So, I came to HDPARM of linux in the hope that it will wipe my HDD 100% clean so that i can install windows again on a 100% clean hard drive. Saw that HDDErase made by CMRR can remove DCO and HPA, if present. Later came to know that DBAN does not kill HPA (host protected area) and DCO (Drive configuration overlay) which are "hidden areas" (if present) in a hard drive. So, wiped drive with DBAN foolishly (PRNG, 8 pass). Malware in windows (yes), possibly rootkit/bootkit.
Because the Secure Erase command is carried out within hard disk drives, no additional software is required either.I've been reading some posts/comments around the 'net about this topic and was wondering if anyone has encountered a situation similar to this post that I read at another site ↓ SE is a simple addition to the existing “format drive” command present in computer operating systems and storage system software, and adds no cost to hard disk drives.
Secure erase is a positive easy-to-use data destroy command, amounting to “electronic data shredding.” Executing the command causes a drive to internally completely erase all possible user data record areas by overwriting, including g-list records that could contain readable data in reallocated disk sectors (sectors that the drive no longer uses because they have hard errors). A standardized internal secure erase command also exists for SCSI drives, but is optional and not currently implemented in SCSI drives tested. The SE command is implemented in all ATA interface drives manufactured after 2001 (drives with capacities greater than 15 GB), according to testing by CMRR ( see note #1). Secure erase is built into the hard disk drive itself and thus is far less susceptible to malicious software attack than external software utilities. The ANSI T13.org committee oversees the ATA interface specification (also called IDE) and the ANSI T10.org committee governs the SCSI interface specification. The Secure Erase (SE) command was added to the open ANSI standards that control disk drives, at the request of CMRR at UCSD.
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