Originally shared by Dragos Ruiu
Host Protected Area: the hidden section on your disk drive accessible by using addresses past the end of your drive (which your OS usually doesn’t let you do).
https://en.wikipedia.org/wiki/Host_protected_area
Tools to manipulate this hidden area:
– HDAT2 https://www.hdat2.com/
– hparemove (not found)
– MHDD http://hddguru.com/software/2005.10.02-MHDD/
– TAFT http://www.vidstrom.net/stools/taft/
– hdaparm Windows https://sites.google.com/site/disablehddapm/ (and hdaparm Linux)
– IBM.Hitachi Drive Feature Tool http://hddguru.com/software/2006.01.20-Hitachi-Drive-Feature-Tool/
– Sleuth Kit http://www.sleuthkit.org/
– FreeBSD hw.ata.setmax sysctl