One of the most exciting features of Android 6.0 Marshmallow is ‘adoptable storage’ feature that lets you use external SD card as internal storage on your phone. Once you adopt SD card as internal storage, your phone will install apps and store data on the SD card. This is a great feature for devices with low internal storage, like the Android One phone to extend internal storage space.

In this tutorial, we show you how to adopt SD card as internal storage on Android 6.0 Marshmallow and move already installed apps to SD card to gain space. Before you get start, note that once you enabled this, your SD card will format into Ext4 and encrypt, so you cannot use the adopted SD card on other devices without decrypting it.


Note: You can also get Android 6.0 Marshmallow’s ‘Adoptable Storage’ like feature on older Android versions, but require root access. Interested users read this [HERE] post.

How to adopt SD card as internal storage on Marshmallow

1. Go to phone Settings and select Storage

2. Select your External SD Card and then select ‘Erase & Format’ option

3. You will get an option ‘Format as internal storage’. Select ‘Erase & Format’

4. On the next page, select ‘Use as internal storage’ and tap Next

Your SD Card will now be formatted (EXT4) as internal storage and encrypt it. Enjoy your extended internal storage and freedom from low storage space issue.

How to move installed apps to external SD card

Some apps will not install on adopted SD card, so you need to manually move such apps to adopted SD card.

1. Go to Settings -> Storage & USB -> Internal Storage -> Apps

2. Select the app you need to SD card.

3. Select ‘Change’, then select your SD Card and then select Move from the ‘Move Authenticator’. That’s it.

Note: You cannot move pre-installed apps to adopted SD card in this way.


  1. Hi! I have updated my Lenovo K4Note to Marshmallow 6.0 and formatted the sd card as internal. Although I am able to move the apps easily, but with this feature, my sd card has stopped showing in the file explorer. I cannot even add media files. Is there any possible way to fix this??

  2. Do I have to format/”adopt as internal storage” before being able to move anything? The expected “change” option isn’t appearing by default.

  3. I have adopted sd card as default storage location in my phone Lenovo can I remove the sd card when I want to ? Will the app data get erased ???

  4. i dnt have this option my phone i am using on7 Samsung i recently upgraded my phone software from lollipop to marshmallow through online process, from that i am using marshmallow 6.0.1 but i have no such option “storage and usb ” i have only “storage” option their any idea what should i do?

  5. I have lg stylus 2.When I go o settings and go to ext sd card, the message I get is Format or eject. What should I do now.

  6. I have a Galaxy on5 with Android 6.0.1 and when I go to settings, storage, and select format the only option given is too format as external storage does not give option to format as internal storage. Is there another way to format as internal storage? Am I missing something? Please advise. My phone is a Samsung Galaxy on5 purchased through PCS mobile. Thank you

    • It seems that Samsung disabled Marshmallow’s native Adoptable Storage feature in Galaxy On5. However, you may refer this guide [] which will give an idea about this

  7. I tried, one app installed in sd card and remaining are not I have 32 gb space in my sd card please help me my phone internal storage is only 2 gb

  8. I have a new Blu R1 HD smartphone. I have installed a SanDisk SD card. I set it up as internal storage but now when I go to Settings / Strage & USB I see internal and SanDisk SD card separately. There is no choice to change anything.If I hold on Internal Storage I see a list of folders. If I hold as SD Memory I see another list of folders. If I click on the menu — three vertical buttons at top right — I get a choice to Rename, Reject, or Format as Portable. Does that mean the phone really sees the SD disk as internal memory?

  9. Is there a way to automate installing/moving most apps to the adopted card without using additional apps like Link2SD or Apps2SD?

  10. sir 1st time main sare apps move ho raha tha lakin ab kuch hi apps move ho rahe hai jaise pehle fb whats app move ho raha tha lekin ab nai ho raha hai

  11. i have a android one of micromax can u please tell me if I put my whatsapp in sd card and then I perform the expansion what will happen ?will any data will get erased ?what if I want to change sd card ?

  12. This feature is useless when the app gets updated from the play store it comes back to internal storage and you have to move it back again


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