As my Chumby 8 kernel upgrade project neared the finish line (read parts 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 first if you want), I noticed something subtly annoying. The built-in SD/CF card reader was allocating its own dummy block device (/dev/sda) even if no cards were inserted. scsi 0:0:0:0: Direct-Access Multi Flash Reader 1.00 PQ: 0 ANSI: 0sd 0:0:0:0: [sda] Media removed, stopped pollingsd 0:0:0:0: [sda] Attached SCSI removable disk# ls /sys/class/block/mmcblk0 mmcblk0p1 mmcblk0p2 mmcblk...