Fire TV Stick 4K use USB drive as storage

instructions.sh

# install adb shell apk using downloader
# open adb shell

# list usb drivers and their ids
$ sm list-disks
disk:8,0

# partiion all of usb to be used as internal storage
$ sm partition disk:8,0 private

# alternatively, allocate 50% to be used an internal storage
# $ sm partition disk:8,0 mixed 50

# list mounted usb drive
$ mount | grep expand
/dev/block/dm-2 on /mnt/expand/becae80cd-fd2c-45bd-9200-8585e9a500c2 type ext4
(rw,dirsync,seclabel,nosuid,nodeev,noatime,block_validity,delalloc,barrier,user_xattr)

# list applications
$ pm list packages | grep netflix
package:com.netflix.ninja

# move application to usb drive
$ pm move-package com.netflix.ninja becae80cd-fd2c-45bd-9200-8585e9a500c2