There are alternative options to add this functionality to a Windows machine - see Removing Sensitive Data (On a Mac, under 'Finder', there are options for 'Empty Trash' and 'Secure Empty Trash' secure delete functionality is also part of the IS&T supported PGP encryption implementation) This will decrease the likelihood that anyone will be able to retrieve any sensitive data. Keep in mind that each additional pass you specify will increase the amount of time it will take the Format command to complete its task. Then, the Format command would overwrite each sector four more times each time with a different random number.
So, for example, if you were to use the commandĭrive F: would be formatted and then every sector on the disk would be overwritten once with 0's. Furthermore, the number of passes you specify is in addition to a single pass of 0's. The /P parameter still allows you to specify the number of passes, but now instead of just overwriting the sectors on a disk with 0's, additional passes overwrite sectors with random numbers. Via the Windows CMD prompt the Format command's /P parameter can be used (in Windows 8 and 10). This will take longer than a simple 'Empty Recycle Bin'. To securely 'delete' a file involves overwriting the file several times. On a Windows machines, a simple 'Empty Recycle Bin' will only erase the index to a file, not the file itself, thus exposing you to some risk if the file contained sensitive information, such as SSN, or anything you'd rather someone else could never see.
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