Access to SD card in Windows 7 ADMA can cause data loss

The ADMA (Advanced Direct Memory Access) is a controller to manage communications between your computer and SD (Secure Digital). This mechanism allows you to transfer data quickly and easily. However, in certain situations with this setup, damage your memory card and lead to critical data loss situations. In this case, you must go through the SD card recovery solutions to get your valuable data back.

Consider the following scenario

Memory Card

They have an SD card,formatted with NTFS. Using ADMA for the transfer of data between memory card and the computer running Microsoft Windows 7. But during the transmission of data with this method, the logical structure of the memory map and data are documented. In addition, unexpected problems can occur even when the memory card or damaged data should be used.

Reasons for the problem

During the process of transferring advanced direct memory access, the 'Sdbus.sys Secure Digital (Bus Driver) converts the metadata structure of the DMA operating system Windows 7 to the metadata structure of ADMA SD card. The ADMA and metadata structures are also known as DMA descriptor. The table contains a buffer address descriptor and a data length value.

The maximum length of data field is 64 kilobytes (KB) and its value is 16-bits. However, if the data conversion process continues, the unit Sdbus.sys control the size of the buffer descriptorTable of Windows 7. For example, the bus driver Secure Digital Set an incorrect length of data in the table descriptor SD. For example, the unit Sdbus.sys data set length is greater than 0xFFFF. In this scenario, the input / output errors also occur. The behavior of the whole leads to situations of serious data loss.

Solution

To avoid such situations and the need for the SD Card Recovery, Microsoft has provided an update to solve the problems of memory corruption in Windows 7. But if the dataalready lost, you must restore the younger.

In case if the back is not updated or is not available on SD card recovery software. Methodically scanning applications throughout the SD card with high-end scanning algorithms and extract all the lost photos, music and video. The SD card file recovery applications are self-descriptive user interface offers ease of use. With the behavior of read only and non destructive, these applications are completely safeto use.

Stellar Phoenix Photo Recovery (Windows) is a comprehensive application to successfully recover the pictures back guaranteed. The software also works with Microsoft Windows 7, Vista, XP, 2000 and NT. Supports all popular cameras such as Nikon, Canon, Kodak, Sony, Fuji and Olympus.

Access to SD card in Windows 7 ADMA can cause data loss

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