partition scheme like fdisk scheme. 

When you attempt to install the firmware updates on a partition that is using fdisk partition scheme, the process gets terminated and you may encounter the following error message:

"Unexpected error occurred (0); unable to upgrade firmware."

To install firmware updates in such situations, you need to change the partition scheme that requires re-partitioning of hard drive. 

Solution

To resolve this problem, you have two options:

Use external startup disk: Use bootable external disk, like firmware disk which is configured with GUID (Globally Unique IDentifier) partition scheme, to start your Mac using Startup Disk preferences. Apply firmware updates during startup. The updates will be applied to Mac, not external disk. 

Erase and repartition the hard drive and reinstall Mac OS: Format your whole Mac hard drive and delete all the existing partitions. Then repartition the drive using GUID partition scheme and reinstall Mac OS X on it. 

First method may not work in some situations but the second one will work in most of the situations and solve your problem. 

Although, re-partitioning the hard drive would fix your issues but it also has a downside. All the data stored on your Mac hard drive will be deleted and you need to carry out Mac Recovery to get your data back. 

Mac Data Recovery can easily and effectively be performed using third party Mac Recovery applications. These software are particularly designed to scan the affected hard drive and extract as much data as possible from it. 

Most of the Macintosh recovery software come equipped with simple and interactive user interface the lets you perform ‘Do It yourself’ recovery in majority of logical data loss situations. With read-only and non-destructive design, these applications provide safe and systematic data recovery. 

In order to have secure, quick and effective recovery, you are recommended to go for powerful and advanced recovery software. The software should support your combination of file system and Mac OS version. 

Stellar Phoenix Macintosh Data Recovery is the ultimate solution of all your Mac data loss related issues. It supports Mac Recovery from HFS, HFS+, HFSX, HFS Wrapper and FAT file system volumes. It is compatible with Mac OS X 10.5 Leopard, 10.4 Tiger and 10.3.9 Panther.