Windows 8 and 8.1 Forums


HELP: dual-booting W7/8, now Win7 will not load

  1. #11


    Posts : 1,320
    Server 2012 / 8.0


    All good options.

    For this case,
    the partition has not been lost yet as far as I know.

    The partition has been converted to raw.
    See previous attached image.
    The partition files need to be recovered first,
    then when all is safe, the partition can be converted to NTFS.


    D: is not accessible. The parameter is incorrect

    raw file system - Bing

    Good Luck J4rrod.
    done here.
    going to work.
    thanks.
    Last edited by mdmd; 18 Jun 2012 at 09:11.

      My System SpecsSystem Spec

  2. #12


    Posts : 5,360
    7/8/ubuntu/Linux Deepin


    Hi fafhrd - glad you are watching.

    This isn't the first time I have come across with win8 multiboot.

    Beginning to think it is a win8 feature.

    Hopefully telemetry will pick it up.

    Haven't got my hands on a machine with the issue so can't be certain, but it seems to be damage to the boot record.
      My System SpecsSystem Spec

  3. #13


    Portsmouth Hants
    Posts : 772
    Windows 8.1 Pro with Media Center


    Hi SIW2 - I am afraid that Windows 8 so far is not a comfortable system to multiboot with. It has instabilities - even when booting other Windows 8 of the same edition/version. Not least hiding the system volume, and then changing the system to a different volume when it decides a repair is required.

    I do a few odd things - At present I am multibooting between a USB stick and a USB external Hard disk, completely bypassing the internal hard disk - which seems safe for my Windows 7/XP/Mint system - but the windows 8 can't decide which of the Windows 8 boot volumes is master, so it's F9, F9 every time, and then I get the wonderfully informative dual boot screen:Click image for larger version

    I know I railed on about the meaninglessness of the "C:\ drive", when the current system always calls its own drive "C", but this use of "volume n" is even worse. Diskpart lists volumes up to 8 on this system, But the Windows 8 boot manager finds volumes 9 and 10 - it's not as though I don't label my formatted volumes.Click image for larger version

    So I am giving the Windows 8 boot manager a fail for this - it is slow, clunky and downright dangerous compared to the Windows 7 version, which mostly worked, and when asked to do a repair, repaired not fubared.

    I've edited the BCD so that I know which is which now.
      My System SpecsSystem Spec

  4. #14


    Crayfish yes the target drive is the real solution before there was ever a white paper lol and I love how you think yeah after years of dual booting and never having serious mbr backups and raid backups of a raid setup fron a networked comp that was a striped setup yeah its friggen crazy. You need to use a backup program that is native to each system as well I used to use acronis and there was a good one I used on win pe but I can't remember it now the best way tto dual boot is to use a linux boot loader it will solve all your problems buddy seriously don't depend on windows alone if you venture out into the woods
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  5. #15


    Posts : 93
    W2K8S R2 STD, W7 ULTIMATE X64


    Hi,

    Try replacing the cable and plugging the HD into a different port. I've had a drive disappear from Windows, and the reason was a bad SATA port on an Asus motherboard.
    Indeed, quite often the cause of this happening is a bad connection somewhere along the line making Windows assign the partition as being RAW where in reality it quite likely is not.
    Examples of this are: too long data cables, EMI disturbance on the cable (insufficient shielding), bad connection(s) inc;uding power connections, you name it.
    This is when we're considering two or more physical HDs.
    In this case however, as the partition sits on the same drive, it seems as if the MFT/FAT and/or MBR is damaged or it least looks that way to the OS you're trying to look at it from.
    Not sure how this can happen other than the technical causes described above but it does.
    In case chkdsk can't solve it (I doubt it can) you'll probably need to resort to data recovery software or, if you're lucky, a partition analysis and repair tool.

    Let us know how you tackled this and should you find out what caused it we'd like to know as well.

    Good luck,
      My System SpecsSystem Spec

  6. #16


    Posts : 37
    Windows 8 Release Preview


    Ok so I've recovered all the necessary files. Now, my question is, is Windows 7 still there, or am I going to have to buy a whole new Windows 7 disc/license? I understand I'll lose the files I didn't recover. Now I need instructions on converting RAW to NTFS. Thanks guys.
      My System SpecsSystem Spec

  7. #17


    Posts : 93
    W2K8S R2 STD, W7 ULTIMATE X64


    Hi,

    The files should all still be there unless some were accidentally deleted. What happened is that the FAT table containing all the meta data (the pointers to where the files actually reside on the disk) is somehow damaged.
    Did you run: cmd (enter) chkdsk X: ( replace x with drive letter) /f /r ?

    If that does not work then you'll need to resort to some third party utility that will fix the FAT table, after that the partition should become accesible again and W7 should run again fron the bootmanager.

    By no means format that partition or it will make it even harder to recover anything from it.

    Cheers,
    Last edited by fdegrove; 19 Jun 2012 at 05:54.
      My System SpecsSystem Spec

  8. #18


    Posts : 37
    Windows 8 Release Preview


    I'll run the check disk when I get home. Any recommendations for 3rd party FAT correctors? And if I do that, it will automatically convert the RAW to NTFS?
      My System SpecsSystem Spec

  9. #19


    Posts : 5,360
    7/8/ubuntu/Linux Deepin
      My System SpecsSystem Spec

  10. #20


    Portsmouth Hants
    Posts : 772
    Windows 8.1 Pro with Media Center


    Chkdsk will not operate on RAW file systems - it needs that very same metadata that is damaged or missing to decide what is data and what is garbage.

    There are utilities available - SIW2 has already given links - google "recover raw file system" to get more suggestions. I cannot recommend any of these - I have never used them.

    The best advice is keep cool about it - the data, including the OS is still there, unless the disk is written to - unlikely under the current circumstances unless a clean, repartition and reformat is attempted.

    try one recovery method at a time and hope that you find the appropriate method to get Windows 7 booting again.

    Then run chkdsk and sfc/scannow
      My System SpecsSystem Spec

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