Hello, a single card in my SD card reader (usb) could be mounted with /dev/sda1. When booting my system with a card in the card reader the device /dev/sda1 is created. But when I drop the card from the card reader over night, /dev/sda and /dev/sda1 will be deleted on the next day and the device /dev/sda1 will not be automaticly created again when inserting a SD card. Then I have to reconnect (pull out/put in) the usb plug from the card reader *with* the SD card inserted to get /dev/sda1 again. When reconnecting the usb plug from the card reader *without* a inserted SD card, then only the device /dev/sda will be created but not /dev/sda1. A later inserting of the SD card will not create /dev/sda1. What process deletes /dev/sda1 when leaving my card reader over night without a card inside and how could I prevent this? I don't want to leave a card inside the card reader the whole time. And why is there no device /dev/sda1 when I inserted the SD card later? I never have had this problem in previous kernel versions. regards Olaf