Consequence: A standard dd if=image.img of=/dev/sdX does not work unless the image includes the correct boot0/boot1 stages and partition table. A functional A20 Linux image is not a single file but a disk image with a specific layout:
Modern images for A20 typically use or legacy raw kernel + device tree. 4. Sources of Pre-Built Linux Images Several communities provide ready-to-use A20 Linux images:
| Offset / Partition | Content | Format | |--------------------|----------------------------------|----------------------------| | 8 KB | SPL (boot0) | Raw binary (with checksum) | | 24 KB (typical) | U-Boot (u-boot.bin) | Raw binary | | 1 MB | U-Boot environment (optional) | Raw | | 2 MB / 4 MB | Boot partition (FAT/ext4) | zImage + .dtb files | | Rest of disk | Root filesystem | ext4 / btrfs / f2fs |
Allwinner A20 Linux Image -
Consequence: A standard dd if=image.img of=/dev/sdX does not work unless the image includes the correct boot0/boot1 stages and partition table. A functional A20 Linux image is not a single file but a disk image with a specific layout:
Modern images for A20 typically use or legacy raw kernel + device tree. 4. Sources of Pre-Built Linux Images Several communities provide ready-to-use A20 Linux images: allwinner a20 linux image
| Offset / Partition | Content | Format | |--------------------|----------------------------------|----------------------------| | 8 KB | SPL (boot0) | Raw binary (with checksum) | | 24 KB (typical) | U-Boot (u-boot.bin) | Raw binary | | 1 MB | U-Boot environment (optional) | Raw | | 2 MB / 4 MB | Boot partition (FAT/ext4) | zImage + .dtb files | | Rest of disk | Root filesystem | ext4 / btrfs / f2fs | Consequence: A standard dd if=image
