How can I access my SanDisk sdcard from Linux Deploy
properties - Allow to mount the Android resources
properties - Edit the mount points list
 
$ANDROID_ROOT
/cache
$ANDROID_DATA
/su
$ANDROID_STORAGE/emulated
$ANDROID_STORAGE/4D47-9860

this result in
ubuntu@localhost:~$ df -a
Filesystem                                                     1K-blocks     Used Available Use% Mounted on
/dev/block/loop1                                                 3030800  1858236    998896  66% /
proc                                                                   0        0         0    - /proc
sys                                                                    0        0         0    - /sys
tmpfs                                                            1010636      740   1009896   1% /dev
tmpfs                                                            1010636        0   1010636   0% /dev/shm
devpts                                                                 0        0         0    - /dev/pts
/dev/block/platform/mtk-msdc.0/11120000.msdc0/by-name/system     2483744  2045332    422028  83% /system
/dev/block/platform/mtk-msdc.0/11120000.msdc0/by-name/cache       245679     2165    226311   1% /cache
/dev/block/platform/mtk-msdc.0/11120000.msdc0/by-name/userdata  11608792  8786360   2789664  76% /data
/dev/block/loop0                                                   92656     8064     82628   9% /su
/data/media                                                     11608792  8786360   2789664  76% /storage/emulated
/mnt/media_rw/4D47-9860                                         31150720 25943968   5206752  84% /storage/4D47-9860
ubuntu@localhost:~$

on android 4.2.2 the paths differ
$ANDROID_ROOT
/cache
$ANDROID_DATA
$EXTERNAL_STORAGE
$SECONDARY_STORAGE

this will bind mount all android partitions into linux chroot container
(the latter one is your external MicroSD card)
/system
/cache
/data
/storage/sdcard0
/storage/sdcard1