Data covering the meaning?
Data coverage refers to the computer, because data is pasted so that the original occupied by the existing data, is said to be covered, so that the original data disappear; when we store a file, the operating system first in a record of all space usage table, to find enough space to accommodate the new file, and then writes the contents of the file on the hard disk sector corresponding to the last in the table marked the space is occupied. When you want to delete a file, the file is generally not the actual occupied sector to operate, but only those specified in the table space is empty, it can be allocated to other files.
In this case, the actual content of the deleted file is not damaged can be restored back. But after deleting the files, and re-create the file, then occupied by the deleted file sectors is likely to be used by the newly created file, then you can not recover files deleted the original.
Determine whether the data coverage?
1. Format hard
if we are to hard disk formatting, no other operations, then after that format the hard drive just cleared the data, no data is overwritten.
2. format the hard drive and the data stored in the new
case should be based on the amount of data stored in its decision. If the stored data is relatively small, then also be able to recover some data, on the contrary, it will completely cover up the data before, in which case the data can not be recovered.
3. format the hard drive and install the operating system
issue in this case is more serious, the destruction of their directory structure at the same time the data is overwritten, the basic hard data recovery, and even recover some data will be lost file name and storage path.
4. Data Delete the new data is not stored in
this case just delete the data will not have data coverage, it is completely restored.
5. Data deleted and new data is written
this situation will cause some data is overwritten, restore or increase the difficulty of data can not be recovered.
After determining whether the data belongs to our data coverage, if not, at this time we can through the mini rabbit data recovery software to recover deleted data operations.