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MS - DOS Command

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Microsoft DOS lock and unlock command

Quick links

About lock and unlock
Availability
Syntax
Examples

About lock and unlick

Lock allows a user to lock a drive, enabling direct disk access for an application.

Unlock allows a users to unlock a drive, disabling direct disk access for an application

Availability

The lock command is an internal command that is available in the below Microsoft operating systems.

Windows 95
Windows 98

Syntax

LOCK [drive:]

drive: Specifies the drive that needs to be locked.

UNLOCK [drive:]

drive: Specifies the drive that needs to be unlocked.

Examples

lock c:

Lock the C: drive

When typing the above command you will receive the below prompt.

WARNING: The LOCK command enables direct access by programs
that can CORRUPT file names and DESTROY disk data, resulting in the
loss of files on your disk.

Are you sure (Y/N)?

unlock c:

Unlock the C: drive

It is important to know that if errors occur indicating that a process, such as fdisk or a setup of a new program or operating system, cannot continue because the hard drive is locked, that using the unlock command will resolve this issue. 


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