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[SOLVED] Missing OS;Unknown Media Type

Discussion in 'Hardware' started by Doncomp, Apr 26, 2004.

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  1. Doncomp

    Doncomp Thread Starter

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    Had a rebooting over and over problem. Put HD in good computer, worked.
    Thought it was IDE Controller. So, I got another MB....
    Get Missing Operating System on boot up. (after running BIOS setup utility)
    With a floppy 98 set-up disk, copies files to 'Virtual D' drive ??
    FDISk shows partition C as Active but System says "Unknown".
    When I try to address C: get "Unknown Media Type" Abort,Retry,Fail

    All of this happened with the old MB too !!

    Any ideas?
     
  2. ~Candy~

    ~Candy~ Retired Administrator

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    What operating system is on the drive? How is the bios recognizing the drive?
     
  3. Doncomp

    Doncomp Thread Starter

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    Win 98. And the BIOS recognizes the drive just fine.
     
  4. ~Candy~

    ~Candy~ Retired Administrator

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    What's the mission then, is there anything on the drive that needs to be saved? Per chance, do you know if there is a software overlay on the drive? How does the drive show up in bios?

    Also, can you download a bootdisk from here, save to desktop double click and create a floppy disk so I'll know what we are working with.
    http://freepctech.com/pc/002/files010.shtml
     
  5. Doncomp

    Doncomp Thread Starter

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    I don't understand. The mission is to 'address my c: drive'
    To have my c: drive open with Win 98
    My system is not recognizing the C:
    In Bios it is. Is the System = Unknown in FDISK a factor?
     
  6. ~Candy~

    ~Candy~ Retired Administrator

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    Yes, it's a factor. It should not say unknown. On the system where it works, what does it display there?
     
  7. Doncomp

    Doncomp Thread Starter

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    I didn' check FDISK there. Actually, I was afraid of contaminating that system, so I just watched OS opening...
    What should System read ??
     
  8. ~Candy~

    ~Candy~ Retired Administrator

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    FAT 32 hopefully. But it could be FAT 16. And when you say the operating system opens, does it load completely? If so, you could have driver issues.
     
  9. Doncomp

    Doncomp Thread Starter

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    How can I change the System to FAT32?
     
  10. ~Candy~

    ~Candy~ Retired Administrator

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    Is it saying FAT16? You may be able to change it in the computer that will boot up, but I would like to know the entire history, and more information before I would suggest doing that. I've got to call it a night, so if no others have ideas, I will check back in on you in the morning.
     
  11. Doncomp

    Doncomp Thread Starter

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    Driver issues?
    Can we get back to the basic problem.
    I can set my drive in BIOS, it recognizes cyc heads, etc.
    I set BIOS to boot to floppy then HD.
    When I boot, I get missing OS message.
    When I boot to a set up floppy, I cannot copy any thing to C:, I get "invalid media type" message; If I change dir to C: and type C:dir /p I get "invalid media type" message.
    If I a:fdisk and display partitions it shows C partition as Active, and System=Unknown
    How did my HD get an Unknown system instead of FAT32 ??
     
  12. ~Candy~

    ~Candy~ Retired Administrator

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    You need to run fdisk on it, but since it's not being recognized, you may have to set the bios setup manually to heads/cylinders etc. instead of using AUTO, or whatever other setting is there. Also does the bios setup have an option to enable or disable LBA? In the machine that recognizes the drive correctly, check to see how things are displayed in the bios there. How large is the drive anyway?

    Check to be sure the jumper setting is correct too.

    Is there anything on the drive that has to be saved? If not, have you tried with fdisk, removing partitions first?

    http://support.microsoft.com/defaul...port/kb/articles/q255/8/67.asp&NoWebContent=1
     
  13. Doncomp

    Doncomp Thread Starter

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    I have fdisk'd it. I told you. I've looked at the partition, I've deleted the partition and I've created a new partition.
    The Hd did not have any jumpers on it when it was working right.
    It's 10g
    Yes, the bios has an LBA utility.
    Putting into another computer is not an option anymore. I'm not putting into mine.
     
  14. Doncomp

    Doncomp Thread Starter

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    Seems FDISK showing "System=Unknown" is the basic problem.
    Because, I get "Invalid Media Type" when I try to C:/dir or copy a:/command.com to C: or use a Win98 boot disk to load Win98, it will not load setup files to C:, like I said, it copies the setup files to "Virtual D: drive". I don't have a D drive.
     
  15. ~Candy~

    ~Candy~ Retired Administrator

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    Disable LBA in the bios setup and select USER DEFINED settings and enter 1023 cylinders, 16 heads, and 63 sectors. Then try to redo fdisk.
     
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