Difference between revisions of "Sd boot rootfs"

Latest revision as of 10:47, 12 January 2017

The micro SD card/adapter has to be modified or the USB cable with appropriate host computer driver is needed to boot from the uSD card - see Tmp_manual#Boot for instructions.
EXT4 partition mounted as /.

PC:

After all of the targets are built in poky use files from .../poky/build/tmp/deploy/images/elphel393/mmc/:
- boot.bin
- u-boot-dtb.img
- devicetree.dtb
- uImage
- rootfs.tar.gz
Partition table: msdos (gpt won't work) Format into 2 partitions: FAT32 and EXT4 (use gparted or command line instructions below), the order of partitions is important or change bootargs in the device tree accordingly.
FAT32: copy the following files:
- - boot.bin
  - u-boot-dtb.img
  - devicetree.dtb
  - uImage
If EXT4 is not empty - format it or delete old contents
Mount EXT4 to some <mountpoint>
- unpack the rootfs.tar.gz, console:

tar -C <mountpoint> -xzpf rootfs.tar.gz

Example for /dev/sdX:

create partitions with fdisk , gparted or any other program:
- the 1st partition is to be formatted to FAT32 - 1GB is more than enough
- the 2nd partition is to be formatted to EXT4 - 2+GB

formatting with mkfs:

@@ Line 26: / Line 26: @@
 * Insert, power on
-==Format micro SD card (command line)==
+==Format micro SD card (command line, can be done in the booted from camera's NAND flash)==
-Example for '''/dev/sda''':
+Example for '''/dev/sdX''':
-* create partitions with fdisk
+* create partitions with fdisk , gparted or any other program:
-* mkfs.vfat -F 32 /dev/sda1
+** the 1st partition is to be formatted to FAT32 - 1GB is more than enough
-* mkfs.ext4 /dev/sda2
+** the 2nd partition is to be formatted to EXT4 - 2+GB
+formatting with mkfs:
+* mkfs.vfat -F 32 /dev/sdX1
+----
+* mkfs.ext4 /dev/sdX2
 [[Category:Elphel393]]