[jmstruwe]

I have been battling the rebooting issue for over 10 years, starting with my Kindle Keyboard and continuing with every upgrade including my current 9th and 10th generation Oasis devices. Amazon thought it was defective hardware but when I went through 3 new devices in a 5-month period I concluded the problem was design constraints that I apparently hit.

I have a very large library - currently approaching 28,000 volumes - which I keep organized in collections and prefer to keep as many volumes as I can downloaded to my device. I believe the rebooting has to do with indexing. It would begin occurring when I hit the halfway point of downloading my library and took excessively long to complete the process. I found things improved significantly if I limited collections to 300 volumes, kept it in Airplane Mode unless I actually needed to download or sync, and kept it plugged in when it rebooted.

This theory seemed to hold true until the Oasis, when the file structure changed. After two years of trying to load it the way I want the Gen 10 reboots itself so often I can't count on it being available for use when I want to read, so I am still using the Gen 9 while I try to figure it out. It has some other issues too so that's why I finally joined Mobileread, to see if I can get some answers.