It is necessary to format SD card
SD card is widely used to store or transfer data due to its light weight, cheap price
and great performance. In general, you’ll need to format (micro) SD card under the
situations listed below:
Your SD card is unallocated and you should to format it so that you can save
data on it.
The file system of your SD card is not compatible with your device and you
need to format it to proper file system.
There is something wrong with SD card. For example, SD card not showing capacity correctly; there is messaging saying that SD card is
damaged. Try reformatting it.
Format a SD card using Diskpart
In many cases, you can format SD card successfully to wanted file system within File Explorer or Disk Management. However, if you encounter an error like Windows was unable to complete the format , try to employ Diskpart utility, which can help you to manage disks and partitions. You can use Diskpart to format SD card even it is shows RAW. Now, have a look at how it works:
PS.: Formatting SD card partition will erase everything on it. You
can backup wanted files before this operation.
1. Run Diskpart as administrator.
(In the Search box, type “diskpart” and right click diskpart and choose “Run as
Or press Windows + R at the same time, input “diskpart” and click “OK”.
2. Input “list disk” and hit “Enter” to display all disks on your machine.
3. Run “select disk n” command, “n’ refers to the disk number of the SD card
4. Run “list partition” command to list the partition on SD card
5. Select partition m, “m” refers the SD card partition number that you need to
6. Run “format fs=fat32 quick” command.
PS.: "fat32" can be replaced with "exfat" or "ntfs". You should choose
file system according to your demand. For example, you can format SD card to
exFAT, if you need to use it for Mac and Windows PC and need to store
individual large file beyond 4GB.
After a while, the SD card will be formatted with Diskpart, you can type exit and hit
“Enter” to leave Diskpart.
If the SD card is with one more partitions or have unallocated space, run command
Format a SD card via Diskpart alternative
Diskpart is useful in formatting SD card; but it is with some limitations like:
If the SD card partition is over 32GB, you are not allowed to format it to FAT32 using Diskpart and you'll receive the error – The volume size is too big.
If there are two partitions on SD card and you’ll be unable to format the second partition on SD Card using Diskpart.
To break limitations aforementioned, you can turn to third party partition manager like AOMEI Partition Assistant Standard, which can breaks the limitation of 32GB and manage the second partition on SD card. It is specially designed for Windows systems and can work with Windows 10/8.1/8/7, XP and Vista.
Here are detailed steps to format SD card using AOMEI Partition Assistant Standard. (Take formatting SD card on Windows 10 as an example).
Step 1. Free download,
install and run AOMEI Partition Assistant. Right click SD card partition need
formatting and choose “Format Partition”.
Step 2. In the following pop-up window, determine the file system of
your SD card partition based on specific demand. Here you can choose from NTFS,
FAT32, exFAT, Ext2, Ext3 and Ext4.
Step 3. In the main interface, confirm operation and click “Apply”>“Proceed”
to perform it.
It is available to format external hard drive, USB flash drive and hard disk drive via AOMEI Partition Assistant Standard as well.
AOMEI Partition Assistant Standard is offered with many other powerful functions like wipe hard drive, merge partitions and so on. But to recover deleted partition on SD card, converting dynamic disk into basic without data loss, please upgrade to its Professional version.
From all above, we can realize that it is not a difficult task to format SD card
using Diskpart utility or AOMEI Partition Assistant Standard. You can choose one way to
format it according to your specific demand.