how big HD can windows see

Discussion in 'backup, imaging & disk mgmt' started by garry35, Jun 9, 2020.

  1. garry35

    garry35 Registered Member

    Joined:
    Jan 20, 2009
    Posts:
    426
    how big a HD can windows see before extra programs are needed ? i have got windows to work with aq 6tb drive but thatsthe biggest i have, would i need extra programs to use larger drives and if i do what are the recomended progs ?
     
  2. TheRollbackFrog

    TheRollbackFrog Registered Member

    Joined:
    Mar 1, 2011
    Posts:
    4,268
    Location:
    The Pond - USA
    Below are the Windows NTFS limits when using a GPT formatted HDD (Legacy-MBR formatting is limited to 16tB):

    • Maximum disk size: 256 terabytes
    • Maximum file size: 256 terabytes
    • Maximum number of files on disk: 4,294,967,295
    • Maximum number of files in a single folder: 4,294,967,295
     
  3. TheRollbackFrog

    TheRollbackFrog Registered Member

    Joined:
    Mar 1, 2011
    Posts:
    4,268
    Location:
    The Pond - USA
    This needs a bit of explanation. If your disk is formatted using 512-byte sectors, this limit is 2tB. If your disk is using 4k-byte sectors (Advanced Format Technology disks <AFT> only), the disk limit is 16tB. Be aware that many AFT disks are internally formatted as 512-byte sectors <called 512E or 512-byte sector emulation> and these have the 2tB size limitations when formatted as MBR disks.

    All these funny restrictions disappear if the disk is first formatted as a GPT disk (instead of MBR)... at that point the sky's the limit as far as Windows and the NTFS FileSystem are concerned. If your current 6tB disk is a single partition disk, then it is already formatted as a GPT disk.
     
    Last edited: Jun 9, 2020
  4. TheRollbackFrog

    TheRollbackFrog Registered Member

    Joined:
    Mar 1, 2011
    Posts:
    4,268
    Location:
    The Pond - USA
    ..and I guess the final statement is, as far as Windows itself is concerned, no extra programs are needed to handle large disks under the NTFS FileSystem. BUT... be aware, if those large drives are AFT drives and have real 4k-byte sectors (not 512E emaulation), there are still some APPLICATIONS that cannot handle those large sectors as of yet.

    At this point, the safest large drive configuration should always have 512-byte sectors (real or emulated) and they should be GPT formatted.
     
Loading...
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.