On Thu, May 05, 2022 at 10:25:07AM +0200, Sascha Hauer wrote: > Is this a DOS partition table or GPT on this card? > I assume it's a DOS partition table in which case you should have a > variable mmc1.nt_signature. Set this to some arbitrary 32bit value. > Several partitioning tools set this automatically, but not all it seems. I investigated from running system: /dev/mmcblk1p3: LABEL="rootfs.1" UUID="6bd1a1f7-f1cb-4121-b1e1-4abe41aa05e6" BLOCK_SIZE="4096" TYPE="ext4" /dev/mmcblk1p1: SEC_TYPE="msdos" UUID="ACC9-583C" BLOCK_SIZE="512" TYPE="vfat" /dev/mmcblk1p4: UUID="348c5617-7055-44f9-a658-562d8bb299a1" BLOCK_SIZE="512" TYPE="xfs" /dev/mmcblk1p2: UUID="e15c856f-aa7f-46b2-9f2e-58672eaaeca5" BLOCK_SIZE="4096" TYPE="ext4" /dev/mmcblk0p2: UUID="f4c88afd-2420-4d50-8672-9ed4cd2d3ff9" BLOCK_SIZE="4096" TYPE="ext4" PARTUUID="eaabcc21-02" /dev/mmcblk0p1: SEC_TYPE="msdos" UUID="CBEC-9FB6" BLOCK_SIZE="512" TYPE="vfat" PARTUUID="eaabcc21-01" You mean this PARTUUID stuff, right? Interestingly the external SD-Card has something like this. So I tested bootloaderspec booting from there: barebox@TI AM335x BeagleBone black:/ mount mmc0.1 ext4 ext40: EXT2 rev 1, inode_size 256, descriptor size 64 mounted /dev/mmc0.1 on /mnt/mmc0.1 barebox@TI AM335x BeagleBone black:/ devinfo ext40 Driver: ext4 Bus: fs Parent: mmc0 Parameters: linux.bootargs: root=PARTUUID=eaabcc21-02 (type: string) barebox@TI AM335x BeagleBone black:/ boot mmc0.1 Booting entry 'BeagleBone Black - Inside M2M (/mnt/mmc0.1/loader/entries/boneblack.conf)' blspec: booting BeagleBone Black - Inside M2M from mmc0 Adding "root=PARTUUID=eaabcc21-02" to Kernel commandline Loading ARM Linux zImage '/mnt/mmc0.1//boot/zImage' Loading devicetree from '/mnt/mmc0.1//boot/am335x-boneblack.dtb' commandline: root=PARTUUID=eaabcc21-02 console=ttyS0,115200n8 rootwait Booting Linux on physical CPU 0x0 [...] blablabla [...] mmcblk0: mmc0:aaaa SC16G 14.8 GiB mmcblk0: p1 p2 EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null) VFS: Mounted root (ext4 filesystem) readonly on device 179:26. Thanks for pointing out to the root cause! Either I change my sfdisk scripting to create partitions including PARTUUIDs or... is utilizing this "variable mmc1.nt_signature" a sufficient workaround in barebox? I can not handle this information, yet. Kind Regards Konsti -- 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
