... mobility grouping on. Total pages: 32480 [ 0.000000] Kernel command line: console=ttyS0,115200 mtdparts=orion_nand:1M(u-boot),-(rootfs) root=PARTUUID=00000000-01 rw rootwait ignore_loglevel netconsole=6665@10.10.10.3/eth0,6666@10.10.10.4/ [ 0.000000] PID hash table entries: 512 (order: -1, ...

... previously used in conjunction with /dev/disk/by-label/... - otherwise the root partition is (supposedly) not found by the kernel when using root=PARTUUID=... Steps are described a bit more detailed on my site .

... write through [ 22.128889] sd 1:0:0:0: [sda] No Caching mode page present [ 22.134401] sd 1:0:0:0: [sda] Assuming drive cache: write through PARTUUID usb_scan_1=usb=0:1 dev=sda1 My interpretation is that U-Boot finds the kernel on what it considers to be the first USB storage device, so it ...

... works (thanks igorert). ** setenv bootargs_console console=ttys0,115200 setenv bootargs_root 'root=/dev/sda1 rootdelay=10' **You con use UUID or PARTUUID insted of /dev/sdx** setenv bootcmd_usb 'usb start; ext2load usb 0:1 0x6400000 /boot/uImage' setenv bootcmd 'setenv bootargs $(console) $(bootargs_root); ...

... on device mtdblock0, logical block 0 ................. With the hard disk in the box, the usbstick became sdb instead of sda, but having used PARTUUID for defining root partition everything goes OK.

... > bootcmd=setenv bootargs $(bootargs_console) $(bootargs_root);run bootcmd_usb;bootm 0x00800000 > bootargs_root=root=PARTUUID=62F1F1EB-9664-4BDE-99A5-A52D8317F824 rootdelay=20 > bootcmd_usb=usb start; ext2load usb 0:1 0x00800000 /uImage > arcNumber=3104 < mainlineLinux=no ...

... early hook [udev] Starting version 242.84-1-arch :: running hook [udev] :: Triggering uevents... Waiting 10 seconds for device /dev/disk/by-partuuid/d7b6554e-01 ... ERROR: device 'PARTUUID=d7b6554e-01' not found. Skipping fsck. :: mounting 'PARTUUID=d7b6554e-01' on real root mount: /new_root: ...

... to boot from an external USB-drive, first uImage, then -dt kernel. If that fails, it will try the internal microSD, first uImage, then -dt kernel. PARTUUID It is a good idea to change the bootargs_microsd to include the PARTUUID of your internal microSD-card. Once you boot from it, use the blkid ...

... 1 zonelists in Zone order, mobility grouping on. Total pages: 129920 [ 0.000000] Kernel command line: console=ttyO0,115200n8 coherent_pool=1M root=PARTUUID=6994abb8-01 rw rootwait fixrtc [ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes) [ 0.000000] Dentry cache hash table entries: ...

... [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 521810 [ 0.000000] Kernel command line: console=ttyS0,115200 root=PARTUUID=561ddb4b-01 rw rootwait [ 0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes) [ 0.000000] Dentry cache hash table entries: 131072 ...