All SATA stopped working after upgrading to W11
Now I am posting my own solution after getting help on the Microsoft forum: Apparently W11 works differently with drives and requires RAID insteead of ACHI. Would never have thought of that.
Changing in the BIOS from ACHI to RAID did not bring the drives back straight away. I observed two differences:
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during start-up (before W11 loads) the four drives are listed, it states that the BIOS defaults have been restored and gives the option to press CTRL-C to configure
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In the device manager there were two new RAID controllers listed under "other devices" with the little yellow triangle, but an updated driver could not be found by Windows. However the utility of the motherbroad found a RAID driver and after installing this, all drives re-appeared.
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