Scenario: Removable disk not formatting
“Hello all, I have a brand new 64GB SD card with the purpose of carrying videos. It
was formatted to NTFS to store data, which reports errors recently when it is
connected to computer, and it asked me to format it. Then, I tried to reformat it to
FAT32. However, When I format it in Windows Explorer, the SD card format did not
complete successfully and gives error message: Windows was unable to complete the
For the moment, the SD card turns inaccessible and can’t be formatted. So, I’m here
to ask if there is any way can format it and make it normal to use? Any help will be
Many users asked that kind of questions on forums. Fortunately, this article will
give you the detailed and overall explanation about this issue.
Main causes that Windows was unable to format memory card
Many users would prefer to store data on the memory card because it can store a large
amount of data and save storage space on local hard drive; it is portable and easy
to carry. It is widely used in digital products such as camera, cell phone, MP3/4
player, etc. Memory card is important to you.
Like the Scenario, sometimes, you may need to format your memory card for some
reasons. But what if you meet the problem that Windows was unable to format memory
card? To fix this error, you need to know the main causes that Windows can’t format
1. Virus infection
Memory card is portable and it is easy to connect to computer for transferring data.
It may be used on various computers. Once you plug it into a computer which is not
protected by antivirus software such as public computer, your memory card will
infect virus with dangerous files, which may cause your memory card stop working,
thus, Windows cannot format it, either.
2. Storage devices have bad sectors
All storage devices consist of sectors which are the smallest unite for data storing.
If there are bad sectors on your memory card, you cannot read and write on it, even
can’t format successfully.
3. Storage device damage
If your storage device is damaged, you cannot access it. And you cannot format the
drive if it can’t be used.
4. Disk is write-protected
When your memory card is write-protected, you can only read it. If you try to change
data on the write-protected drive, it may give you an error message: The disk is
write protected. Remove the write protection or use another disk.” thus, if you
want to format
the write-protected memory card with Windows built-in tool, you need to
remove the write-protection before.
Windows was unable to format memory card solution
If you meet the problem “Windows was unable to format memory card”, you need to make
sure that whether your storage device is damaged first. If it has a physical damage,
then you need change a new one. If not, you need to check errors on
the memory card and fix the errors. If there is no error on the card, you need to
consider whether it has virus infection. For this situation, you need to install an
anti-virus software to solve the problem. If it is because of the write protection,
you can try the following solutions.
Solution 1: Using Windows Disk Management
Windows Disk Management is a disk partition manager provided by Windows. It is able
to create new volume, extend/shrink partition, change drive letter, delete or format
partition, etc. It can even format damaged flash drives. To solve Windows was unable
to format memory card, you can follow the steps below:
Step 1. Connect your memory card to your computer, make sure it can
be detected by your computer.
Step 2. Right click on My Computer, select Manage,
click Disk Management to open it. In the main interface, you can
see all storage devices on your computer.
Step 3. Right click the memory card, select Format.
Then, it will pop up a small window that you can select file system to perform.
However, this action is not workable in some cases, for example, if the storage
device has no partition, or the drive has RAW file system, the Windows was unable to
format. Then, you have to recreate
new partition for the memory card formatting:
Right click on the memory card, select “New Simple Volume” to recreate new
partition for the memory card. When you recreate new partition on the flash drive,
you’ll find it has been formatted and is properly recognized by system.
Or, you can turn to Diskpart format partition, or use third party software to solve
“removable disk not formatting” problem.
Solution 2: Taking use of third party software
AOMEI Partition Assistant is a great
disk partition manager that can rescue the shortages of Windows Disk Management. It
can help you check and fix bad sectors for memory card, pen drive, USB flash drive,
internal/external hard drive, and can help you complete the format successfully on
memory card, or other storage devices even when the drive has no partition, or the
drive has Raw file system.
If you can’t solve the question by the methods we mentioned above, you can take use
of AOMEI Partition Assistant. No matter the drive has no partition, or the drive has
RAW file system, it can solve it. Free download and
install AOMEI Partition Assistant Standard to your computer for solving your problem
in different situations--
Situation 1: the drive has no partition
If it is because of the drive has no partition, you can make use of AOMEI Partition
Assistant to create partition.
Step 1. Launch AOMEI Partition Assistant, you can see the memory
card on the main interface shown as “unallocated space”, right click the unallocated
space, select Create Partition.
Step 2. Here, you can setup the new partition including the file
system, here we create a FAT32 partition. Click OK.
Step 3.When you back to the main interface, clickApply -> Proceed.
After that, you have create a new FAT32 partition.
Situation 2: the drive has Raw file system
Raw drive is a hard drive or partition which has not been formatted in
FAT12/FAT16/FAT32 or NTFS file system. Raw drive can be caused by many reasons like
virus infection, format failure, power outages, unrecognized file system, etc. To
fix RAW file system, you need to reformat the memory card. And using AOMEI Partition
Assistant to reformat memory card is a simple thing.
Step 1. Launch AOMEI Partition Assistant. In the main
interface, you will see the memory card shown as unformatted. Right click it, selectFormat Partition.
Step 2. It will pop up a window that you can choose to format the
partition to FAT32, NTFS, exFAT, Ext2, Ext3, etc. Choose the one you need, clickOK.
Step 3. Finally, clickApply -> Proceed.
When you find the Windows was unable to format memory card solutions, you need to
find what caused that first, and then, choose the right way to solve it. When you
need, you can turn to a memory
card partition tool to assist you with those problems. AOMEI Partition
Assistant is a great partition manager that can help you solve removable disk not
formatting problem, and many other problems, you can free download it to have a try.
What’s more, if you need more advanced features, you can upgrade to AOMEI Partition Professional to