Hi there. I'm a first time BIOS modder. The need comes about because the Intel RST Option ROM on my MSI P55A-G55 (from ~2009) doesn't support 4TB drives.

I saved a copy of the current (and its the lastest) BIOS via the MFlash menu in the BIOS Setup to a USB key (FAT filesystem). Then I loaded that BIOS file into MMTool (Non-UEFI). It loaded OK, and I could identify the Intel RST Option ROM.
I downloaded ROM 8086-2822_11201527.bin.
I replaced the Option ROM with the downloaded file, then saved it.
Then I followed the instructions here Non-uefi.
After clearing CMOS, booting, setting the SATA controller to RAID mode & rebooting the PC stops with a flashing cursor after initialising the on-board Marvell controller. The PC is not hung, as I am able to soft-reboot (Ctrl-Alt-Del).
I tried with no drives connected, 1 drive connected, 6 drives connected. All the same.

Any ideas what is wrong?

I was able to reload the original v1.40 BIOS (after a bit of faffing around) and get it back to operational state with the 6-drive RAID array working (albeit with one failed drive replaced with a 4TB that isnt recognised properly by the Option ROM. The RST driver does recognise it - but wont let me repalce the failed 2TB drive with it).

Cheers for you help!
Geoff.

Hi.

Do I need to provide more details on what I'm trying to do, or the hardware involved, to get some help here? I have a 6 drive array running in a critical state with one drive failed that I want to repair ASAP. To do that I want to get 4TB drives supported by my MSI mobo - therefore the RST Option ROM upgrade attempt.

Does anyone know what might have gone wrong to cause the flashing cursor in top left-hand corner issue?
Is there a better recommended combination of BIOS & RST Option Rom for the P55 chipset?

Thanks for your helps.
G.

Could you post links to the vanilla BIOS you used for modding, the oROM(s) you wanna replace and your modded BIOS?

Yeah, sure. I'll put them on OneDrive and post a link. Take me a few hours as I cant access the system with those three files on it at the moment

Cheers,
G.

I have uploaded the three files to OneDrive.

1) 8086-2822_11201527.bin is the UPDATED O-ROM I downloaded from this Forum
2) a7668ims.140 - Upgraded-11.20.1527.rom is the upgraded BIOS including 8086-2822_11201527.bin
3) A7668IMS.140.ori is the original v1.40 BIOS that I saved out of the BIOS M-Flash utility. (The BIOS downloads from MSI web site are not in a useable format)

Hope that helps.

Geoff.

Thanks for looking Dieter.

Mmmmm... wonder why it never brings up the Intel RST Option ROM during the boot sequence then? It gets to the point where that should happen and just displays the flashing cursor in the top left hand corner of the screen. The computer doesn't hang, as I can soft reboot OK.

Is it worth trying a different version of the updated option ROM?

Zitat von Fernando im Beitrag #9

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Have you already tried to press CTRL+I while booting? If yes, what happens?

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Zitat von Fernando

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Zitat von clowg

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It gets to the point where that should happen and just displays the flashing cursor in the top left hand corner of the screen.

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Enter the BIOS and look into the "BOOT" section. Maybe you have to change a setting there.

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I may not have been clear before. The PC stops booting at this point - with the flashing cursor top left hand corner. So while it is like this, it never gets to loading the BIOS Setup screens. I have to power down, disconnect all drives and then boot and pressing [Del] works - BIOS Setup loads.

EDIT by Fernando: Quoted part re-formatted (to make clear, from whom the text came) and blank lines removed (to save space)

Will the 'TRIM in RAID modded Intel RST RAID ROM v10.1.0.1008' O-ROM support 4TB drives?

The problem is not the missing space, but rather no code to handle such large ROMs. This thread is an example of a fix, but limited to Asus for now.