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Thread: AHCI mode locks up BIOS




  1. #11
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: AHCI mode locks up BIOS

    Why are drives shipped out like that anyway? Just wondering

    Please send in a report on this, the more users that report it the more they will realize that it's an issue
    GIGABYTE - Support & Downloads - Technical Support

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    Default Re: AHCI mode locks up BIOS

    Quote Originally Posted by Lsdmeasap View Post
    Why are drives shipped out like that anyway? Just wondering

    Please send in a report on this, the more users that report it the more they will realize that it's an issue
    GIGABYTE - Support & Downloads - Technical Support
    I have reported it to gigabyte support. And they say they have never heard of this issue with this motherboard model.

    Seem like the people on the other end of the support are not very advanced. They wanted me to zero my hdd? I am not sure why when I can change only one byte and make the drive work. They need to fix this but now that I know Gigabyte has had this issue for over year with various MB models it doesn't seem like they care. A user should have to do raw disc editing to make a computer boot.

  3. #13
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    Default Re: AHCI mode locks up BIOS

    Well please tell them the issue is real and I've heard about it many times.

    I do think the problem is the hard drive manufacturers faults though, drives shouldn't be setup that way, but yes GIGABYTE could fix it vie modifying Intel's files (Not sure if they are even allowed). So it may be up to Intel to address the issue and not GIGABYTE.

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    Default Re: AHCI mode locks up BIOS

    Quote Originally Posted by Lsdmeasap View Post
    I do think the problem is the hard drive manufacturers faults though, drives shouldn't be setup that way, but yes GIGABYTE could fix it vie modifying Intel's files (Not sure if they are even allowed).
    I have contacted my friend that is an embedded software engineer at Seagate to see if he know what tool they use to partition these drives. And let him know about the issue.

  5. #15
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    Default Re: AHCI mode locks up BIOS

    I see your deleted post, and thanks for the info on that. I had no idea why it was that way, now it makes more sense.

    Look forward to hearing what your friend at Seagate has to say.

  6. #16
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    Default Re: AHCI mode locks up BIOS

    Interesting that you can see deleted posts. I had one mistake in that deleted post. The maximum the CHS (24bit address) can address on a HDD is 8.4GB. So any CHS address > 8.4GB, should be the special CHS Address (254, 255, 255). So I would say there is an issue with Seagate's partitioning utility. My friend works in the enterprise HDD group and deals with the SCSI HDD firmware so I don't know if he will be able to answer the question about the consumer HDD line.

    So Intel AHCI ROM must be seeing that the two 32bit addresses (start + length) is > 8.4GB and throw an error because the CHS should be the special CHS address (254,255,255) in that case. That is an error on Intel's part because the format of the drive is not important at the low level ROM level and should never cause a lockup. A HDD should be able to be filled with random data and still be attached to a AHCI controller. Who is Intel to say all HDD must be in valid MBR or GPT format, a customer might want to custom format a HDD for a special use.
    Last edited by WhatHappend; 03-26-2011 at 03:18 AM.

  7. #17
    Lsdmeasap's Avatar
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    Default Re: AHCI mode locks up BIOS

    Yes, they are left there in case the user needs them put back live, or in case needed to settle something, or so we can see if someone was being overly rude or something and then decided to change their minds :)

    Don't worry about your mistake, I am not too technically skilled in that area so I just glanced at the info anyway. So based your comments now, your sure it's a Seagate issue and they shouldn't ship out drives like that then right?

    Your buddy should be able to at least ask his co-workers if he can't directly find out from his team.

    I agree, it could be an Intel issue as well since it's the AHCI ROM itself that invokes the error and not all of them do it. So who's to blame more, Intel for making it cause an error, or Seagate for putting out drives setup in that fashion?

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