So changing it back to 'portable' isn't just a matter of copying all the individual files off of it, there are likely to be various app contents that will be disrupted. Once a card is set up and used as 'internal', it's the Android OS that manages what does and doesn't get written and resides on the card media, you (the user) don't really interact with the card by manually copying files to or from it. If you later decide you want to change your card back to being 'portable', you must do this from within your phone.
Basically, a microSD card formatted as 'internal' has to remain in the phone all the time, and it's of no use on a separate computer, or other phone, anyway - the file system is non-native to most computers (Win and Mac) and the encryption isolates to the card from any other computer device.
#How to format sd card on android install#
Well out of the box, unless you install third-party utilities to do so.
#How to format sd card on android mac os#
The Android OS running on your phone considers it to be just part of the overall storage media, and because the encryption key specifically ties the card only to your phone it won't be mountable or usable on your computer/laptop anyway Also, neither Windows nor Mac OS include support for ext4 file systems anyway. It' s file system is changed from FAT32 or exFAT to ext4 (the same file system that your phone's internal storage uses), and it gets encrypted (with the encryption key residing in your phone's internal storage at a system-level) The card at that point is now considered to be an integral part of your phone's internal storage so don't bother using at as a file transfer media any longer. 'adoptable'), the card is changed in two very distinct ways. When you format a microSD card to be 'internal' (a.k.a.
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