Hello. I installed 4.2 today on my main laptop after having a great experience with 3.8 on an old laptop I use in the garage. After installation, on boot up a text message, "Disk write filters not supported", displays temporarily with the option to hit enter to continue. It subsequently proceeds to boot up without action from the user. It does not appear to have any effect on system performance after loggin in, only a slight delay during the boot up. Research reveals it as a bug, dating back several years, in the grub with several different solutions. I was wondering someone from the community has, or knows of, a preferred "correct" way to resolve, and more importantly the cause of it. Thanks.