How to disable Ctrl+C at Windows startup

Posted On 2005-11-1 by FortyPoundHead
Keywords: disable Ctrl+C Startup
Views: 1504

The problem: Windows lets anyone press the Ctrl+C keys during its initial booting phase and stop the booting. If the user is knowledgeable enough about the MSDOS mode, s/he can then examine the contents of all your drives and folders, etc. To prevent this from happening, you can reconfigure your computer to disable the Ctrl+C keys in the MSDOS mode.

The following method may be used to fix this problem:

  • First, make a backup copy of the C:\CONFIG.SYS file (just in case something goes wrong) by copying this file onto your emergency startup disk. Also, make sure that you can actually use the startup disk to boot your computer into the MSDOS mode.

  • Open C:\CONFIG.SYS with Notepad and add the following line at the very beginning of the file:


  • Now save the file and reboot the computer.

For more information about the CONFIG.SYS file and its contents, please refer to the file Config.txt, installed by Windows in your C:\Windows folder.

Note: Note that this setting also disables Ctrl+C for all programs running in the MSDOS mode.

About the Author

FortyPoundHead has posted a total of 1974 articles.

Comments On This Post

No comments on this post yet!

Do you have a thought relating to this post? You can post your comment here. If you have an unrelated question, you can use the Q&A section to ask it.

Or you can drop a note to the administrators if you're not sure where you should post.

Your IP address is:

Before you can post, you need to prove you are human. If you log in, this test goes away.

Recent Forum Posts

Advanced search added
dwirch posted on September 23, 2017 at about 13:44 in Site News

Job Spammer: Gaurav Mehta - AgreeYa Solutions
dwirch posted on September 22, 2017 at about 10:35 in Spammers

Job Spammer: Prutha Siri - Javelin Systems
dwirch posted on September 10, 2017 at about 6:15 in Spammers

New security implemented
dwirch posted on September 7, 2017 at about 7:16 in Site News

Malicious IP Checker Companion Tool
dwirch posted on August 12, 2017 at about 20:24 in Site News

Job Spammer: Steve Adams
dwirch posted on August 8, 2017 at about 7:44 in Spammers