CODEWITHSUNDEEP
androidandroid-sdcard
Anggrayudi H
Anggrayudi H

Reputation: 15155

How do I check the type of sdcard's filesystem?

How to check the type of sdcard's filesystem?

For example, in Windows we can see NTFS, FAT32, exFAT, etc.

Thanks in advance.

Upvotes: 1

Views: 8068

Answers (2)

Anggrayudi H
Anggrayudi H

Reputation: 15155

For custom path, we can use this static method:

public static String getFileSystem(File path){
    try{
        Process mount = Runtime.getRuntime().exec("mount");
        BufferedReader reader = new BufferedReader(new InputStreamReader(mount.getInputStream()));
        mount.waitFor();

        String line;
        while ((line = reader.readLine()) != null) {
            String[] split = line.split("\\s+");
            for (int i = 0; i < split.length - 1; i++){
                if (!split[i].equals("/") && path.getAbsolutePath().startsWith(split[i]))
                    return split[i + 1];
            }
        }
        reader.close();
        mount.destroy();
    }catch(IOException | InterruptedException e){
        e.printStackTrace();
    }
    return null;
}

For example, below code:

Log.i("---", "Filesystem = "+ getFileSystem(Environment.getExternalStorageDirectory()));

will produce this output:

I/---: Filesystem = vfat

Upvotes: 2

samgak
samgak

Reputation: 24417

One solution is to run the mount command then do some string processing on the result:

    try{
        Process mount = Runtime.getRuntime().exec("mount");
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(mount.getInputStream()));
        mount.waitFor();

        String extPath = Environment.getExternalStorageDirectory().getAbsolutePath();
        String line;
        while ((line = bufferedReader.readLine()) != null)
        {
            String[] split = line.split("\\s+");
            for(int i = 0; i < split.length - 1; i++)
            {
                if(split[i].contentEquals(extPath) ||
                    split[i].contains("sdcard") ||
                    split[i].contains("_sd") ||
                    split[i].contains("extSd") ||
                    split[i].contains("_SD"))   // Add wildcards to match against here
                {
                    String strMount = split[i];
                    String strFileSystem = split[i+1];

                    // Add to a list/array of mount points and file systems here...
                    Log.i("SDCard", "mount point: "+ strMount + " file system: " + strFileSystem);
                }
            }
        }           
    }catch(IOException e){
        e.printStackTrace();            
    }catch(InterruptedException e){
        e.printStackTrace();            
    }

Running this on my G Pro gave me the following results:

mount point: /mnt/media_rw/external_SD file system: vfat
mount point: /storage/external_SD file system: fuse

Some common Android file system types:

Upvotes: 6

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