Active@ UNERASER: Dealing With the "Unknown"

User Guide for Active@ UNERASER DOS:

Dealing With the "Unknown"

The list of drives in the Logical Drive Information Display screen usually contains the names of physical disks, logical drives and un-named, Unallocated space. If a partition is damaged, however, it will be identified as the type Unknown. Contents of an Unknown partition cannot be displayed, nor can it be processed by Active@ UNERASER.

The utility understands that there is an existing partition, but as it cannot be certain what is in that space, it cannot scan it or otherwise inspect the space further.

To repair this problem, instruct the utility to bypass information in the Master Boot Record (MBR). For more information on MBR, please see the next section "Backing Up MBR, Partition Table and Boot Sector", below.

Here are the steps:

Exit the Active@ UNERASER program to display the DOS prompt.
Start the program again using the command line parameter -ignoreMBR. For more information, please see "Using Command Line Parameters", below. In this example use the syntax below:
```
A:\>UNERASER.EXE -ignoreMBR=80h 
```
This will start Active@ UNERASER while ignoring the default MBR and partition information.
When the list of drives appears using this parameter, the Unknown space will appear as Unallocated
Position the cursor on the Unallocated space and press [Enter] to detect and recover partitions as described in "Starting Active@ UNERASER", above.

User's Guide for DOS

User Guide for Active@ UNERASER DOS:

Dealing With the "Unknown"

User's Guide content