SymptomAs same as many other kinds of SD card, SanDisk 64GB Micro SD card is convenientremovable storage device. You might need to format it out of certain reasons likeerasing data on it etc. However, when you try to format it, there are chances thatyou failed to format it, companied by an error message. The error message could be“Windows was unable to complete the format” or something else.
It is also possiblethat SanDisk 64GB Micro SD card not visible in File Explorer. How can you format itin File Explorer when you are unable to find out it?
Why can’t format SanDisk 64GB SD card?Before finding out proper solutions to fix SanDisk 64GB SD card unable to format, letus realize the possible reasons behind this problem：Virus infection,write-protection, bad sectors, corrupted file system, unsupported file system andphysical damage etc. How to solve “SanDisk 64GB Micro SD card unable to format”?Since you have realized the possible factors of SanDisk not formatting, you canpredict the specific reasons and take responding solutions listed below: Solution 1: Remove write protection on SanDisk SD cardIf your SanDisk 64GB Micro SD card is write protected, you will not be allowed tomake any write operation including formatting. If you want to format it, you canremove the write protection. Some card reader might be with a physical switch thatcan be used to lock write protection. If the card reader that you insert the SanDisk64GB Micro SD has such switch, make sure that it is adjusted to unlock position. Ifyou still unable to format the SanDisk SD card, you can clear read-only attributevia Diskpart. The steps are listed as follows:1.
Enter “Windows +R” at the same time to open “Run” box.2. Input “diskpart” and hit “Enter”.3. In Diskpart window, type the following commands and hit “Enter” after everycommand.list disk.select disk n, n is the number of the SanDisk 64GB Micro SD card.disk attributes clear readonlyWhen you see the message that Diskpart attributes cleared successfully, type “exit”to close up this window. Then, you can try to again.
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Solution 2: Run Chkdsk to check bad sectorsIf SanDisk 64GB Micro SD card won’t format due to its bad sector, you can ask thehelp of Chdksk utility. Here are detailed steps:1. Open “Run” box, type “cmd” and hit “Enter” key.2. Type “chkdsk g: /f”, where “g” is the drive letter of your SanDisk Micro 64GBpartition.3. Type “exit”.Solution 3: Format SanDisk SD card using Disk ManagementIf your SanDisk SD card has no drive letter or is unallocated, it will not show up inExplorer. Thus you can’t format it in File Explorer.
In such case, you can format itor via Disk Management. The detailed steps to format SanDisk Micro SDcard are given below:1. Enter “Windows +R” at the same time to open “Run” box.2.
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Type “diskmgmt.msc” and hit “Enter”.3. Locate the SanDisk 64GB Micro SD card, right click it and choose “Format”.4. Select file system that you want to format SD card with.Solution 4: Clean SanDisk SD card and create new partitionIf the SanDisk Micro SD card shows as Raw drive in Disk Management, you might receivethe error message that the format did not complete successfully. In such case, youcan turn to Diskpart utility.