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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. However, certain tools can be used to modify the HPA or DCO.
Disk Cloning Software Disk cloning capabilities of various software. Name Operating system User Interface Cloning features Operation model License; Windows Linux MacOS Live OS CLI GUI Sector by sector [a] File based [b] Hot transfer [c] Standalone Client–server; Acronis Cyber Protect Home Office [1] [d] Yes No Yes: Yes (64 MB) No Yes Yes
Disk cloning is the process of duplicating all data on a digital storage drive, such as a hard disk or solid state drive, using hardware or software techniques. [1] Unlike file copying, disk cloning also duplicates the filesystems , partitions , drive meta data and slack space on the drive. [ 2 ]
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.
In the case of the latter, however, the computer will not be able to boot, even into safe mode. [2] [3] The only way to resolve this problem is to boot into another device and then uncompress the files from it to make the system bootable again. In late 2009, several new reports of the black screen in Windows XP, Windows Vista, and Windows 7 ...
A disk image is a snapshot of a storage device's structure and data typically stored in one or more computer files on another storage device. [1] [2]Traditionally, disk images were bit-by-bit copies of every sector on a hard disk often created for digital forensic purposes, but it is now common to only copy allocated data to reduce storage space.
In the example 2 above, GRUB 2 stores its core.img in a BIOS boot partition. When used, the BIOS boot partition contains the second stage of the boot loader program, such as the GRUB 2; the first stage is the code that is contained within the Master Boot Record (MBR). Use of this partition is not the only way BIOS-based boot can be performed ...
The active partition is the partition where the boot flag is set. DOS and Windows allow only one boot partition to be set with the boot flag. [4] Other boot loaders used by third-party boot managers (such as GRUB or XOSL) can be installed to a master boot record and can boot primary or extended partitions, which do not have the boot flag set.