Secret and unknown MS-DOS commands

[Kalyan]

Secret and unknown MS-DOS commands

[blink]Please use these commands cautiously, some of the commands can erase data and/or erase data without warning.[/blink]

ATTRIB    

The command is short for ATTRIB -a -h -r - s *.* (removes all attributes of a file).

BACKUP /HP    

Unknown

DIR,

This lists all files including hidden files, does not work in Windows 95 / 98 / NT / 2000.

DIR...

Lists all directories that do not have extensions. In Windows 95 / Windows 98 will list the contents of the directories previous to the directory

currently in.

DOSKEY /APPEDIT    

Utilize doskey functions in MS-DOS command utilities such as edlin and debug.

DOSKEY /COMMAND    Unknown

DOSKEY /PERMANENT    Unknown

DOSKEY /SCRSIZE    Unknown

DOSKEY /XHISTORY    Unknown

FDISK /MBR    

Recreates the Master Boot Record See CH000175 for additional information.

FDISK /Q    

Prevents fdisk from booting the system automatically after exiting fdisk.

FDISK /STATUS    

Shows you the current status of your hard drives.

FORMAT /AUTOTEST    

Formats the hard drive without any prompting.

FORMAT /BACKUP

Like /AUTOTEST but it will ask you for a volume label.

FORMAT /Z:n    

Command used with FDISK supporting FAT32, used to specify the cluster size in bytes where n is multiplied by 512.

MEM /A or /ALL    

Adds a line into the MEM command tells the available space in HMA.

RESTORE /Y     Unknown

RESTORE /Z     Unknown

SET DIRCMD=0    

Will make all directories hidden however still accessible, to get them back SET DIRCMD=

SHARE /NC      Unknown

TRUENAME    

When placed before a file, will display the whole directory in which it exists.

VER /R               

Tells you the Revision and if DOS is in HMA.