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A block, a contiguous number of bytes, is the minimum unit of storage that is read from and written to a disk by a disk driver.The earliest disk drives had fixed block sizes (e.g. the IBM 350 disk storage unit (of the late 1950s) block size was 100 six-bit characters) but starting with the 1301 [8] IBM marketed subsystems that featured variable block sizes: a particular track could have blocks ...
Windows Vista has support for hard disk drives with large physical sector sizes (> 512 bytes per sector drives) if the drive supports 512-bytes logical sectors / emulation (called Advanced Format/512E). [48] Drives with both 4k logical and 4k physical sectors are not supported.
The minimum cache size is 250 MB. In Vista or with FAT32 formatting of the drive, the maximum is 4 GB. In Windows 7 or later with NTFS or exFAT formatting, the maximum cache size is 32 GB per device. Windows Vista allows only one device to be used, while Windows 7 allows multiple caches, one per device, up to a total of 256 GB. [5]
The Differencing hard disk image format allows the concept of Undo Changes: when enabled, all changes to a hard drive contained within a VHD (the parent image) are stored in a separate file (the child image). Options are available to undo the changes to the VHD, or to merge them permanently into the VHD.
To format the main hard drive (the drive containing Windows), the user must boot the computer from a Windows installation disc or choose the menu item "Repair Your Computer" from the Advanced System Recovery Options by pressing F8 upon turning on the computer.
In computing, format is a command-line utility that carries out disk formatting. It is a component of various operating systems , including 86-DOS , MS-DOS , IBM PC DOS and OS/2 , Microsoft Windows and ReactOS .
Disk Diagnostics detect impending hard disk drive failures and prompt the user to perform backups, and to repair or replace the hard disk drive after Windows Vista detects a hard disk problem. [14] Memory Diagnostics (comprising the Windows Memory Diagnostics Tool) check for issues caused by random access memory modules. [14]
Hybrid hard drives are a type of hard disk that integrates non-volatile flash memory with a traditional hard drive. The drive-side functionality is expected to be standardized in ATA -8. When a hybrid hard drive is installed in a Windows Vista machine, the operating system will display a new "NV Cache" property tab as part of the drive's device ...