There are a number of common issues experienced with SanDisk memory cards and flash drives. We have categorized the usual problems on SanDisk USB flash drives, pen drives, micro SD cards, SDHC cards, and SDXC cards, into two groups corresponding to their solution. These problems can all be solved by either formatting the disk or manually repairing the device from the registry editor. Check which category your problem falls into, then follow the respective guide to get your SanDisk device working again.
Common Issues with SanDisk Cards and Flash Drives
Category 1
- SanDisk SD card not showing the full capacity.
- SanDisk Cruzer 16GB not recognized by camera or phone.
- Windows unable to complete the format for a SanDisk removable disk.
Category 2
- SanDisk write-protected error in Windows: can't write anything.
- SanDisk flash drive is corrupt, inaccessible, unreadable, damaged, or has bad sectors.
Category 1 Solution: Format the Disk
When facing SanDisk problems similar to the listed entries in the first category, go ahead and download EaseUS Partition Master, the most recommended SanDisk format tool, for a quick fix. Go to EaseUS’s free partition manager page to learn more details about the software.
Guide: Format a Sandisk drive in Windows operating system
Step 1: Launch EaseUS Partition Master, right-click the partition on your external hard drive/USB/SD card which you want to format and choose the 'Format' option.
Step 2: Assign a new partition label, file system (NTFS/FAT32/EXT2/EXT3), and cluster size to the selected partition, then click 'OK'.
Step 3: In the Warning window, click 'OK' to continue.
Sandisk Usb Format Tool Windows
Step 4: Click the 'Execute Operation' button in the top-left corner to review the changes, then click 'Apply' to start formatting your external hard drive/USB/SD card.
Category 2 Solution: Fix Write Protection and Corruption Errors via Regedit/Registry
For the situations in the second category, simply formatting the disk will likely not be sufficient. Instead, it will require some manual editing of the Registry.
1. Repair a Write-protected SanDisk SD Card or Flash Drive
If it's about removing the write protection on a micro SD card, there are three ideas to fix a write-protected SD card, including unlocking the lock switch, toggling the loss lock switch, and changing the lock feature in the mobile device settings.
Since a USB flash drive doesn't have a lock switch, you can only try to fix a write-protected USB drive by deleting its associated registry files. This allows the device to be reinstalled by your computer, which will lift the write protection setting. The method to get this done will be laid out in #2, as it will also solve when a computer does not detect the device at all.
2. Repair SanDisk Device Not Detected by a Windows PC
The official SanDisk knowledgebase states that a corrupt registry entry can cause your SanDisk product to not be detected by the computer. Removing the registry keys created upon installation of your SanDisk product will allow the computer to fully reinstall the device and may resolve the issue.
Step 1. Back up the registry
1. Unplug the device from the USB port.
2. Run regedit.
Windows XP: Go to 'Start' > 'Run', type in regedit and then click 'OK'.
Windows 7, 8 and Vista: Click the Start button, type regedit in the search box, and then press Enter.
Window 10: Type regedit, in the 'Search the web and Windows' field (lower-right) and then select 'Regedit - Run Command'.
3. From the registry menu, choose File > Export.
4. Name the file SNDK.reg and save it to your desktop.
If you experience any issues after editing the registry, you can restore this backup by following steps 1 through 3, but choosing File > Import instead. Choose the SNDK.reg file that you backed up, allow it to import, then restart your PC.
Step 2. Remove SanDisk info from the registry
WARNING: DO NOT delete any registry keys other than keys that include VID_0781, the SanDisk device’s keys. Deleting important registry keys can result in booting issues and other system malfunctions.
1. From the registry menu, click 'Edit' and choose 'Find'.
2. Type in VID_0781 and click 'Find' Next.
3. Once the search finishes, right-click the highlighted registry key and select 'delete'.
4. Press the F3 key to find the next registry key that includes VID_0781.
5. Right-click the highlighted registry key and select 'delete'.
6. Repeat this process until the search returns with No results Found.
NOTE: Under Windows 7, 8 and Vista, some registry keys may be protected and cannot be deleted. Simply skip over these keys if you receive a message that the key cannot be deleted.
7. Once all registry keys containing VID_0781 have been deleted, reboot your computer.
8. Plug the device into the computer after it's finished rebooting. The device will be reinstalled.
If you have trouble completing this process, there is another way that you can try to fix a USB flash drive not showing up in another way.
Why Format SanDisk USB Drive?
As we all known, a storage device like a hard disk can be formatted (also namedinitialized) into areas called sectors, tracks, and clusters, create a spaceallocation table simultaneously. Then we will know how these data is stored on thatdisk. And most important, format a used hard disk will erase all the data on thatdisk, then you can store other documents for some purposes.
SanDisk is a famous storage device manufacturer found in America, which producememory cards, readers, USB flash drive, solid state drive (SSD), and more. It’s thethird-largest manufacturer of flash memory as to February 2015. By the way, otherUSB flash drives like Kingston, Transcend, HP, Corsair, PNY drives are also wellliked.
Why format SanDisk USB flash drive? There are some reasons should be responsible forthat question:
Initialize the SanDisk USB flash drive for the first use.
Remove write protection for a write protected (Read-only) SanDisk USBdrive.
Convert SanDisk USB drive file system from one format to another for certainreason, common file system for storage devices include FAT, FAT32, exFAT andNTFS.
Repair the SanDisk with a corrupted file system.
However, you have to know, the SanDisk USB drive will not work properly if itformatted with impropriety USB disk storage format tool. Therefore, How to formatSanDisk USB flash drive correctly and efficiently? In our post, you will find thebest SanDisk USB format tool to realize.
Format SanDisk USB with The Best Free SanDisk USB Format Tool
Well, we are going to introduce you the best SanDisk USB format tool in Windows7/8/10, this freeware called AOMEI PartitionAssistant Standard, which is a professional disk partition manager forWindows users. It will help you to perfectly format the SanDisk USB drive, convertSanDisk USB from FAT32 to NTFS without losing data, and vice versa, etc. Here arethe detailed steps to format SanDisk USB in Windows 7/8/10:
1. Connect the SanDisk USB drive with your computer. Freedownload SanDisk USB format tool-AOMEI Partition Assistant Standard, install andlaunch the program to open the main interface.
2. Select Format Partition at the drop down menu afterright click the SanDisk USB flash drive.
3. Choose a desired File System for SanDisk USB drive innext window.
4. Click Apply to perform SanDisk USB flash drive format.
You could use the SanDisk USB format tool to remove writeprotection from SanDisk USB drive as well. In addition, you can convert SanDisk USB drive between FAT32 andNTFS without losing data if necessary, you can follow the instructions toconvert:
1. On the main window, select NTFS to FAT32 Converter atthe left side.
2. Choose FAT32 to NTFS.
3. Pitch on the SanDisk USB drive, hit Next to go on.
4. Click Proceed to convert SanDisk USB from FAT32 to NTFSwithout losing data.
Besides, this SanDisk USB format tool-AOMEI Partition Assistant allows you to create bootable media with SanDiskUSB drive to boot up your PC if required, create a seond partition on SD card/USBdrive, resize partition, copy partition, and more. For more features, please try AOMEI Partition AssistantProfessional, and let it speaks with facts.
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USB flash drives hold everything from personal and medical information to music and pictures and even secure data, with the added advantage of being small and rugged enough for keychain duty.
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Tested with thousands of flash drives (Compact Flash, CF Card II, Memory Stick Duo Pro, SDHC, SDXC, Thumb Drive, Pen Drive) of the following brands, SanDisk, Kingston, Transcend, Corsair, HP, Sony, Lexar, Imation, Toshiba, PNY, ADATA, Verbatim, LaCie, Panda, Seatech, SDKSK9, Silicon Power, IronKey, and HDE.
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From Authorsoft: USB flash drives hold everything from personal and medical information to music and pictures and even secure data, with the added advantage of being small and rugged enough for keychain duty.USB Disk Storage Format Tool utility allows you to quickly and thoroughly format virtually any USB flash drive with your choice of FAT, FAT32, exFAT, or NTFS partition types.
Features: Quick format and safe format. Erase all data and delete space on flash drives that cannot be removed in the traditional way. Remove any tracks of malicious software that may have infected it. Correct partition errors if any. Create volume label for USB disk drives. Scan drive for errors before formatting. Create a FAT32 volume larger than 32 GB.
The software has been tested with thousands of flash drives (Compact Flash, CF Card II, Memory Stick Duo Pro, SDHC, SDXC, Thumb Drive, Pen Drive) of the following brands, SanDisk, Kingston, Transcend, Corsair, HP, Sony, Lexar, Imation, Toshiba, PNY, ADATA, Verbatim, LaCie, Panda, Seatech, SDKSK9, Silicon Power, IronKey, and HDE. USB Disk Storage Format Tool is the free USB flash drive tool that brings enhanced power and capability to your Windows system at no cost. We recommend the freeware to anyone who uses flash drives.