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[Solved] Windows Was Unable to Complete the Format SD & USB

2016-10-18 16:26:16 Posted by Jean to Partition Manager

Summary:
If Windows was unable to complete the format on external hard drive, USB flash drive, SD card, pen drive, SSD and CD/DVD, fix the error with built-in Windows Disk Management or a third-party disk format utility.

"Windows was unable to complete the format" Error

How to format a removable disk (external hard drive, HDD, SSD, USB flash drive, SD card, pen drive & CD/DVD) if Windows was unable to complete the format? For example, if "Windows was unable to complete the format" on SD card, you should know that something goes wrong with the card. It's probably because:

Windows was unable to complete the format

  • The disk is write protected and Windows won't allow you to format the SD card;
  • The memory SD card is infected by unknown virus;
  • The memory SD card is damaged or corrupted;
  • The memory SD card had some bad sectors.

Fix "Windows was unable to complete the format" Error in Windows 7/8/8.1/10 with Best Solutions

If Windows was unable to complete the format SD card, USB drive or CD/DVD, take the first step to remove viruses from the storage drive. If the format error remains, you should now turn to some advanced format tools.

Solution 1. Error "Windows was unable to complete the format", fix it by:

third-party format utility - EaseUS Partition Master

Step 1. Download EaseUS partition magic software. Launch the program.

Step 2. Right-click the drive with format error in Windows and choose "Format partition".

choose format partition to fix windows was unable to complete the format error

Step 3. Configure the label you want in the Partition Label box.

edit partition lable on the drive where Windows was unable to complete the format

Step 4. Select the file system type to be created from the "File System" drop-down list. (FAT/FAT32, NTFS, EXT2/EXT3). If the USB drive is larger than 4GB, you can only choose FAT32, NTFS or EXT2/EXT3; and if the partition is smaller than 4GB, you can choose FAT, FAT32, NTFS or EXT2/EXT3.

choose file system for the drive where Windows was unable to complete the format

Step 5. Choose the Cluster Size (512 bytes, 1, 2, 4...64KB) from drop-down list and click "OK" to apply the format operation.

choose cluster size for the drive where Windows was unable to complete the format

Note: Smaller cluster size makes less wasting of disk space. The smaller cluster size is, the bigger file allocation table (FAT) will be. The bigger the FAT is, the slower the operation system works with the disk.

Step 6. Click "Apply" to confirm to format the write-protected USB flash drive or other removable storage devices.

Solution 2. Error "Windows was unable to complete the format", fix it by:

Windows Disk Management program

Step 1. Right-click the computer icon in Windows 7 or This PC in Windows 8-10 and select "Manage". On the pops up window, from the right pane go to "Storage" -> Disk Management.

Step 2. Now find the SD card or USB drive that shows unable to complete the format error. If there are any partitions on the drive, delete them all, and then you'll get a single volume.

Step 3. Right-click on the drive and hit "Format". Choose NTFS file system if the device is larger than 4GB, or else choose FAT32 file system.

format drive in Windows Disk Management to fix Windows was unable to complete the format