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Contents contributed and discussions participated by Phil Ashman

Phil Ashman

Large collection of Free Microsoft eBooks for you, including: SharePoint, Visual Studio... - 0 views

    Free Microsoft eBooks
Phil Ashman

Enabling large disks and large sectors in Windows 8 - Building Windows 8 - Site Home - ... - 0 views

  • maximum capacity of a single hard disk drive will increase to 8TB by 2015.
  • The Master Boot Record partition table (MBR) scheme was invented at the time, which allowed for up to 32-bits of information to represent the maximum capacity of the disk. Simple math informs us that the largest addressable byte represented via 32 bits is 232 or 2.2TB.
  • GPT allows for up to 64-bits of information to store the number that represents the maximum size of a disk, which in turn allows for up to a theoretical maximum of 9.4 ZettaByte (1 ZB = 1,000,000,000,000,000,000,000 bytes).
  • ...4 more annotations...
  • UEFI was designed from the ground up to work with very large capacity drives by utilizing the GUID partition table, or GPT
  • that is, a lot of the space in the current 512-byte sector is being used to store ECC information instead of being available for you to store your data. This, among other things, has led to the introduction of larger sector sizes.
  • Disks with this emulation layer to support unaligned writes are called 4K with 512-byte emulation, or “512e” for short. Disks without this emulation layer are called “4K Native.”
  • Learning from some issues identified with prior versions of Windows, AF disks have been a key design point for new features and technologies in Windows 8; as a result, Windows 8 is the first OS with full support for both types of AF disks – 512e and 4K Native.
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