Disk Management vs Bios SATA drives

  1. Posts : 175
    windows 7 32

    Disk Management vs Bios SATA drives

    Interesting. Not a problem cuz everything works fine.

    But... in disk management... my boot drive (PNY 240gb SSD) is listed as in disk 1, with my data drive (Seagate 480gb SSD) listed as disk 0

    While my BIOS says the PNY is connected to SATA 1, and the Seagate to SATA 2

    should i be concerned? Can it be fixed? Does it need to be?
    Attached Thumbnails Attached Thumbnails Disk Management vs Bios SATA drives-drive-man.png   Disk Management vs Bios SATA drives-bios-sata.png  
      My Computer

  2. Posts : 6,292
    Windows 7 64 Bit Home Premium SP1

    You do not need to be concerned.
    By convention, all SATA ports are treated equally by the System. There will be no performance improvement based upon which port the drive is connected to (that applies to the standard chipset ports - any add on controller ports are a different story).

    BIOS recognizes disks by which SATA port they are connected to, Windows identifies DISKS by an identifier code kept in the registry. Once a disk gets identified as Disk 0 it will remain Disk 0 until something changes.

    IF you are OCD (like me) you can try this:

    • Shut down the computer, and switch off the power supply.
    • Disconnect the larger Seagate drive (SATA2 in BIOS, DIsk 0 in Windows)
    • Switch the power supply back on, and restart the computer. Enter Windows and check Disk Management to see if the PNY SSD is now Disk 0.
    • Shut down and reconnect the Seagate. Restart and see if it stays that way.

    Let us know!
      My Computer

  3. Posts : 13,576
    Windows 10 Pro x64

    Did you install the Intel Sata drivers ? If it uses them ?

    Check Device Manager
    Last edited by AddRAM; 22 Apr 2015 at 17:48.
      My Computer

  4. mjf
    Posts : 5,969
    Windows 7x64 Home Premium SP1

    You can't always guarantee a one to one mapping between sata port and disk drive number.
    Disk drive numbers may not correspond to the SATA channel numbers when you install Windows on a computer that has multiple SATA or RAID disks
    and discussed before on this forum
    Diskpart / Disk Management vs the BIOS
    This normally isn't a problem BUT
    your first disk (0) has an active partition up the front. You don't want to be booting disk 1 through disk 0. If you unplug disk 0 and you boot ok then you're fine. Just mark the first partition on disk 0 NOT active. If you can't boot then you are booting through disk 0. This can be fixed.
      My Computer


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