Hi All, I have a Beaglebone Black whith internal MMC and external SD-Card interface. I boot from internal MMC always. The system itself aways boots from internal MMC. Is there a way - may be scriptable in boot entry - to start system from external SD-Card, if it is present? Normally I boot this way, bootchooser select system0 or system1: #!/bin/sh mount mmc1.1 global.bootm.image=/mnt/mmc1.1/boot/zImage global.bootm.oftree=/mnt/mmc1.1/boot/am335x-boneblack.dtb global.linux.bootargs.dyn.root="root=/dev/mmcblk0p2 rootfstype=ext4 rootwait" If I stop autoboot and want to use external SD-Card I manually select insidem2m_sd as a boot entry: #!/bin/sh mount mmc0.1 global.bootm.image=/mnt/mmc0.1/boot/zImage global.bootm.oftree=/mnt/mmc0.1/boot/am335x-boneblack.dtb global.linux.bootargs.dyn.root="root=/dev/mmcblk1p2 rootfstype=ext4 rootwait" Can this be something like: IF external SD-CARD IS PRESENT bootentry is insidem2m_sd ELSE bootchooser ? Please obey if you are inspecting the CMDLINE, in more recent Kernels the mmcblk0 and mmcblk1 numbering is exchanged. Kind Regards Konstantin -- INSIDE M2M GmbH Konstantin Kletschke Berenbosteler Straße 76 B 30823 Garbsen Telefon: +49 (0) 5137 90950136 Mobil: +49 (0) 151 15256238 Fax: +49 (0) 5137 9095010 konstantin.kletschke@xxxxxxxxxxxxx http://www.inside-m2m.de Geschäftsführung: Michael Emmert, Ingo Haase, Dr. Fred Könemann, Derek Uhlig HRB: 111204, AG Hannover _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox