是不是米 5 的分区太奇葩了，哪个是 sdcard 的分区呀。。。
gemini:/ # cat /proc/partitions
major minor #blocks name
8 0 57794560 sda
8 1 16 sda1
8 2 8 sda2
8 3 720 sda3
8 4 128 sda4
8 5 128 sda5
8 6 512 sda6
8 7 512 sda7
8 8 2048 sda8
8 9 4096 sda9
8 10 8192 sda10
8 11 16384 sda11
8 12 32768 sda12
8 13 262144 sda13
8 14 57466860 sda14
8 16 4096 sdb
8 17 4052 sdb1
8 32 4096 sdc
8 33 4052 sdc1
8 48 131072 sdd
8 49 32 sdd1
8 50 936 sdd2
8 51 32 sdd3
8 52 1024 sdd4
8 53 1024 sdd5
8 64 4521984 sde
8 65 4 sde1
8 66 4 sde2
8 67 32 sde3
8 68 192 sde4
8 69 256 sde5
8 70 256 sde6
8 71 128 sde7
8 72 128 sde8
8 73 512 sde9
8 74 512 sde10
8 75 1024 sde11
8 76 1024 sde12
8 77 1024 sde13
8 78 1024 sde14
8 79 4096 sde15
259 0 4096 sde16
259 1 1024 sde17
259 2 1024 sde18
259 3 1024 sde19
259 4 1024 sde20
259 5 1024 sde21
259 6 1024 sde22
259 7 2048 sde23
259 8 2048 sde24
259 9 1024 sde25
259 10 1024 sde26
259 11 2048 sde27
259 12 4096 sde28
259 13 2048 sde29
259 14 2048 sde30
259 15 8192 sde31
259 16 20480 sde32
259 17 32768 sde33
259 18 32768 sde34
259 19 196608 sde35
259 20 65536 sde36
259 21 65536 sde37
259 22 851968 sde38
259 23 3145728 sde39
259 24 1024 sde40
8 80 32768 sdf
8 81 4 sdf1
8 82 996 sdf2
8 83 4096 sdf3
8 84 3072 sdf4
8 85 4096 sdf5
8 86 1024 sdf6
253 0 57466844 dm-0
下面是 mount:
gemini:/ # mount
rootfs on / type rootfs (ro,seclabel,size=1284728k,nr_inodes=321182)
tmpfs on /dev type tmpfs (rw,seclabel,nosuid,relatime,size=1362424k,nr_inodes=340606,mode=755)
devpts on /dev/pts type devpts (rw,seclabel,relatime,mode=600)
proc on /proc type proc (rw,relatime,gid=3009,hidepid=2)
sysfs on /sys type sysfs (rw,seclabel,relatime)
selinuxfs on /sys/fs/selinux type selinuxfs (rw,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,seclabel,relatime)
none on /acct type cgroup (rw,relatime,cpuacct)
tmpfs on /mnt type tmpfs (rw,seclabel,relatime,size=1362424k,nr_inodes=340606,mode=755,gid=1000)
none on /config type configfs (rw,relatime)
none on /dev/memcg type cgroup (rw,relatime,memory)
none on /dev/cpuctl type cgroup (rw,relatime,cpu)
none on /dev/cpuset type cgroup (rw,relatime,cpuset,noprefix,release_agent=/sbin/cpuset_release_agent)
pstore on /sys/fs/pstore type pstore (rw,seclabel,relatime)
none on /dev/bfqio type cgroup (rw,relatime,bfqio)
/dev/block/sda13 on /cache type ext4 (rw,seclabel,nosuid,nodev,noatime,data=ordered)
/dev/block/sde39 on /system type ext4 (ro,seclabel,relatime,data=ordered)
/dev/block/sda12 on /persist type ext4 (rw,seclabel,nosuid,nodev,relatime,data=ordered)
/dev/block/sde32 on /dsp type ext4 (ro,context=u:object_r:dsp_file:s0,nosuid,nodev,relatime,data=ordered)
/dev/block/sde35 on /firmware type vfat (ro,context=u:object_r:firmware_file:s0,relatime,uid=1000,gid=1000,fmask=0337,dmask=0227,codepage=437,iocharset=iso8859-1,shortname=lower,errors=remount-ro)
/dev/block/sde26 on /bt_firmware type vfat (ro,context=u:object_r:bt_firmware_file:s0,relatime,uid=1002,gid=3002,fmask=0337,dmask=0227,codepage=437,iocharset=iso8859-1,shortname=lower,errors=remount-ro)
adb on /dev/usb-ffs/adb type functionfs (rw,relatime)
tmpfs on /storage type tmpfs (rw,seclabel,relatime,size=1362424k,nr_inodes=340606,mode=755,gid=1000)
/dev/block/dm-0 on /data type ext4 (rw,seclabel,nosuid,nodev,noatime,noauto_da_alloc,data=ordered)
/data/media on /mnt/runtime/default/emulated type sdcardfs (rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=1015,multiuser,mask=6)
/data/media on /storage/emulated type sdcardfs (rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=1015,multiuser,mask=6)
/data/media on /mnt/runtime/read/emulated type sdcardfs (rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=9997,multiuser,mask=23)
/data/media on /mnt/runtime/write/emulated type sdcardfs (rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=9997,multiuser,mask=7)
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