HP Workstation xw4100 Adaptec SCSI RAID 2120S: Software Reference Guide - Page 231

disk Commands disk zero To clear an entire SCSI disk, use the disk zero command. When you clear a disk, all data is erased and cannot be recovered. Command And Switch Availability This command and its associated switch (or switches) are supported on the following operating systems: ■ Windows NT ■ Windows 2000 (basic disk only) ■ Windows XP (basic disk only) ■ NetWare Syntax disk zero [/always{=boolean}] [/wait{=boolean}] {scsi_device} Parameters {scsi_device} Specifies the ID for the SCSI disk you want to clear. A SCSI ID consists of a SCSI channel number (for example, 0, 1, 2, 3, etc.), SCSI device ID (0 through 15 inclusive), and SCSI device logical unit number (0 through 7 inclusive). See the scsi_device section on page 3-7 for more information on how to specify the SCSI device. Switches /always{=boolean} Specifies whether to clear the disk, even if it has data on it. If you specify TRUE, the command clears the disk even if it has data on it. The default behavior for the command is FALSE; the command clears the disk only if it has no data on it. Specifying /always overrides this behavior. In both cases, all user files must be closed. The /always switch cannot override this restriction. 7-31