If SanDisk 64GB Micro SD card won’t format due to its bad sector, you can ask the help of Chdksk utility. Solution 2: Run Chkdsk to check bad sectors Then, you can try to format SD card again. When you see the message that Diskpart attributes cleared successfully, type “exit” to close up this window. Select disk n, n is the number of the SanDisk 64GB Micro SD card. In Diskpart window, type the following commands and hit “Enter” after every command. Enter “Windows +R” at the same time to open “Run” box.ģ. If you still unable to format the SanDisk SD card, you can clear read-only attribute via Diskpart. If the card reader that you insert the SanDisk 64GB Micro SD has such switch, make sure that it is adjusted to unlock position. Some card readers might be with a physical switch that can be used to lock write protection. If you want to format it, you can remove the write protection. If your SanDisk 64GB Micro SD card is write-protected, you will not be allowed to make any write operation including formatting. Since you have realized the possible factors of SanDisk not formatting, you can predict the specific reasons and take responding solutions listed below: Solution 1: Remove write protection on SanDisk SD card How to solve “SanDisk 64GB Micro SD card unable to format”? How can you format it in File Explorer when you are unable to find out it?īefore finding out proper solutions to fix SanDisk 64GB SD card unable to format, let us realize the possible reasons behind this problem：Virus infection, write-protection, bad sectors, corrupted file system, unsupported file system and physical damage etc. It is also possible that SanDisk 64GB Micro SD card not visible in File Explorer. The error message could be “ Windows was unable to complete the format” or something else. However, when you try to format it, there are chances that you failed to format it, companied by an error message. You might need to format it out of certain reasons like erasing data on it. As same as many other kinds of SD card, SanDisk 64GB Micro SD card is a convenient removable storage device.

Failed to mount sdcard invalid argument