Two reasons made me want to upgrade my kernel from 2.6.26 to 2.6.29 for my Debian unstable: It's weird that my mobile hard disk make annoying sound even if I "eject" it before I pull out the USB cable, it's the same sound as the hard disk makes when I power off the computer directly without shutting down the OS. I want to mount my ext4 volume created by Fedora Core 10, it contains a lot of data I need.