Sata problems, Backward compatible?

Posted on 2009-05-02
Last Modified: 2013-12-10
Hi EE.

A quick question. I have an old Asrock motherboard :

As you all can see on the specs. It supports SerialATA 1.5Gb/s, RAID 0,1,JBOD, SATA HDD Hotplug.

My question is that i try to install a SATA II disk, but i will not be found in the bios or in the raid menu?! Is there somwhere i can try - or is it a problem with a sata 150 interface on the motherboard , and a sata 300 disk ?
Question by:JarlK

    Accepted Solution

    Moved jumper to LEG 3+4, then the disk was forced to run sata150!
    LVL 26

    Expert Comment

    SATA 150 and SATA 300 are front-back compatible so you either have a bum drive or a bum motherboard.
    With Asrock I'd guess the motherboard.
    LVL 69

    Expert Comment

    >SATA 150 and SATA 300 are front-back compatible

    Not always true - they are SUPPOSED to be compatible.  SATA II drives come with a jumper to force SATA I mode, because some SATA I controllers had problems negotiating with SATA II drives - VIA chipsets were notorious for this.  JarlK has discovered this jumper, and it is a known problem that is solved by forcing the drive to negotiate using SATA I specs:
    LVL 26

    Expert Comment

    If the drive has a jumper to switch between SATA 150 and SATA 300 then it works in both and that makes it front-back compatible.

    The fact that it's not plug'n'play does not affect the nature of what it's compatible with.

    Author Comment

    Will close threat!

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