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  1. PO
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    <p>I agree with @Salw<br> Please see below code:</p> <pre><code>-------------end-------------- public static HashSet&lt;String&gt; getStorageSet(){ HashSet&lt;String&gt; storageSet = getStorageSet(new File("/system/etc/vold.fstab"), true); storageSet.addAll(getStorageSet(new File("/proc/mounts"), false)); if (storageSet == null || storageSet.isEmpty()) { storageSet = new HashSet&lt;String&gt;(); storageSet.add(Environment.getExternalStorageDirectory().getAbsolutePath()); } return storageSet; } public static HashSet&lt;String&gt; getStorageSet(File file, boolean is_fstab_file) { HashSet&lt;String&gt; storageSet = new HashSet&lt;String&gt;(); BufferedReader reader = null; try { reader = new BufferedReader(new InputStreamReader(new FileInputStream(file))); String line; while ((line = reader.readLine()) != null) { HashSet&lt;String&gt; _storage = null; if (is_fstab_file) { _storage = parseVoldFile(line); } else { _storage = parseMountsFile(line); } if (_storage == null) continue; storageSet.addAll(_storage); } } catch (Exception e) { e.printStackTrace(); }finally{ try { reader.close(); } catch (Exception e) { e.printStackTrace(); } reader = null; } /* * set default external storage */ storageSet.add(Environment.getExternalStorageDirectory().getAbsolutePath()); return storageSet; } private static HashSet&lt;String&gt; parseMountsFile(String str) { if (str == null) return null; if (str.length()==0) return null; if (str.startsWith("#")) return null; HashSet&lt;String&gt; storageSet = new HashSet&lt;String&gt;(); /* * /dev/block/vold/179:19 /mnt/sdcard2 vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0002,dmask=0002,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0 * /dev/block/vold/179:33 /mnt/sdcard vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0002,dmask=0002,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0 */ Pattern patter = Pattern.compile("/dev/block/vold.*?(/mnt/.+?) vfat .*"); Matcher matcher = patter.matcher(str); boolean b = matcher.find(); if (b) { String _group = matcher.group(1); storageSet.add(_group); } return storageSet; } private static HashSet&lt;String&gt; parseVoldFile(String str) { if (str == null) return null; if (str.length()==0) return null; if (str.startsWith("#")) return null; HashSet&lt;String&gt; storageSet = new HashSet&lt;String&gt;(); /* * dev_mount sdcard /mnt/sdcard auto /devices/platform/msm_sdcc.1/mmc_host * dev_mount SdCard /mnt/sdcard/extStorages /mnt/sdcard/extStorages/SdCard auto sd /devices/platform/s3c-sdhci.2/mmc_host/mmc1 */ Pattern patter1 = Pattern.compile("(/mnt/[^ ]+?)((?=[ ]+auto[ ]+)|(?=[ ]+(\\d*[ ]+)))"); /* * dev_mount ins /mnt/emmc emmc /devices/platform/msm_sdcc.3/mmc_host */ Pattern patter2 = Pattern.compile("(/mnt/.+?)[ ]+"); Matcher matcher1 = patter1.matcher(str); boolean b1 = matcher1.find(); if (b1) { String _group = matcher1.group(1); storageSet.add(_group); } Matcher matcher2 = patter2.matcher(str); boolean b2 = matcher2.find(); if (!b1 &amp;&amp; b2) { String _group = matcher2.group(1); storageSet.add(_group); } /* * dev_mount ins /storage/emmc emmc /devices/sdi2/mmc_host/mmc0/mmc0:0001/block/mmcblk0/mmcblk0p */ Pattern patter3 = Pattern.compile("/.+?(?= )"); Matcher matcher3 = patter3.matcher(str); boolean b3 = matcher3.find(); if (!b1 &amp;&amp; !b2 &amp;&amp; b3) { String _group = matcher3.group(1); storageSet.add(_group); } return storageSet; } -------------end-------------- </code></pre> <p>You can call getStorageSet() method to get all storages. But you need check which are available. <br> <strong>Refernce</strong><br> <a href="http://sapienmobile.com/?p=204" rel="nofollow noreferrer">http://sapienmobile.com/?p=204</a> <br> <a href="https://stackoverflow.com/questions/5694933/find-an-external-sd-card-location">Find an external SD card location</a> <br> <a href="http://renzhi.ca/2012/02/03/how-to-list-all-sd-cards-on-android/" rel="nofollow noreferrer">http://renzhi.ca/2012/02/03/how-to-list-all-sd-cards-on-android/</a></p>
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    1. POHow to list additional external storage folders (mount points)?
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    1. COBecause storage_struct has not uniform format in vold.fstab file. ETC:'GT-I8190N' device format is 'dev_mount sdcard /storage/extSdCard auto /devices/sdi0/mmc_host/mmc1/mmc1', so may be you need modify regular express for compatibility more devices.
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