用啲 Windows ISO 寫爆佢,之後寫 0 一次之後再寫其他垃垃雜雜嘅細檔案寫爆佢(例如係討論區嘅表情包),之 ...
保時捷 發表於 2021-11-29 11:50 
現代硬碟只需一次Secure erase就足夠
https://en.wikipedia.org/wiki/Data_erasure#Number_of_overwrites_needed
- According to the 2014 NIST Special Publication 800-88 Rev. 1, Section 2.4 (p. 7): "For storage devices containing magnetic media, a single overwrite pass with a fixed pattern such as binary zeros typically hinders recovery of data even if state of the art laboratory techniques are applied to attempt to retrieve the data."[24] It recommends cryptographic erase as a more general mechanism.
- According to the University of California, San Diego Center for Magnetic Recording Research's (now its Center for Memory and Recording Research) "Tutorial on Disk Drive Data Sanitization" (p. 8): "Secure erase does a single on-track erasure of the data on the disk drive. The U.S. National Security Agency published an Information Assurance Approval of single-pass overwrite, after technical testing at CMRR showed that multiple on-track overwrite passes gave no additional erasure."[27] "Secure erase" is a utility built into modern ATA hard drives that overwrites all data on a disk, including remapped (error) sectors.[28]
- Further analysis by Wright et al. seems to also indicate that one overwrite is all that is generally required. |