MIRROR

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Supported DOS versions:	MS-DOS 5 only
How easy to use?	Easy
How safe to use?	Potentially very dangerous
How common?	Fairly common
Internal or external command?	External

Description

Various disk related functions

Command Syntax

MIRROR [drive] [/l] [/tdrive[-entries]]

MIRROR [/u]

MIRROR [/partn]

drive saves file and directory information for unformatting use later. You may specify several drives by separating them with a space.
/l doesn't make a backup copy of the file and directory info.
/tdrive loads MIRROR as a memory resident program (TSR) which tracks deleted files.You may specify the number of tracked files by changing the -entries option. The tracking information is held in a file called PCTRAKR.DEL
/u unloads the delete tracking program
/partn saves hard disk partition table info to a floppy disk.

If you don't specify the entries option for the delete tracker, MIRROR uses these values:

Type of disk	Number of entries	Size of the PCTRACKR.DEL file
360K (5.25")	25	5K
720K (3.5")	50	9K
1.2MB (5.25")	75	14K
1.44 MB (3.5")	75	15K
20 MB (hard disk)	101	18K
32MB (hard disk)	202	36K
> 32 MB (hard disk)	303	55K

Comments

MIRROR can be very useful. It's based on a similar program from the old Central Point PC Tools suite. The same people also provided UNDELETE and UNFORMAT. In DOS 6 UNDELETE replaces the delete tracker. The file, directory and partition saving stuff hasn't been replaced by anything. Central Point have now been taken over by Symantec and the only utility package available from them now is Norton Utilities (although it is pretty good).

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