Realtek Rtl8821CU Wifi Driver Raspberry Pi Installation

Installing

3. 3. Downloading Realtek rtl8821CU Driver

   Download Realtek rtl8821CU Driver in GNU/Linux

   Realtek rtl8821CU Driver Archive

   Wireless rtl8821CU Driver in Raspbian OS.

   Grab the Driver Installation Script.
   Thanks to fars-robotics.net.
   If you have a different GNU/Linux OS then you may see instead: Realtek Wifi Drivers Linux Setup Guides.

4. 4. Installing Dependencies

   Now to Install Required Packages
   On Raspberry Pi OS play:

   sudo apt-get install -y raspberrypi-kernel-headers bc build-essential dkms git

   When instead on other Debian/Ubuntu based:

   sudo apt-get install -y linux-headers-$(uname -r) build-essential dkms git

5. 5. Installing Realtek rtl8821CU Wifi Driver

   Then to Install Realtek rtl8821CU Wireless Driver on Raspberry Pi
   First, you need to access the Driver location on the MicroSD Card or USB Device:

   cd [DRIVERLOC]

   To Check it’s there List the contents with:

   ls . | grep tar

   The grep Command refine the output List showing only the Entries matching the Keyword.
   But if you are in Trouble to Find it out on Terminal then See: How to Access USB Device.
   And then to set up the Installation Script run:

   chmod +x install-wifi

   sudo mv install-wifi /usr/bin/

   Now to Install Realtek Driver play:

   sudo install-wifi

   For Help use:

   install-wifi -h

   Authenticate with the User Admin Pass.
   If Got “User is Not in Sudoers file” then see: How to Enable sudo.
   Possibly for more detailed instructions see: fars-robotics.net.
   Finally, in case of Issue you may see also: Realtek Wifi Drivers Linux Setup Guides.

   How to Setup Micro SD Card Guide

   Setting up SD Card

   How to set up SD Card GNU/Linux

   In the same way then you may then Copy the Downloaded Driver into it.