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Hibernation (also known as suspend to disk, or Safe Sleep on Macintosh computers [1]) in computing is powering down a computer while retaining its state.When hibernation begins, the computer saves the contents of its random access memory (RAM) to a hard disk or other non-volatile storage.
Sleep on macOS consists of the traditional sleep, Safe Sleep, and Power Nap. In System Preferences , Safe Sleep [ 8 ] is referred to as sleep. Since Safe Sleep also allowed state to be restored in an event of a power outage , unlike other operating systems, hibernate was never offered as an option.
In Windows NT, the booting process is initiated by NTLDR in versions before Vista and the Windows Boot Manager (BOOTMGR) in Vista and later. [4] The boot loader is responsible for accessing the file system on the boot drive, starting ntoskrnl.exe, and loading boot-time device drivers into memory.
It does not require using a command-line interface or other method to launch software. It was common for self-booting disks to use non-standard disk formatting, so the contents could not be viewed or copied via a system's normal disk operating system. They could still be copied by other utilities.
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It replaced the NTLDR present in older versions of Windows. The boot sector or UEFI loads the Windows Boot Manager (a file named BOOTMGR on either the system or the boot partition), accesses the Boot Configuration Data store and uses the information to load the operating system through winload.exe or winresume.exe on BIOS systems, and winload ...
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Before Windows 7, the system and boot partitions were, by default, the same and were given the "C:" drive letter. [7]: 971 Since Windows 7, however, Windows Setup creates, by default, a separate system partition that is not given an identifier and therefore is hidden. The boot partition is still given "C:" as its identifier.