Delkin Blog

Purpose of Write Protection

Write protection is a feature on flash storage cards and other forms of flash memory that prevents data stored on the card from being deleted and new data from being added. It exists to ensure that you cannot inadvertently write over critical data or delete data to make space to write new files. When write protection is activated, you will be able to read data on the card-only write operations are blocked.

For some applications that are only used for read operations after an initial data loading, such as those used in gaming, the feature can be helpful to have, since it prevents any data changes that could interfere with the way the game operates. For other flash storage users, however, write protection prevents normal data saving procedures from occurring.

The write protection feature on a flash storage device exists so that important data is not written over and permanently replaced by newer data within a writable storage block within the device, and you will not be able to save new data if the storage capacity is full. If the flash storage card is being used in an application that continually writes new data and replaces older data, such as security camera footage or certain transportation applications, then you will want to ensure write protection is disabled.

Write protection is an important feature that keeps your files safe when it is used appropriately, and it offers another level of data protection that can be especially valuable for industrial applications with mission-critical information that cannot be deleted.

Taking Flash Storage Out of Write Protection Mode

If you get a write-protected message when trying to save files, the fix is simple and fast to complete. If the storage card is embedded and cannot be removed, you can turn off write protection using a variety of different command actions. The exact procedure you need to use will depend on your operating system and host device.

When you try to save data with write protection, you will likely receive an error message. If this occurs and you can remove the memory card, look at the side of the card where the lock switch is located. This switch should be in the unlocked position. In some cases, the lock may be too loose, allowing it to move back into the locked position when you reinsert it into the host device. If this happens, then you may need a replacement to prevent the issue in the future.

Delkin is Here to Help

If you are experiencing write protection errors, we are here to help. Our customer support team can remedy any challenges and can help determine the best solution for your industrial flash storage needs. Contact us today.

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