Describe how the active disk drive is changed.

To change an active disk drive, you would first need to power off the computer and disconnect all cables connected to the drive. Next, you would need to remove the screws or clips holding the drive in place within the computer case. Carefully slide the drive out of its slot and disconnect any additional cables or connectors attached to it.

To install the new drive, simply reverse the process. Slide the new drive into the slot, secure it with screws or clips, and reconnect any cables or connectors. Finally, power on the computer and ensure that the new drive is recognized by the system. You may need to format the drive and transfer data from the old drive if necessary.

Procedure to Change the Active Disk Drive:

Step 1: Run Command Prompt as Administrator

- Right-click on the Start button and select "Command Prompt (Admin)".

Step 2: List Disk Volumes

- Type the following command and press Enter:
```
diskpart
```
- Type the command ```list volume``` and press Enter to display a list of all disk volumes.

Step 3: Select the Desired Disk Volume

- Note the volume number of the disk you want to make active.

Step 4: Activate the Disk Volume

- Type the following command, replacing `Volume_Number` with the number of the desired disk volume:
```
select volume Volume_Number
```
- Press Enter.
- Type the command ```activate``` and press Enter to set the selected disk volume as active.

Step 5: Verify Active Disk Drive

- Type the command ```list volume``` again to check if the correct disk volume is now set as active. The "Status" column should show "Active" for the selected volume.

Step 6: Exit Diskpart

- Type the command ```exit``` to close Diskpart.

Additional Notes:

- Only one disk volume can be active at a time.
- The active disk drive is the one from which the operating system boots.
- Changing the active disk drive may require a system restart to take effect.
- It is recommended to back up important data before making any changes to disk configurations.