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Differences between MBR and GPT

Aug 6, 2012 | Posted by admin | PC Support Tips and Tricks | 0 comments |

MBR (Master Boot record)

  • use LBA (logical Block Address) 32bit addressing
  • support up to (2^32 x 512 = 2.19Tb using 512byte sectors
  • support 4 primary partition table

GPT (Guid Partition Table)

  • support more than 2Tb
  • use UEFI (Unified Extensible Firmware Interface)
  • support up to (2^64 x 512 = 9.4Zb) (Microsoft OS support up to 256Tb)
  • support 128 primary partition table
  • provides redundancy by writing the GPT header and partition table at the beginning of the disk and also at the end of the disk.

Notes

  • 32-bit Microsoft Windows™ will not provide bootable disk support for GPT, only 64-bit OS has support. Need machine that support UEFI BIOS.
  • For MS Windows, both 32bit/64bit can support GPT Data Storage support
  • For XP, 32bit cannot support both boot/data disk, 64bit support data disk only.
  • For Windows 2003, all can support data disk only.
  • For Windows 2000,NT, W98, W95, cannot support data/boot disk

http://msdn.microsoft.com/en-us/library/windows/hardware/gg463525.aspx#GPT1

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    • QNAP Products
      • Qnap NAS – HOME and SOHO
      • Qnap NAS – Expansion
      • Qnap NAS – SMB Small Medium Business
      • Qnap NAS – Enterprise
      • Qnap NAS – Demo
    • Guides
      • Basic Linux Commands
      • How To Complete Reset / ReInstall Qnap
      • ISCSI Lun Recovery
      • Qnap Benchmark, Lun Speed & Stability Test
      • Qnap Data Recovery
      • Qnap Firmware Reflash / Recovery
      • Qnap Raid Recovery
      • What is Stress Test and How to Do Guide
    • Features
      • Cross-platform sharing
      • Windows Active Directory (AD)
      • Shared folder aggregation
      • ISO mount
      • Batch user upload
      • High-performance data sharing
      • FTP server
      • Web File Manager
      • Network service discovery
      • Web-based Distributed Authoring and Versioning (WebDAV)
    • FAQs
      • Cannot Access to Shared Folders
        • Qnapfinder Cannot Find My NAS
      • Filename Characters Are Corrupted
      • Forgot Admin Username and Password
      • Hard Disk Drive Error
      • How to Start / Stop Services on Qnap
      • ISCSI Luns are not exist under .@iscsi folder
      • Meaning Of Led Lights and Alarm Sounds
      • Qnap Becomes Unreachable When I Plug Qnap to My Network
      • Qnap ISCSI Problems & How to Fix
      • Qnap ISCSI Lun Lost and How to Restore
      • RAID System Errors
      • Reset Button Function
      • Stuck At Booting / Loading Drive Error
      • Warning : Re-Launch Process & The File System Is Not Clean
      • What is RAID? Redundant Array of Independent Disks
    • Contact Us
    • Locate Us
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