Extended Disk Scan is to be engaged if any of the following is true:
Extended Disk Scan is similar to the command line parameter -ignoreMBR in that the Master Boot Record is ignored, allowing access to disk data. Using this new feature, however it is not necessary to exit the program and run software in command mode with a parameter.
Scanning starts for the whole drive's surface ignoring existing partitions and drives. All detected drives and partitions, existing and previously deleted (even you've re-partitioned and re-formatted the HDD) will be added to the drive's list and you can try to scan them looking for your data.
An original disk contained three partitions with the following sizes: 3GB, 1GB and 4GB. The second and third partitions have been deleted and two new partitions have been introduced with these specifications: 2GB and 3GB. (see figure below)
After the new partitions have been created, you recall some important data on the old 4 GB partition. The table below displays what the Extended Drive Scan will report, showing actions to be taken:
|Suggested Partition Size||Action|
|3 GB||Accept it [Y]|
|2 GB||Skip this partition in order to scan the space underneath|
|4 GB||Accept this partition. The size shows that it is the partition containing your important data. [Y]|
The table below displays the differences between Extended Disk Scan and the DOS command-mode parameter -ignoreMBR:
|Extended Disk Scan||-ignoreMBR|
|Runs in DOS interface mode||Runs in DOS command mode|
|All detected partitions are added as primary partitions (logical drive structure ignored).||Detected partitions are added, maintaining logical drive structure. Disk is restored exactly to the same state it was before data removed.|