1 page.title=Typical Configuration Examples 2 @jd:body 3 4 <!-- 5 Copyright 2013 The Android Open Source Project 6 7 Licensed under the Apache License, Version 2.0 (the "License"); 8 you may not use this file except in compliance with the License. 9 You may obtain a copy of the License at 10 11 http://www.apache.org/licenses/LICENSE-2.0 12 13 Unless required by applicable law or agreed to in writing, software 14 distributed under the License is distributed on an "AS IS" BASIS, 15 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 See the License for the specific language governing permissions and 17 limitations under the License. 18 --> 19 20 <p>Below are examples of external storage configurations as of Android 4.4 21 for various typical devices. Only the relevant portions of the configuration 22 files are included. 23 24 <h2>Physical primary only (like Nexus One)</h2> 25 26 <p>This is a typical configuration for a device with single external storage 27 device which is a physical SD card.</p> 28 29 <p>The raw physical device must first be mounted under 30 <code>/mnt/media_rw</code> where only the system and FUSE daemon can access 31 it. <code>vold</code> will then manage the <code>fuse_sdcard0</code> service 32 when media is inserted/removed. 33 34 <h3>fstab.hardware</h3> 35 36 <pre><code>[physical device node] auto vfat defaults voldmanaged=sdcard0:auto,noemulatedsd 37 </code></pre> 38 39 <h3>init.hardware.rc</h3> 40 41 <pre><code>on init 42 mkdir /mnt/media_rw/sdcard0 0700 media_rw media_rw 43 mkdir /storage/sdcard0 0700 root root 44 45 export EXTERNAL_STORAGE /storage/sdcard0 46 47 service fuse_sdcard0 /system/bin/sdcard -u 1023 -g 1023 -d /mnt/media_rw/sdcard0 /storage/sdcard0 48 class late_start 49 disabled 50 </code></pre> 51 52 <h3>storage_list.xml</h3> 53 54 <pre><code><storage 55 android:mountPoint="/storage/sdcard0" 56 android:storageDescription="@string/storage_sd_card" 57 android:removable="true" 58 android:primary="true" 59 android:maxFileSize="4096" /> 60 </code></pre> 61 62 63 <h2>Emulated primary only (like Nexus 4)</h2> 64 65 <p>This is a typical configuration for a device with single external storage 66 device which is backed by internal storage on the device.</p> 67 68 <h3>init.hardware.rc</h3> 69 70 <pre><code>on init 71 mkdir /mnt/shell/emulated 0700 shell shell 72 mkdir /storage/emulated 0555 root root 73 74 export EXTERNAL_STORAGE /storage/emulated/legacy 75 export EMULATED_STORAGE_SOURCE /mnt/shell/emulated 76 export EMULATED_STORAGE_TARGET /storage/emulated 77 78 on fs 79 setprop ro.crypto.fuse_sdcard true 80 81 service sdcard /system/bin/sdcard -u 1023 -g 1023 -l /data/media /mnt/shell/emulated 82 class late_start 83 </code></pre> 84 85 <h3>storage_list.xml</h3> 86 87 <pre><code><storage 88 android:storageDescription="@string/storage_internal" 89 android:emulated="true" 90 android:mtpReserve="100" /> 91 </code></pre> 92 93 94 <h2>Emulated primary, physical secondary (like Xoom)</h2> 95 96 <p>This is a typical configuration for a device with multiple external 97 storage devices, where the primary device is backed by internal storage 98 on the device, and where the secondary device is a physical SD card.</p> 99 100 <p>The raw physical device must first be mounted under 101 <code>/mnt/media_rw</code> where only the system and FUSE daemon can 102 access it. <code>vold</code> will then manage the <code>fuse_sdcard1</code> 103 service when media is inserted/removed.</p> 104 105 <h3>fstab.hardware</h3> 106 107 <pre><code>[physical device node] auto vfat defaults voldmanaged=sdcard1:auto 108 </code></pre> 109 110 <h3>init.hardware.rc</h3> 111 112 <pre><code>on init 113 mkdir /mnt/shell/emulated 0700 shell shell 114 mkdir /storage/emulated 0555 root root 115 116 mkdir /mnt/media_rw/sdcard1 0700 media_rw media_rw 117 mkdir /storage/sdcard1 0700 root root 118 119 export EXTERNAL_STORAGE /storage/emulated/legacy 120 export EMULATED_STORAGE_SOURCE /mnt/shell/emulated 121 export EMULATED_STORAGE_TARGET /storage/emulated 122 export SECONDARY_STORAGE /storage/sdcard1 123 124 on fs 125 setprop ro.crypto.fuse_sdcard true 126 127 service sdcard /system/bin/sdcard -u 1023 -g 1023 -l /data/media /mnt/shell/emulated 128 class late_start 129 130 service fuse_sdcard1 /system/bin/sdcard -u 1023 -g 1023 -w 1023 -d /mnt/media_rw/sdcard1 /storage/sdcard1 131 class late_start 132 disabled 133 </code></pre> 134 135 <h3>storage_list.xml</h3> 136 137 <pre><code><storage 138 android:storageDescription="@string/storage_internal" 139 android:emulated="true" 140 android:mtpReserve="100" /> 141 <storage 142 android:mountPoint="/storage/sdcard1" 143 android:storageDescription="@string/storage_sd_card" 144 android:removable="true" 145 android:maxFileSize="4096" /> 146 </code></pre> 147
