Partition scheme
Changing the partition scheme may affect the boot loader update capability and / or the kernel command line parameters!
SD / eMMC images
- sector size 512 Byte
- unpartitioned area: 4MiB (0x2000 sectors)
Sector numbers are in hexadecimal (as expected by U-Boot's mmc command), size is given in hex (=number of sectors) and dezimal (= size in byte).
| Sector first | Sector last | Size | Usage |
|---|---|---|---|
| 0x000000 | 0x000000 | 0x0001 sector / 512 Byte | MBR / Partition Table |
| 0x000001 | 0x000001 | 0x0001 sector / 512 Byte | free |
| 0x000002 | 0x0007FF | 0x07FE sectors / 1023 KiB | u-boot |
| 0x000800 | 0x000FFF | 0x0800 sectors / 1 MiB | u-boot environment |
| 0x001000 | 0x001FFF | 0x1000 sectors / 2 MiB | free |
| 0x002000 | 0x00BFFF | 0xA000 sectors / 20 MiB | boot / firmware (Kernel, devicetrees) |
| 0x00C000 | 0x08BFFF | 0x80000 sectors / 256 MiB | root |
| 0x08C000 | 0x10BFFF | 0x80000 sectors / 256 MiB | spare, unformatted |
QSPI NOR
- sector size 64k
| Sector | Size | Usage |
|---|---|---|
| 0x0000 … 0x0012 | 0x000D sectors / 832 KiB | U-Boot |
| 0x0013 … 0x0013 | 0x0001 sector / 64 KiB | environment0 |
| 0x0014 … 0x0014 | 0x0001 sector / 64 KiB | environment1 |
| 0x0015 … 0x0015 | 0x0005 sectors / 64 KiB | devicetree |
| 0x0016 … 0x0086 | 0x0070 sectors / 7 MiB | Kernel |
| 0x0087 … 0x0467 | 0x0380 sectors / 56 MiB | RootFS |