Cannot boot to HDD or Optical when Motherboard in AHCI mode
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by Shevek
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Published on 2010-03-20T13:29:42Z
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2010/03/20
13:31 UTC
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I have an Abit AB9 QuadGT motherboard and am trying to swap over to AHCI mode.
I have an existing Windows 7 installation which was installed under IDE mode.
I have set the msahci registry setting to 0.
When I try to boot in AHCI mode I get "DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER".
I have tried booting with my Win 7 DVD in the optical drive.
There is 1 SSD (System), 1 HDD (Data) and 2 optical drives connected via SATA
If I switch back to IDE mode everything boots fine, either from the SSD or from a CD or DVD in the optical drive.
Why can't I use AHCI mode?
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