the recovery mode can see the external sdcard
adb shell cannot see external or emulated internal
I need to mount sdcard
C:\Android Studio\sdk\platform-tools>adb shell
shell@android:/ $ df
df
Filesystem Size Used Free Blksize
/dev 895M 76K 895M 4096
/system 1G 1G 585M 4096
shell@android:/ $ dir
dir
/system/bin/sh: dir: not found
127|shell@android:/ $ ls
ls
cache
data
default.prop
dev
efs
etc
fstab.smdk4x12
init
init.rc
lib
lpm.rc
preload
proc
res
root
sbin
sdcard
sdcard1
sys
system
tmp
ueventd.goldfish.rc
ueventd.rc
ueventd.smdk4x12.rc
shell@android:/ $ cd /sdcard1
cd /sdcard1
shell@android:/sdcard1 $ ls
ls
shell@android:/sdcard1 $ mount
mount
rootfs / rootfs rw 0 0
tmpfs /dev tmpfs rw,nosuid,relatime,mode=755 0 0
devpts /dev/pts devpts rw,relatime,mode=600 0 0
proc /proc proc rw,relatime 0 0
sysfs /sys sysfs rw,relatime 0 0
/dev/block/mmcblk0p13 /system ext4 rw,nodev,noatime,nodiratime,barrier=1,data=or
dered 0 0
shell@android:/sdcard1 $ ^C
C:\Android Studio\sdk\platform-tools>
C:\Android Studio\sdk\platform-tools>
C:\Android Studio\sdk\platform-tools>
C:\Android Studio\sdk\platform-tools>
C:\Android Studio\sdk\platform-tools>
C:\Android Studio\sdk\platform-tools>adb shell
shell@android:/ $ df
df
Filesystem Size Used Free Blksize
/dev 895M 76K 895M 4096
/system 1G 1G 585M 4096
shell@android:/ $ mount
mount
rootfs / rootfs rw 0 0
tmpfs /dev tmpfs rw,nosuid,relatime,mode=755 0 0
devpts /dev/pts devpts rw,relatime,mode=600 0 0
proc /proc proc rw,relatime 0 0
sysfs /sys sysfs rw,relatime 0 0
/dev/block/mmcblk0p13 /system ext4 rw,nodev,noatime,nodiratime,barrier=1,data=or
dered 0 0
shell@android:/ $ ls
ls
cache
data
default.prop
dev
efs
etc
fstab.smdk4x12
init
init.rc
lib
lpm.rc
preload
proc
res
root
sbin
sdcard
sdcard1
sys
system
tmp
ueventd.goldfish.rc
ueventd.rc
ueventd.smdk4x12.rc
shell@android:/ $ cd sdcard
cd sdcard
shell@android:/sdcard $ ls
ls
shell@android:/sdcard $ cd /sdcard1
cd /sdcard1
shell@android:/sdcard1 $ ls
ls
shell@android:/sdcard1 $