Upload the Raspberry Pi Lite Image to SD Card - ajumalp/rpi-nas GitHub Wiki
- Insert SD Card to yout computer
- Using RPi Imager software, erase your SD Card

- Close Imager Software and remove SD Card
- Insert SD Card again
- Run Imager software
- Select Raspberry Pi OS Lite

- Press
Ctrl+Shift+Xto open the Advanced Options 
- Here you can set your hostname, enable SSH, WiFi credentials [don't forget to set WiFi country] and local settings also
-
Please note: I set password as raspberry, so will be using this password throughout this document
- Choose your SD Card and hit Write button to upload the OS to SD Card
- Once the OS is uploaded, your SD Card will be removed automatically
- Close the Imager software