![]() This is what our logical engineers expected to see when we received this client’s memory card for SanDisk SD card recovery. A skilled logical data recovery engineer, such as the experts in our employ here at Gillware, can typically uncover that deleted file relatively easily as long as no new data has overwritten it since the time of deletion. Instead, what the filesystem does when you ask it to delete something is simply to sever the logical links which point to the file. Normally, when you delete a file, it hasn’t gone away forever. ![]() Type of Data Recovered: Photos and VideosĪccidental file deletion is a kind of logical damage that can affect a data storage device. SanDisk SD Card Recovery Case Study: Deleted Photos Our engineers suspected that these data management routines may have been responsible for making this SD card appear blank. ![]() These data management subroutines carry themselves out beneath the surface of the device, away from prying eyes. Soon, computer scientists figured out how to erase EEPROM in chunks, instead of erasing the whole device at once. In the evolution of flash memory, one could call EEPROM the “missing link” between read-only memory and flash memory as we know it.īecause of NAND’s unique properties, the data inside the chips must constantly be rearranged and organized using special data management subroutines so that it can function more like the magnetic media we are all more familiar with. Unlike traditional ROM, you could erase and reprogram EEPROM using electrical current. Modern NAND flash memory grew out of EEPROM, or “electrically erasable programmable read-only memory”. The methods for electronic data storage differ wildly from magnetic data storage. NAND flash memory can fit mind-boggling amounts of data-up to 512 GB-into a single tiny microSD-sized package. Every portable device today stores its data in NAND flash memory chips. When you need a lot of data in a tiny amount of space, you turn not to magnetic data storage, but to electronic data storage. ( The smallest hard disk drive ever invented, by comparison, was about the size of a postage stamp, and could only fit about 12 gigabytes worth of data.) The mechanical components necessary to store data magnetically simply cannot be miniaturized to the point where a hard drive can comfortably fit on your fingernail. Obviously, your memory cards do not store data the same way your hard drive does. 2 SanDisk SD Card Recovery Results What Makes Flash Different From Disks?
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