Old OCUK motherboard, hardware RAID5 and Windows 11 Pro

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Yammer

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I can see your eyes rolling already.

My main desktop computer is an old but perfectly fast Asus P8Z77-V based PC (from OCUK). As well as an SSD main drive, there is an HDD for documents, and a 3x HDD RAID5, setup using the BIOS/chipset. This has been powering along for years happily, until Microsoft discontinued Windows 10.

I've just backed up and "upgraded" it from Windows 10 to 11. The mobo doesn't have TPM2, but I discovered Rufus and installed it anyway. I got the dreaded "A disk read error occurred" on first reboot. Oh dear.

Once I got into BIOS setup, I changed the SATA config from "RAID" to "AHCI" and rebooted. It worked. But now my RAID5 is absent, presumably because I'm using a different BIOS setting and generic Microsoft driver since the "upgrade".

I'm a bit rusty with all this stuff. Can anyone suggest a way of getting my RAID5 back, please?

I seem to remember using a modded Z77 SATA driver from Win-raid.com before. I've slept since then. I thought I should ask for advice here first before I break my system again.

Thanks for your patience.
 
Assuming your backup includes the array, you could use software RAID instead and set it up through Windows and copy back from the backup. Others may have more info on the pros vs cons of that. I don't know how good the software RAID on Windows is - I've switched to Linux once my machine was kicked out due to TPM2 and I've stuck with Linux even with new machines since then as it's so good now. Linux could also be an option for an alternative operating system depending on your needs, and may support the array natively. I'm afraid I don't know the real issue here, which may also be able to be solved with drivers. However, if there are no drivers for Win 11, you could consider above. Modded drivers + RAID array with presumably important data to me doesn't sound totally sensible.
 
I'm too old to move to a new OS now :-)
I'll look into software RAID and a restore from backup. My worry is that this slows everything else down with the extra CPU overhead.
I wondered if I could install the old modded driver (or a generic M$ RAID driver) and change the BIOS setting back, but this feels like a risky strategy and I still have PTSD from last night's disk read error.
 
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