Support For Disk Drive Overlays (Ddo) - Symantec GHOST IMAGING FOUNDATION 7.1 - V1.0 Manual

40 Symantec Ghost support for image files and disks

Support for Disk Drive Overlays (DDO)

Support for Disk Drive Overlays (DDO)
You can restore an image of a dynamic disk only to a basic disk, not to a dynamic
disk. After you have restored the image file to a basic disk, you can then use
Windows 2000 Disk Manager to convert the disk to a dynamic disk.
To delete a dynamic disk, use GDisk. Use the switch gdisk /mbr /wipe to delete all
partitions from the disk. This method destroys all data on the disk.
See "About GDisk" on page 55.
See "Command-line switches"
You can also take a disk image of a dynamic disk if you use the image all (-ia)
switch. The -ia switch performs a sector-by-sector copy of the entire disk. The
disk on which the image is to be restored must be identical to the source disk in
every way. This function is only useful for creating a backup. If you restore an
image created using -ia onto a drive with different geometry, Windows cannot
interpret the dynamic disk.
If you restore an -ia disk image of a dynamic disk onto a SCSI hard drive and you
receive a Destination drive too small message, you must load the ASPI driver for
the SCSI card. Without an ASPI driver, Symantec Ghost does not always detect
the correct size of the SCSI drive and cannot determine whether the drive is large
enough to hold the image.
Note: Use the -ia switch with caution because it is slow and the image file would
be very large.
Symantec Ghost supports DDO as follows:
Backing up or cloning a disk with a DDO creates an image file that does not
include the DDO.
Restoring an image onto a disk with a DDO leaves the DDO intact.
Use the -ib switch to include the DDO in the backup or clone.
Restoring the image file created replaces the existing DDO with the DDO
included in the image.
A GDisk disk wipe overwrites a DDO.
See "Deleting and wiping your disk"
on page 132.
on page 66.