====== How to Delete a Operating System Listed in Windows Boot Manager in Windows 7 and Vista ====== This will show you how to delete a non-default operating system in Windows 7 and Vista from the list in the Windows Boot Manager that allows you to select a OS to run at startup. %ICON{"tip"}% You must be logged in as an administrator to be able to do the steps in this tutorial. OPTION ONE --- Through System Configuration
**1.** Open the Start Menu, type**msconfig** in the search line, and press**Enter**.

**2.** Click on the**Boot** tab. (see screenshot below)

**3.** Select the operating system you want to delete that is not set as the**Default OS**, and click on**Delete**. (see screenshot above)
**NOTE:** If the OS you want to delete from the list is the**Default OS**, then you will need to change the ****//default operating system****// to another listed OS first.

**4.** Check the**Make all boot settings permanent** box, and click on**OK**. (see screenshot below step 2)

**5.** Click on**Yes** to confirm. (see screenshot below)

**6.** Click on the**Restart** button. (see screenshot below)
**WARNING:** _This will restart the computer immediately. Make sure you save and close anything open that you do not want to lose first_.


OPTION TWO --- Using the bcdedit Command **1.** Open a **elevated command prompt** or a **command prompt at boot** .
**NOTE:** If you have a**RAID** setup or a**PCI-E SSD** as your boot drive and want to open a command prompt at boot, then you may need to use the Load Drivers option in the ****//System Recovery Options****// screen to load it's drivers first before Windows will see the boot drive to be able to use the bcdedit command on it.

**2.** In the elevated command prompt, type**bcdedit** and press enter. (see screenshot below)
**NOTE:** _This will let you see what OS is the**default** to start under the**Windows Boot Manager** section, and to see the**description** (name) and**identifier** of the operating system(s) listed in Windows Boot Manager are under the**Windows Boot Loader** section(s). For example,**Microsoft Windows Vista** (description) as**{730ab458-b062-11e0-84f1-fa307df851c2}** (identifier).//

**3.** In the elevated command prompt, type the command below for a listed OS that you want to delete, and press Enter. (see screenshot below)
**NOTE:** If the OS you want to delete from the list is the**Default OS**, then you will need to change the ****//default operating system****// to another listed OS first.
bcdedit /delete {identifier}

**For example:** If I wanted to delete**Microsoft Windows Vista** (description) as**{730ab458-b062-11e0-84f1-fa307df851c2}** (identifier), I would type this below and press Enter.

bcdedit /delete {730ab459-b062-11e0-84f1-fa307df851c2}


**4.** In the elevated command prompt, type**bcdedit** and press enter. (see screenshot below step 3)
**NOTE:** This will let you see and verify that the OS has been deleted.

**5.** When finished, close the elevated command prompt. -- Main.FredPettis - 2012-05-17