Recently, my micro SD card stopped showing up in Explorer on my Surface pro 6. I opened the Disk Management tool and the disk does get recognized (as Disk 1 below), but the main partition does not have a letter, and I can not access its properties or do any changes to it.
I did not do anything to the SD card and have no idea how the letter (D:/) disappeared from it. I have many important files on it.
when I right click on the Disk 1 label and click "Change Drive letter and paths", it gives me this message:
I tried removing the device and reinserting it, and restarting my computer, nothing works. Is there a way to restore it?
51 Answer
What is the actual size of the microSD card? It shows as having two partitions, one of 16 MB, another of 119 GB, and neither have a file system. Did you intentionally create a second partition? That can also happen during attempted use of the card as boot media when an application such as Rufus creates a separate boot partition. In any case, it's puzzling that there is no file system in either partition.
In order to use the disk, a file system must be written to the card. Unless you have a need for two partitions, do the following, using Windows Disk Management or a third-party tool such as free DiskGenius, which offers greater capability (e.g. extx file system).
- Delete both partitions, creating ~135 GB free space.
- Create a single partition using all that space.
- Create a file system. For flash memory in microSD cards, FAT32 or exFAT is suggested.
- Test writing and reading a few GB with the card to be sure it is not damaged.
