How is data stored on HDD and SSD, and how does that change the way data is securely erased from them?
In: Technology
Data stored on SSDs requires an electric charge to be maintained; over long enough periods of time without electrical power, the charge will dissipate, wiping it’s contents.
On a hard drive, data is written on magnetic particles on the disk by changing it’s magnetic characteristics to north and south, one representing a 1 and the other a 0. On hard drives, data is written to a table of contents. Deleting a file simply clears the entry in the table of contents, but the data is still on the drive. There is software you can buy to scan every sector of the drive to rebuild any deleted files that haven’t been overwritten.
Latest Answers