Patch For Sdhc Cards

Does your SD card gets corrupted or inaccessible? To fix or repair your device, you have lots of solutions available. However, I suggest you analyze the symptoms of your memory SD card/USB/HDD/SSD and the find the right fixes to the problems. This article will be divided into two parts to analyze and solve your SD card problems.

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PAGE CONTENT:
Part 1. Simple Steps to Repair the SD Card
Part 2. Advanced Solutions to Repair Corrupted SD Card

Part 1: Simple Steps to Repair the SD Card

This user runs into the situation, in which SD card is not accessible but reports access is denied error message. The Device Manager can recognize it and its capacity.

Symptoms:

  • The SD card shows warning information access is denied.
  • Your Device Manager can recognize the SD card's capacity, but you still can't access it.

When PC pops up the Windows containing alert that device is inaccessible, you can follow the two steps to fix the problem, namely recovering data and repair the corrupted sd card. Remember to retrieve data first and then format it to avoid data loss.

Method 1: Recover Data from the Inaccessible SD Card

An inaccessible micro SD card makes almost everybody upset, especially when the card contains lots of critical data. The best SD card recovery software can help resolve the problem because it allows you to get back data from any storage device even if it becomes inaccessible or unreadable.

Step 1: Connect the SD card to your PC

Step 2: Run the EaseUS Data Recovery Wizard. Select the location of the write protected/corrupted device, click 'Scan'.

Step 3: Preview and restore files and data. You can preview and select found data and click Recover to save found data to a safe spot on your PC or external storage device.

Method 2: Format the Corrupted/Inaccessible SD Card to Repair it

If your Disk Manager can recognize your SD card, you still cannot access the SD card. To restore the card to its normal working state, you have to fix it. Format the SD card with EaseUS Partition Master is an excellent choice.

Compared with the Windows utilities and Diskpart command line, using software, here we say EaseUS Partition Master, is the same free, what's more, comes handy when Windows was unable to complete the format, Diskpart has encountered an error access is deniedand however you try you just can't format SD card completely.

Steps to Format your SD card:

Step 1: Open EaseUS Partition Master. Find your SD card and right-click the partition you want to format and choose 'Format'.

Step 2: Set a new partition label, file system (NTFS/FAT32/EXT2/EXT3), and cluster size to the selected partition, then click 'OK'.

Step 3: Click 'OK' on the pop-up window to continue.

Step 4: Click the 'Execute Operation' button on the toolbar, then click 'Apply' to start formatting your SD card.

Part 2: Advanced Solutions to Repair Corrupted SD Card

What if your SD card shows other error messages? What if your SD card is write-protected or the Disk Manager fails to recognize the SD card's capacity?

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Symptoms:

  • The SD card is locked or write protected
  • The memory card is not recognized by the computer
  • You are unable to open, read, write, copy, delete or modify any file or folder on the SD card.
  • OS shows reading errors doesn’t respond when you try to connect your SD card to the computer

Possible Reasons:

  • Micro SD card is virus infected
  • There are bad sectors on the micro SD card
  • Your computer is unable to assign drive letters (like C, D, E) to your storage media
  • Micro SD card is physically damaged due to improper operation or other reasons
  • More other unknown reasons

According to the reasons above, you can try these methods below to repair the corrupted SD card.

Method 1: Run Antivirus Software

Connect your SD card or USB drive to your computer and let the antivirus software scan your external device and repair it.

Method 2: Change the Drive Letter

Here are the simple steps to fix the corrupted pen drive or memory card by assigning a correct drive letter:

Step 1: Connect your storage media to your computer.

Step 2: Open 'Disk Management' (You can search it or right-click 'This PC')

Step 3: Right-click on your storage media and click 'Change Drive Letter and Paths'.

Step 4: Select the drive letter from the drop-down list. Click 'Ok'.

Method 3: Try Another USB Port or Computer

It sounds strange, but you’re wasting your time if you repeatedly try to connect your SD card or flash drive to a single USB port on your computer. Try another USB port.

Maybe the issue only occurs on your PC, and that’s why you find trouble in running the USB flash drive. Try connecting your SD card or pen drive to another computer. Hope it works, and you’ll be able to back up your data from it.

Method 4: Fix/Repair the SD Card by Using CMD

Step 1: In Windows 10, for example, type cmd in the search box, you can get the best match called Command Prompt. Right-click on it and choose 'Run as administrator'.

Step 2: On the Command Prompt window, type diskpart and press 'Enter'.

Step 3: Type list disk and press 'Enter'. According to the list disk information, check which disk is your SD card.

Step 4: Now type select disk (the number of your disk) for example, disk 2 and press Enter.

Step 5: Type clean. Wait some time for disk erasing.

Step 6: Type create partition primary and press 'Enter'.

Step 7: After Diskpart successfully created the specified partition, type format fs=ntfs, and press 'Enter'. If you prefer other file system formats, change the command ntfs to the desired one such as fat32, exfat, etc.

Method 5: Ask Professional Repair Tool for Help

If your SD card has the I/O device error, you may have a rare chance to repair the corrupted SD card. But you can still try the USB production tool to repair the corrupted memory card. You can search the internet and find one to try.

Last Advice: There are chances that the warranty of your corrupted USB drive or SD card is still valid. So, if your storage device is giving you problems, again and again, it’s advisable to invest some effort and go for a refund or replacement. I'am agree with this as it’s not worth putting your faith in a USB drive that’s showing signs of unreliability again and again.

There are three main types in the SD memory card family. SD, SD High Capacity (SDHC™), and SD Extended Capacity (SDXC™). This article details the different specifications of all three types of SD memory cards and the speed class ratings and compatibilities that are different with each type.
Click here to jump straight to Speed Class & UHS Speed Class Ratings
Click here to jump straight to the Compatibility Summary

Additional Reference: SD Assocation Consumer Information


SD capacities range from 128MB to 2GB
Default Format: FAT16
SD cards will work in all host devices that support SD, SDHC, or SDXC


SD High Capacity (SDHC™) card is an SD™ memory card based on the SDA 2.0 specification.
SDHC capacities range from 4GB to 32GB
Default Format: FAT32
Because SDHC works differently than standard SD cards, this new format is NOT backwards compatible with host devices that only take SD (128MB - 2GB) cards. Most readers and host devices built after 2008 should be SDHC compatible.
To ensure compatibility, look for the SDHC logo on cards and host devices (cameras, camcorders, etc.)


SD Extended Capacity (SDXC™) card is an SD™ memory card based on the SDA 3.0 specification.
SDXC capacities range from 64GB to 2TB
Default Format: exFAT
Because SDXC uses a different file system called exFAT and it works differently than standard SD cards, this new format is NOT backwards compatible with host devices that only take SD (128MB to 2GB) or host devices that only take SDHC (4GB to 32GB). Most host devices built after 2010 should be SDXC compatible.

To ensure compatibility, look for the SDXC logo on cards and host devices (cameras, camcorders, etc.).

NOTE: Internal card readers on laptops from 2008 and prior may NOT support SDXC cards. SDXC cards will work in SDHC compatible readers (not SD readers) if the computer OS supports exFAT. For more information on exFat see: Operating Systems that support the exFAT File System


Ultra High Speed, Phase I (UHS-I) bus design for SDHC and SDXC cards was added in SD spec 3.0. This is a design enhancement to increase the performance of SDHC/SDXC cards.
UHS-I specification defines two bus architecture options for up to 50MB/s (UHS-50) and 104MB/s (UHS-104) data transfer rates. These are theoretical maximum limits and actual maximum performance for a specific card is defined on it label or in advertising.
UHS is an enhancement to the original SD interface specifications. Host devices will obtain the UHS maximum speed when both the card and host device support UHS. Otherwise, the host device and card will use the slower SD maximum speed obtainable.
There is no compatibility problem using a UHS card with a non-UHS device.


Ultra High Speed Phase II (UHS-II) bus design for SDHC and SDXC was added in SD spec 4.0. This is an additional design enhacement with connector interface modifications to increase performance.

UHS-II specification defines bus architecture for options of 156MB/s and 312MB/s. Manufacturers implemented the 312MB/s option in memory cards. These are theoretical maximum limits and actual maximum performance for a specific card is defined on the label or in advertising.

Host devices will obtain the maximum UHS-II speed when both the card and the host device support UHS-II. Otherwise, the host device and card will use the highest compatible UHS-I or SD bus speed.

There is no compatibility problem using a USH-II card in a UHS-I or non-UHS device.


Speed Class & UHS Speed Class Rating
Speed class ratings define a minimum guaranteed speed of SDHC/SDXC cards. Speed class rating is important for HD video mode or camcorders, where the device is actually saving a steady stream of data. The resolution and format of the video determines the amount of steady stream data. You should consult your camera user manual for minimum speed class requirements for HD video modes.

Speed Class (SD Bus)

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Class

Minimum Speed

2

2MB/s

4

4MB/s

6

6MB/s

8

8MB/s

10

10MB/s


UHS Speed Class (UHS Bus)

UHS Class

Minimum Speed

1

10MB/s

3

30MB/s


For a more detailed explanation of speed class see: Difference between Speed Class, UHS Speed Class, and Speed Ratings..
SD Association: Speed Choices


Compatibility Summary
The chart below shows the host device and the memory cards supported.

Host device
(ex. cameras, video recorders, phones, readers, etc.)
Memory cards supported
© images by sdcard.org
SDXC cards and host devices
- SDXC memory cards can ONLY be used with SDXC host devices.
- SDXC memory cards will NOT work with SD / SDHC host devices.
Additional info on SDXC cards and host devices
- SDXC host devices can use and support SD, SDHC and SDXC memory cards.
- SDHC host devices can use and support both SD and SDHC memory cards.Patch
- SDHC memory cards can be used with SDHC and SDXC host devices.