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Device configuration overlay (DCO) is a hidden area on many of today's hard disk drives (HDDs). Usually when information is stored in either the DCO or host protected area (HPA), it is not accessible by the BIOS (or UEFI), OS, or the user.
The name of these shares consists of the drive letters of shared volume plus a dollar sign ($). For example, a system that has volumes C, D and E has three administrative shares named C$, D$ and E$. (NetBIOS is not case sensitive.) OS folder: The folder in which Windows is installed is shared as admin$
If the value in the register is set to less than the actual hard drive size then effectively a host protected area is created. It is protected because the OS will work with only the value in the register that is returned by the IDENTIFY DEVICE command and thus will normally be unable to address the parts of the drive that lie within the HPA.
Restart the computer • If you haven't recently restarted your computer or you don't restart your computer very often, we recommend that you restart the computer. This helps clear the internal memory (RAM), which often resolves many issues.
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To maximise the likelihood of installation success, AutoRun also acts when the drive is accessed ("double-clicked") in Windows Explorer (or "My Computer"). Until the introduction of Windows XP , the terms AutoRun and AutoPlay were used interchangeably, developers often using the former term and end users the latter.
DOS 5.0 and higher will ensure that it will become drive C:, so that the boot drive will either have drive A: or C:. Assign subsequent drive letters to the first primary partition upon each successive physical hard disk drive (DOS versions prior to 5.0 will probe for only two physical hard disks, whereas DOS 5.0 and higher support eight ...
Keeping your account safe is important to us. If you think someone is trying to access or take over your account, there are some important steps you need to take to secure your information.