Removing Ontrack Disk Manager Partitions (73253)
The information in this article applies to:
• Microsoft MS-DOS operating system 3.3
• Microsoft MS-DOS operating system 4.0
• Microsoft MS-DOS operating system 4.01
• Microsoft MS-DOS operating system 5.0
This article was previously published under Q73253
The following procedure outlines the steps to remove Ontrack Disk
Manager versions 3.3 through 4.21 partitions from a hard drive to
allow replacement with MS-DOS FDISK partitions. The following script
assumes that the first partition on the hard disk is marked as
bootable. Please note that if another partition is marked as bootable,
this procedure results in an unbootable system.
• Locate the Ontrack Disk Manager program DM.EXE, and start it by
typing the following command:
• Press P to enter the partitioning menu.
• Press D to choose delete partition.
• Disk Manager will prompt you with the message
where n equals the last partition number. Type in the number of
the last partition (for example, if there are three partitions,
• Press ENTER to accept the default. This removes the last partition
on the hard drive. You will see this partition removed from the
list of partitions at the top of the screen.
• Repeat steps 3-5 until only one partition remains on the list at
the top of the screen.
WARNING: Be careful not to delete all the partitions, which
would leave you without a boot drive. If this occurs, press R to
return to main menu, and respond NO to the following prompt
by pressing N and then pressing the ENTER key.
• After all partitions except the boot partition have been deleted,
press R to return to the main menu.
• At the following prompt, press Y, then press ENTER.
Write the above partition data to the disk?
• Press ESC to exit Disk Manager.
• Press Y, then press ENTER key to verify that you want to exit Disk
• Press ENTER to reboot the machine.
The hard drive is now ready to be partitioned using MS-DOS FDISK. This
can be done with the current version of MS-DOS, or after updating to
The product included here, Disk Manager, is manufactured by a vendor
independent of Microsoft; we make no warranty, implied or otherwise,
regarding this product's performance or reliability.
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