Difference between ROM for EMMC and ROM for SDcard

[taimed]

Hello community
I have noticed that there are roms for sdcard and ones for emmc.
What are the difference between them?
thanks

[Vladimir.v.v]

Hello! as for Android, the installation can occur from both sd and usb, but the system will always boot from eMMC.

[Electr1]

@taimed EMMC images are basically “raw” images that are written with the amlogic raw partition format,

little more details here…:

Installing OS on VIM3

for example mainline uboot can recognize only u-boot-mainline$ ls disk/part_*.c disk/part_amiga.c disk/part_dos.c disk/part_efi.c disk/part_iso.c disk/part_mac.c amlogic vendor uboot have additional amlogic partition fenix/u-boot$ ls disk/part_*.c disk/part_amiga.c disk/part_aml.c disk/part_dos.c disk/part_efi.c disk/part_iso.c disk/part_mac.c and linux kernel have special dts partition definitions for recognize it