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Windows 8 CP : Check Disk on Dual Boot

  1. #1



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    Windows 8 CP : Check Disk on Dual Boot


    I have Windows 8, Windows 7, Ubuntu installed on my laptop.

    Now sometimes in returning to Windows 7, Windows runs Chkdsk.

    So I have to wait to finish off the chkdsk process then I could see login screen. This makes start up of windows lengthy.

    Wats the problem can anyone help?

    Notice it happens "sometimes".

    Appologies if same thread exists.. gave me the link to it if so..


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  2. #2
    fafhrd's Avatar

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    A theory only: Windows 8 is designed to close and reopen by faster booting (Hybrid Boot), it has left your system in a hibernated state, with the drives mounted, open and ready to take off as soon as Windows 8 restarts. When a drive is mounted, a little piece of data is written to a standard place on the disk to show it is in use - it is called the "dirty bit". When properly unmounted, that data is "cleaned" off.

    This means that the "dirty bit" on the disks that Windows 7 checks on startup is showing on the disks. This normally means that the system was previously closed suddenly without unmounting the drives, as it would if there has been a crash, and chkdsk is automatically run to check the integrity of the disks with the "dirty bit" set.

    On the other hand, perhaps Windows 8 did really crash on shutdown and you should ask this in the crashes and debugging section of this forum, where one of the crash experts will help you out. They will want a little information from you - read the pinned post and follow the BSOD Posting Instructions first.
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  3. #3



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    Thanks fafhr for reply!

    Can u plz. tell me where is this hybrid boot option is located inside Windows 8 CP?

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  4. #4



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    No, no about bsods fafhrd. That is a seriously awesome post of yours above because it is a very logical and reasonable explanation.

    I had this issue (but haven't seen it lately though) and whs also complained of the same exact thing. Your explanation is the only thing I can think of why Windows is setting the flag to chkdsk (since you've said it lol.)
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  5. #5
    fafhrd's Avatar

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    @ GMan, yeah I've had them, but usually (not always) associated with crashes, or rather lockups, but often no disk data corruption. Neither did I find much of a problem with subsequent SFC /scannow. The machine had (has) hardware issues, and a hopelessly OEM-simplified BIOS, so no way to easily modify temperature sensitivity.

    @Kapilarya, hi.


    • Open Control Panel -> Hardware and Sound -> Power Options.
    • Click on "Choose what the power button does" on left hand side.
    • Click on "Change settings that are currently unavailable".
    • Go to Shutdown settings, top item
    • Uncheck "Turn on fast startup" at the bottom an option, under Windows shutdown settings.


    Click image for larger version

    Your screen may look different depending on your machine configuration - this was a laptop.

    You may want to disable hibernation altogether, uncheck "Hibernate" option too, It will reclaim gigabytes of valuable disk space by erasing c:\hiberfil.sys.

    Good luck
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  6. #6



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    I'm talking about the Hybrid option not about hibernate option.

    P.S. I don't know the difference b/w them
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  7. #7
    fafhrd's Avatar

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    Microsoft has renamed "hybrid boot" to "fast startup" for the consumer preview -in the earlier version, it looked like this:
    Name:  2082d1316809053t-power-options-menu-add-remove-sleep-hibernate-windows-8-power-2.jpg
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Size:  61.1 KB

    This and hibernate both close down the system completely when the selected power option is performed, so it uses no power, like a full shutdown.

    Hibernate makes a copy of the state of your machine at shutdown (a copy of the working memory), saves it as a file called c:\hiberfil.sys. It is of necessity the same size as your available memory - which is a big file in most cases.
    At startup it loads the whole file into memory, which although quick is not as quick as the fast startup technique. The larger the file, the longer it takes to read off the disk.

    Fast Startup only reads a small file from disk, about 256 MB - a copy of the computer kernel - and although it is still not documented as far as I know, the file is probably the one called c:\ swapfile.sys. This is rapidly read and brings up the Start screen very much faster. While everything else starts up, Windows also reads the c:\hiberfil.sys to completely return the system to the state it was when shut down.

    Other shutdown/start options are sleep - which still leaves your computer running at a low level until you wake it up. this will use power and drain batteries on mobile devices.
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  8. #8



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    Thankssssssssssss a lot... great info man....truly enjoyable...
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