What is the .OLD File Extension?
.OLD File Extension Description:
The OLD file extension identifies old or archive files used by some operating systems and many applications. Files with the .old file extension can be created automatically by the software or manually by the user.
MS Windows typically uses the OLD file extension as a generic file extension to rename MSDOS system files such as the autoexec.bat and config.sys. The autoexec.bat system file is a plain-text batch file found in the boot device's root directory, and it automatically executes commands during system startup. The config.sys system file is also a text file containing special commands to configure the computer's hardware components so MS DOS and other applications can use these commands.
These 2 MS DOS system files are unnecessary in newer operating systems such as Windows. These files are renamed using the OLD file extension, so the files becomes autoexec.old and config.old. This prevents them from running during boot time, which speeds up both system startup and operation.
However, it is possible for the files to hold some old DOS-level drivers needed by the system, particularly by older OS versions. If problems occur, any of these system files with the OLD file extension can be copied to restore the files and correct the issues.
The OLD file extension also indicates or denotes a backup copy of a file. It normally represents an earlier version of a file. Files with the OLD file extension is sometimes used in order to have the initial file extension replaced.
It can also be appended to the filename as an additional type of file extension when a newer version of the file has been created or saved by a certain program. It is often placed after the original file extension. For instance, the document.xls.old means it is a backup copy of the file document.xls.
Multiple files with the same extension can be renamed to files with the OLD extension without the aid of an external program. An example of this is a group of files with the .txt extension being renamed to files with the .old file extension by typing ren *.txt *.old at the Command Prompt.Author: Microsoft Corporation
Author URL: http://www.microsoft.com
Related Applications: Microsoft Windows
Common Path: C:/
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Do you have errors with .OLD files?
The Reason for .OLD files Errors:
A typical and frequent cause for .OLD files errors is damage in the Windows program registry - repairs are required to protect against further corruption in other software and/or hardware devices. Risks include hardware failure, blue screen errors and fatal software crashes.
What are the Symptoms of .OLD files Errors?
Typical symptoms from .OLD files errors include poor personal computer speed, extended application start up times, problems opening files, extended breaks in application routines, software shuts down without displaying an error, input freezing and applications lock up.
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