HDD AHCI not seen in BIOS after installing windows 7 x64 on it?

Question

Hard disks

Good night, Habr!
I recently bought a wd4500hlhx (sata-3) drive, rejected the system to it, and changed the BIOS settings from ide to ahci. Everything worked, but there were some lags, sometimes errors in applications slipped through, and I decided to rearrange the system.
I saved it, formatted it, started installing it, and at the end of the installation, windows 7 said that a reboot was needed. In the BIOS, the computer hung with the inscription "I'm looking for a disk in port1 on ahci ..." and hung while I drank tea.
Transferred in bios back to ide - it works. I formatted the disk again, changed it to ahci in the BIOS, and again tried to install the system, without success.
I must say that the formatted disk in the BIOS is visible and loaded with a bang.
Bios latest.
Now the disk stands as ide with the system, when rearranged to ahci it is not visible in the BIOS.
How to transfer the computer to ahci, what could be the problem? Can anyone come across?
PS hardware: mb Asus Maximus Extreme lga775 (intel ich9r controller)
wd wd4500hlhx / wd2002faex
update
Updated BIOS and flashed ich9r RAID v8.5 Rom into it. (was 7.5)
Drive is still searched for in POST and not found

Answer 1

I found an explanation for the fact that the disk was not in the BIOS.
When installing windows 7, I did not manually create partitions, they were created by windows itself, and it did it very strangely, leaving a few bytes of unallocated space at the beginning and at the end of the disk. (It can be seen, for example, acronis and similar programs)
The Intel controller did not cope with the task of reading such a small partition and, as a result, the disk was not seen.
What I did to put the drive in AHCI mode:
1) I took my old hdd drive off the shelf and did a disc to disc clone on it. (used norton ghost v11.5)
2) Inserted a disk with Windows and erased the first hdd.
3) Rejected back so that there were no unallocated places left.
4) In the registry, I corrected the branch that includes support for AHCI
5) In the BIOS, I changed the disk settings to AHCI and booted up.
I hope my research will be useful to someone besides me!

Answer 2

You would indicate all hardware + Google to help with the keyword "<motherboard model> ahci". In general, it looks like a bios bug. Try to roll back to the previous version(s) and see how the BIOS+HDD behaves on them.

Answer 3

You can simply always set the hex editor in the first sector at offset 0x1C3 FE FF FF, and fix the first section if necessary. I just removed the first small sections. Although the bug is certainly disgusting, a detailed description is here forum.giga-byte.co.uk/index.php?topic=8585.0