Create a disk image

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Create a disk image

Using Active@ UNDELETE you can create a Disk Image of a volume (logical drive) or a disk (physical device). To create disk image:

Open the Create Disk Image dialog

  • From the Recovery Explorer toolbar, click Create Disk Image button or use command ActionsCreate Disk Image from main menu;
  • Right-click the selected item and click Create Disk Image command from the context menu.
  • From the Disk Images tab in Command Bar, choose Open Disk Image command;

Create Disk Image dialog

Create Disk Image dialog

Dialog Options

Multiple disk selection

Additional areas on other disks can be selected in the Physical Disks list to be processed simultaneously. At least one selection must be made to begin disk image creation.

Disk Control

Use markers that indicates the first and last sectors on this control to specify an area to image.


Provide location of Disk Image configuration file. To browse to the path, click the ellipsis button […]. All Disk Image chunk files will be created in the same folder with DIM file.


Enter a brief description about this disk image for future reference. Optional.

Replace existing disk image files

If this option is set, all chunk files will be replaced with a new once if their file names are the same.

Ignore R\W Errors

Ignore Read and Write errors during the disk image creation.

Lock Disk

Source disk will be locked until Disk Image creation is complete or aborted;

Ignore Disk Lock Errors

Any errors related to disk lock will be ignored;


Choose one of the following:

  • None [Raw Data] - No compression is applied, sectors are stored in raw format.
  • Fast - Sectors are compressed before storing to the file using a fast compression algorithm.
  • Medium - Sectors are compressed before storing to the file using a slow but more effective compression algorithm.
  • High - High level of compression;
  • Highest - Highest possible compression level ill be used;

Store Disk Image in chunks

Select this check box to save the Disk Image as a series of files with a specified size. Choose the file size from the drop-down list. This option may be useful if you want to write the Disk Image to CD-ROMs or DVD-ROMs. By default this check box is cleared and the Disk Image is stored in one large file;

Click Create Image to initiate disk image creation process with selected parameters.

Create image during the process:

  • To display or hide scanning events and progress details toggle More\Less Info button at any time.
  • To terminate the process, click Stop at any time. Results may be not accurate or complete.

The file extension for a Disk Image configuration file is .DIM by default.

The Destination Path for a Disk Image file must always be on another drive. File systems such as FAT16 and FAT32 do not support file sizes larger than 2GB and 4GB respectively. With these file systems it is not possible to create a Disk Image file for a drive as it is likely to grow larger than the size limit. The solution in this case is to do one of the following:

  • Use a Destination Path drive that is formatted using Windows NT, Windows 2000, Windows XP and using NTFS;
  • Create a Disk Image that is split into chunks of an appropriate size, keeping within the limits set by the file system;

Use Create a Disk Image Wizard for the same purpose.

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