The Erase Disk dialog in Mac OS 9
Erase Disk is an obsolete feature of Mac OS. This allows deletion of all the data on a disk by selecting Special > Erase Disk on the volume window.
In Mac OS 9 and earlier[]
Selecting Special > Erase Disk on the volume window allows you to erase a disk.
In Mac OS X[]
This function has been merged into Disk Utility. Use this tool to erase disks.