HDD Scan is a free program for diagnostics on low-level HDDs.
You will know that there are two types of formatting discs, on the one hand we have the high level and on the other the low level. In the first one, the disk is written as many times as necessary to absolutely erase all the traces that the files may have left on the disk. In the low level one writes on the files so that it deletes them but under the most recent writing layer we can find the previous layers. In this type of disks it is possible to recover the information that we have lost.
This program will perform a complete diagnostic of your disk if it is formatted at a low level and you will get a list of features, attributes and settings.
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