fastboot oem list_partition_emmc
C:\android-tools>fastboot oem list_partition
...
(bootloader) index, type, start, num
(bootloader) 0, 0x4D, 0x1, 0x3E8
(bootloader) 1, 0x45, 0x3E9, 0x80
(bootloader) 2, 0x46, 0x469, 0x2328
(bootloader) 3, 0x5, 0x2791, 0x43186E
OKAY [  0.024s]
finished. total time: 0.025s

fastboot oem load_emmc
C:\android-tools>fastboot oem load_emmc
...
(bootloader) command format: load_emmc [len] [start]
OKAY [  0.019s]
finished. total time: 0.020s

fastboot oem check_emmc
C:\android-tools>fastboot oem check_emmc
...
(bootloader) This eMMC is not made from Micron.MID=21.
(bootloader) eMMC should not be Micron's
OKAY [  0.028s]
finished. total time: 0.028s

fastboot oem check_emmc_mid
C:\android-tools>fastboot oem check_emmc_mid
...
(bootloader) Manufacturer ID, MID=15
(bootloader) eMMC should be samsung
OKAY [  0.028s]
finished. total time: 0.029s

fastboot oem read_mmc
C:\android-tools>fastboot oem read_mmc
...
(bootloader) command format: read_mmc [emmc/sd] [start] [#blocks] [#block
(bootloader) s/read] [show]
OKAY [  0.015s]
finished. total time: 0.016s

fastboot oem get_wp_info_emmc
C:\android-tools>fastboot oem get_wp_info_emmc
...
(bootloader) eMMC write protection group size = 8192
OKAY [  0.019s]
finished. total time: 0.020s

fastboot oem get_sector_info_emmc
C:\android-tools>fastboot oem get_sector_info_emmc
...
(bootloader) Available eMMC Sector = 4407295
OKAY [  0.021s]
finished. total time: 0.022s