The "clean all" command in the diskpart.exe utility does not delete all the data on a disk on a Windows Server 2003-based computer

SYMPTOMS

On Windows Server 2003-based PC, the clean all command in the Diskpart.exe utility does not delete all the data on a disk. The clean all command only cleans the first 1-megabyte (MB) sectors of a disk. Customers who are unaware of this remove may remove the disk, thinking that the disk is clean. Though, the disk may has some private information to which someone who finds the disk can gain access.

CAUSE

A task that is maintained by the Virtual Disk Service (VDS) service does not properly manage the file pointer when the function handles the clean all command.

RESOLUTION

Hotfix information
The hotfix is intended to correct only the problem that is described here. Apply this hotfix only to systems that are experiencing this particular problem. This hotfix get additional testing. Thus, if you are not strictly affected by this problem, we suggest that you wait for next software update that have this hotfix.
Prerequisites

To install this hotfix, you must have Windows Server 2003 Service Pack 1 or Windows Server 2003 Service Pack 2 installed on the PC.
Restart requirement

You have to restart the PC after you apply this hotfix. Hotfix replacement information
This hotfix does not replace any other previously released hotfixes.
Registry information To use this hotfix, you do not have to make any modifications to the registry.
File information

The file attributes of hotfix are given in the following table. The dates and times are given in Coordinated Universal Time (UTC) they transformed to local time. Time Zone in Date and Time in Control Panel used to find variation between UTC and local time.

MORE INFORMATION

The "clean all" command
Clean command used to remove partition or volume formatting from the current disk by zeroing sectors. By default, only the master boot record (MBR) or the GUID partition table (GPT) separation information and any hidden sector information on MBR disks are overwritten. If you identify all parameter, each sector can be zeroed, and all the data that is contained on the drive can be deleted.