Yesterday, I received a list that almost did not report too much hope. A 5G-sized partition in the Western Digital 80G hard drive could not be opened. The customer immediately formatted and then entered about 4G of data into the partition. When you realize that the data is lost, you are worried about the impact of subsequent data recovery, and then delete the data that you later entered. The customer said that the recovery was done at the Zhongguancun counter before, telling the data structure was destroyed and the data could not be recovered. Due to the importance of the data, the customer decided to take it to the Si Data Recovery Center and try to recover it. After communicating with the customer, in the case of serious coverage, I did not take the software to scan, because the original partition is relatively small, and the current directory structure after overwriting must have been severely damaged. In this case, the scan results It must be incorrect. (After viewing the data stratum, the location of the normal MFT is covered by other data, some screenshots are shown below) Therefore, we chose to directly locate the file header based on the required data type and other relevant information provided by the customer, and extracted it according to the file type using WIXHEX. First of all, the recovery of JPG pictures. When the process reached 80%, only a few engineering pictures came out. I thought that there might not be much hope, but surprises often happen in this situation. The last 20% came out with 450 pictures, all of which are some pictures of children, which should be the data needed by customers. It is verified that each picture still has a relatively small thumbnail and an identical copy, so the pictures that are actually available come out There are about 150 photos. Next, according to the same scheme, WORD, XLS, PPT and other documents were extracted accordingly. Although there are not many, they can be opened normally. In the end, the amount of all recovered data is 445M. After verification, the customer thinks that the required data is still partly recovered, and finally approves the data. Case summary: Similar to such a list, the first reaction in communication with customers may be basically hopeless, because too much data is covered, and the important structure of the data is almost destroyed. When data is written to disk, it will be written according to a certain allocation strategy, which may be continuous or scattered. In this case, all files can be restored to normal files, mainly because the files are written in the partition. After the location, and most of the cases are continuous storage, so the recovery structure is very unexpected. About Darth Data Recovery and Forensics Center Darth Science and Technology, a national high-tech enterprise, the only cooperative unit of Tianjin State Secrets Bureau's secret carrier data recovery, a project undertaker of the sensitive information inspection system project of commonly used office equipment storage components of the State Secrets Bureau, a well-known brand in the data recovery and forensics industry, in Domestic and even Asia's leading data recovery technology! The full name of Darth Technology is Darth Carey Technology (Beijing) Co., Ltd., established in August 2007 with a registered capital of 15 million yuan. Darth Technology is a national high-tech enterprise with data recovery and forensic technology research and development as the core. The company has more than 30 data recovery and forensics software with independent intellectual property rights. The company has R & D center, data recovery and forensics service department, server RAID data recovery emergency center, etc.
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An accidental recovery of Darth Data Recovery