You may want to install a new drive for Linux, or at minimum keep an image of the old one that you can restore in the event support is needed -- though replacing the OS doesn't void the warranty, they will require the original OS to be reinstalled in the event support is required. Also carefully examine whatever distribution of Linux you plan to install as far as hardware support is involved -- some Dell systems do have Linux support, while others have hardware that won't work well (or at all) with Linux -- the fingerprint sensors are one problematic example.  
I have a inspiron laptop i am currently running windows 11 . i would like to change my OS to Linux so , will it void warranty on my device (it less than a yeat old) 
Changing OS