Get partiton names and size

# When you need to map emmc blocks to mounts without root and no access to /dev
# Start by finding the target - look in /sys/dev/block for major:minor block devices
#  that will link to mmcblk0, and use that in the first cd below (too lazy to script it today, sue me)
# EarlyMon 2016/01/27
# Steal this method :D

cd /sys/devices/soc.0/7824900.sdhci/mmc_host/mmc0/mmc0:0001/block/mmcblk0
for i in mmcblk0p*
do
  cat $i/uevent | grep "NAME"
  echo ""
done

Can also change first two lines to -

cd /sys/dev/block
for i in 179:*

• because 179 is the major node number for the emmc.

Sizes still come from /proc/partitions