Fix damaged MBR/GPT and Use Partitioning Tools

Fixing MBR/GPT

If partition table looks OK for the disk you are recovering physically (you see all volumes in the Explorer Tree), but your computer still does not boot from this disk, it is possible that Master Boot Record (MBR) is damaged by virus or overwritten. You can try to use Fix Partitioning command to replace existing MBR with the one from the set of templates (the typical one).

To fix damaged Master Boot Record (MBR) or GUID Partition Table (GPT):

  1. Select the disk in you want to fix MBR/GPT for (place cursor on it)
  2. In the main window, from the Partition menu, choose Create/Fix Partitioning...
  3. In confirmation dialog make sure that a proper disk is selected for MBR fixing
  4. Click either MBR or GPT (depending on a partitioning style you like) to confirm the command and wait while list of disks is being refreshed:
How to fix damaged Master Boot Record (MBR) or GUID Partition Table (GPT)

Converting Partition Style

If you want to change "old" MBR style to a "new" one (GPT) to be able having more than four primary partitions or for some other reasons, you can easily do it with Active@ UNERASER. The same applied if you want to return from a "modern" GPT to "obsolete" MBR (but most compatible), for example, to work with disk under Windows 95/98/ME environments.

To Convert Partition Style:

  1. Select the physical disk which partitioning style will be converted (place cursor on it)
  2. In the main window, from the Partition menu, choose Convert Partition Style...
  3. In confirmation dialog make sure that a proper partitioning style will be applied
  4. Click Yes to confirm the command and wait while list of disks is being refreshed
How to convert partition style

Deleting Invalid Partition

If you know for sure that partition on the disk is NOT valid (damaged, or created by mistake instead of deleted one, or recovered not properly) you can delete the existing partition first and then try to search and recover other partitions.

This is also the only option when you found deleted partition using QuickScan or SuperScan, and you know for sure that it is valid, but you are unable to recover it in place due to overlapping with others existing partitions. You are to detect the invalid partition first, delete it and then to recover the only partition you are interested in.

To Delete Invalid Partition:

  1. Verify that existing partition you want to delete is actually invalid partition (Windows Explorer is not displaying it properly, or unable to access it and suggests to format it, or displays a garbage instead of your files)
  2. Select the partition to be deleted (place cursor on it)
  3. In the main window, from the Partition menu, choose Delete Invalid Partition
  4. In confirmation dialog make sure that a proper partition is selected for deletion
  5. Click Yes to confirm the command and wait while list of disks is being refreshed
Undelete files: Search for Deleted Files and Folders

Note
You can delete the only existing partition (Primary or Extended) and you cannot delete the System partition (Active one or having Windows installed). If you need to delete the Extended partition, make sure that it is empty (no logical drives left in it). If logical drives exist in Extended partition, you are to delete them first, then to delete Extended partition itself.

Undelete files: Search for Deleted Files and Folders

Important
Create/Fix Partitioning and Delete Invalid Partition commands for the hardware device has been automatically logged to the partitioning backup file, and you can always rollback you changes later on.

Undelete files: Search for Deleted Files and Folders

Note
Create/Fix Partitioning function is available in commercial (purchased) version only.

See Also:

  1. Using QuickScan to detect files and partitions just deleted
  2. Use SuperScan to analyze deleted and severely damaged volumes
  3. Unerase Deleted Files and Folders
  4. Unerase All Volume Data on a Deleted/Damaged Partition
  5. Search for Deleted Files and Folders
  6. Search for Standard File Signatures and Define Custom Signatures
  7. Preview File Contents (Recovery Status Check)
  8. Rollback, Backup and Restore Disk Partitioning Info
  9. Fix damaged MBR/GPT and Use Partitioning Tools
  10. Fix Damaged Partition (Volume) Boot Sector
  11. Re-create Deleted or Damaged Disk Array (RAID) Virtually
  12. Create and Work with a Disk Image
  13. Inspect file headers and disk data (raw sectors) with integrated Disk Editor (Hex Viewer)
  14. Activate Software with a Registration Key