hidden disk areas

(redirected from DCO)
Also found in: Acronyms, Wikipedia.

hidden disk areas

The host protected area (HPA) and device configuration overlay (DCO) are two areas at the end of SATA and IDE hard disk drives that are only accessible via special utilities but not the operating system, BIOS or general user. Both the HPA and DCO can reside on the same drive, and both areas offer potential storage for hiding small to large amounts of secret data, which forensic analysts must be aware of. See SATA and IDE.

Host Protected Area (HPA)
The HPA can contain boot code as well as diagnostics and other utilities, all of which are specific to each drive vendor. The HPA was added with the IDE/ATA-4 specification (see IDE).

Device Configuration Overlay (DCO)
The device configuration overlay (DCO) lets PC vendors buy drives in a range of sizes from different manufacturers and configure them with the same number of sectors in order to appear the same size to the operating system. The DCO was introduced with the IDE/ATA-6 specification (see IDE).
References in periodicals archive ?
The people of the area have expressed their extreme anger against the cruel and unjust attitude of DCO and demanded the Chief Minister and direct him to abide by the laws.
Earlier, MS Dr Rashid Maqbool also briefed the DCO about various projects and service delivery at hospital.
DCO Hafizabad transferred: Muhammad Ahmad Rajwana DCO has been transferred and has proceeded to UK on ex-Pakistan leave on a scholarship.
Current DCO users must transition to the department's new enterprise collaboration tool, Defense Collaboration Services (DCS), as soon as possible, but no later than May 30, 2015.
Then reaction flasks were disconnected and cooled immediately and all the three products of DCO were filtered and weighed to calculate their yields.
Despite the medical urgency, only on October 26, 18 days after he was initially summoned, the DCO scheduled him for a Shin Bet interview at the Erez Crossing.
DCO Energy is committed to assisting our clients in reducing carbon emissions and addressing energy efficiency so that future generations can enjoy the environmental benefits we all enjoy today," said Frank DiCola, president of DCO Energy.
We'd like to congratulate the Bergen County Utilities Authority's Water Pollution Control Division for being selected as Local Government Partner of the Year," DCO President Frank DiCola said.
The DCO ordered that FIRs should be registered against those involved in quackery and their clinics should be sealed.
The DCO while addressing the meeting said that local administration has plan to establish modern food street to convert Circular Road into a Model Avenue and to install traffic signals at important squares of the city.
An officer, with the condition of annonymity said that DCO is head of the district administration and no one can be posted in the district against his wishes and questioned that who was shielding and sheltering such corrupt officer whose services had been placed at the disposal of Secretary Local Government by the DCO.
Despite a recent visit by Tony Blair, special middle east envoy of the Quartet, where the former Prime Minister assured villagers from At-Tuwani that the DCO gave oral permission to carry out the electricity construction work, the community struggle to bring electricity to the area has been met with ongoing interruptions by the DCO.