This is a request to Adobe. It should be simple enough to implement and would save lots of time and frustration on the user side. I keep my photos on an external drive. I assigned the drive a 'permanent' drive letter, but windows doesn't honor that; it changes the drive letter nearly every restart. Since Lightroom Classic CC apparently looks only at the drive letter, this means that nearly every time I restart I must redirect the catalog to the current drive letter. this is a pain in the neck!!!