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Accessing SD cards through ADMA in Windows 7 may cause data loss

The ADMA (Advanced Direct Memory Access) is a controller for controlling communication between your computer and SD (Secure Digital) card. This mechanism allows you to transfer data quickly and easily. But in some situations, using this configuration may damage the memory card and lead to critical data loss situations. Under such circumstances, go to the SD Card Recovery solutions to get your valuable data back.

Consider the following scenario

You have an SD card is formatted with the NTFS file system. You use the ADMA to transfer data between your memory cards and the computer running Microsoft Windows 7 But while transferring data via this method, the logical structure of memory card and the data on the card being damaged. In addition, unexpected problems also occur when you try to use memory card or corrupted data.

Because of the problem

During the advanced Direct Memory Access transfer process Sdbus.sys Secure Digital (Bus Driver) converts DMA metadata structure in Windows 7 operating system for ADMA metadata structure SD card. The ADMA and DMA metadata structures are also called descriptor tables. The descriptor table is a buffer address and a data length value.

The maximum size Data length field is 64 kilobytes (KB), and its value is 16-bit. But when the data conversion procedure goes on, it means Sdbus.sys drive does not control the size of the buffer descriptor table in your Windows System 7. Thus, SecureDigital Bus Driver Wrong data length in SD descriptor table. For example Sdbus.sys run dataset length greater than 0xFFFF. In this scenario, the input / output errors also occur. Throughout this behavior leads to severe data loss situations.

Solution

To avoid such situations and use of SD Card Recovery, Microsoft gave an update to fix memory corruption in Windows 7 But if your data is lost already, you need to recover from the recent return.

In case if your back is not updated or not available on all SD Cards Recovery software is required. Applications methodically scan the entire SD card using high-end scanning algorithms and extract all lost pictures, songs and Videos.

The SD card file recovery applications are self-descriptive interface to provide ease of use. With read-only and non destructive behavior, these programs are completely safe to use.

Stellar Phoenix Photo Recovery (Windows) is a comprehensive program to ensure a successful recovery of all lost photos. The software works well with Microsoft Windows 7, Vista, XP, 2000 and NT. It supports all major cameras as Nikon, Canon, Kodak, Sony, Fuji and Olympus.

About the Author

Andrew Watson has 6 Years of Experience in the Software Technology field doing research in Stellar Info System Ltd which offers memory card recovery software and card recovery software.

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