Lightroom makes Mac shutdown and external drive is making noise

[Roberto_Cienfuegos]

When open LR keeps Shotdown the whole IMac 

I am afraid my Hard Drives will get damage. 
can't work and also my external Hard Drive just stating making noise like is working harder. 
if I don't get in LR no issues. 
Just when opened LR the IMac just shuts down with no warning. 
Any ideas how can I resolve this issue. Is the first time is doing it. 

[Akash Sharma]

Hi there,

Sorry that Lightroom is forcing your computer to shutdown. 

Which version of Lightroom are you using? Are you only facing this issue when the external drive is connected to your computer?

It seems that external drive is nearing a hardware malfunction and is causing Lightroom to crash. Please disconnect it from your computer and check if the issue still persists.

Thanks,

Akash