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Sata problems, Backward compatible?

Hi EE.

A quick question. I have an old Asrock motherboard : http://europe.asrock.com/mb/overview.asp?Model=K8Upgrade-VM800

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 ?
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JarlK
Asked:
JarlK
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1 Solution
 
JarlKAuthor Commented:
Moved jumper to LEG 3+4, then the disk was forced to run sata150!
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PCBONEZCommented:
SATA 150 and SATA 300 are front-back compatible so you either have a bum drive or a bum motherboard.
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With Asrock I'd guess the motherboard.
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CallandorCommented:
>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: http://www.tomshardware.com/forum/239958-32-sata-sata
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PCBONEZCommented:
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.
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JarlKAuthor Commented:
Will close threat!
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