Windows 8 and 8.1 Forums


Win 8 no longer boots - Drive Letter Issue/boot partition?

  1. #1


    Posts : 14
    Win 8 32bit

    Win 8 no longer boots - Drive Letter Issue/boot partition?


    Hello

    I recently took my hard drive out of my laptop, and plugged it into an external USB drive to copy some files to another laptop.

    Upon putting the hard drive back into my laptop, windows 8 would no longer boot. It would get to the Operating System select screen (I also boot Win 7 on this system) and when I select windows 8, it would go to a black screen, hard drive light would flicker for a bit and it would just stay stuck on this black screen.

    When I rebooted, and from the operating system select screen accessed the Command Prompt, I noticed that the partition where Windows 8 was, was no longer on C:\. Instead, it was now residing at D:\, and C:\ was the system reserved partition, which i think is the boot partition in windows 8?

    So I'm guessing - and correct me if im wrong - that when i select Windows 8 from the operating system screen, it is searching for the operating system in C:\ as it used to be, but now somehow that partition now exists as D:\, so it cant find the files and just hangs.

    If this is the case, then I suppose I either need my windows 8 partition to reclaim C:\, or i need to change the boot settings somehow to load windows from its new home at d:\. Im guessing the first option is the best way to go back to exactly how things were. I dont know how to do either.

    So I'm not sure what happened here, when I plugged my hard drive via an external USB caddy it seems to have changed a few things around on the drive, like assigning the system reserved partition a drive letter - it shouldnt even have a letter should it?

    As a side note, Windows 7 does boot correctly from this laptop - im guessing because when you select windows 7 it restarts the machine and the OS can only see 1 partition - that where windows 7 resides. Also I have a run a chkdsk on the windows 8 partition and it came back with no problems.

      My System SpecsSystem Spec

  2. #2


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Drive letters as seen by Start up Repair.

    Click image for larger version

    Try this,

    How to do a Automatic Repair:
    Automatic Repair - Run in Windows 8
    Note: You may need to do startup repair 3 to 4 times.
    Startup Repair - Run 3 Separate Times - Windows 7 Help Forums
      My System SpecsSystem Spec

  3. #3


    Posts : 14
    Win 8 32bit


    i did try automatic repair but it just said, after restarting and diagnosing, "automatic repair could not repair your pc"

    i will look into the startup repair thing. kind of strange how win 8 was starting fine before though ??
      My System SpecsSystem Spec

  4. #4


    Automatic repair has never worked for me either - what did however was CHKDSK /f (after a complete bcdboot rebuild...)
      My System SpecsSystem Spec

  5. #5


    Posts : 1,121
    Windows 8.1 x64


    Your system configuration can be very important in resolving situations such as yours. If you could provide a Disk Management picture such as Theog shows, we could see for ourselves.
      My System SpecsSystem Spec

  6. #6


    Posts : 14
    Win 8 32bit


    Click image for larger version

    Saltgrass: If I plug in my hard drive to an external USB caddy and plug it into another laptop, i can access disk management. Above is the screen I get. My HDD in question is "Disk 2".

    Superfly: I have tried CHKDSK but it returned as having no faults. Although, what partition did you use CHKDSK with? As you can see I have 3 partitions here, maybe you mean to CHKDSK the system reserved partition? Also what do you mean by a full BCDBOOT rebuild?

    Theog: As I mentioned before the automatic repair does not work. The subsequent link I'm not sure applies to me as I'm running windows 8 and that guide is for windows 7.
      My System SpecsSystem Spec

  7. #7


    Posts : 14
    Win 8 32bit


    Update: I have tried going into command prompt and using this guide to fix the windows bootloader:

    type > bootrec /fixmbr (writes mbr but does not overwrite partition table)
    type > bootrec /fixboot (writes new boot sector to system partition)
    type > bootrec /scanos (scans for other OS’s that you might want to add to bcd)
    (personally I find the above unneeded and only use the last step)
    type > bootrec /rebuildbcd (scans for other OS’s, unlike rebuildbcd it allows you to select the OS’s you want to add to bcd)
    Reboot
    I have typed these whilst at c:\ (what is seen by command prompt as the system reserved partition). However the last two commands keep insisting that no windows installations can be found on any drive? This is bizarre as command prompt can clearly see all 3 partitions and in fact i can still boot into windows 7 fine.

    I have tried CHKDSK /F on the system reserved partition: no problems found.
      My System SpecsSystem Spec

  8. #8


    Posts : 14
    Win 8 32bit


    Oh I should also mention: booting windows 8 into safe mode has the same problem: stuck on blank screen
      My System SpecsSystem Spec

  9. #9


    Posts : 1,121
    Windows 8.1 x64


    I am a little confused. You stated you could boot the system into Windows 7. Were you not able to use Disk Management with both drives installed to get a picture?

    Showing the drive in another system does not really help showing us your actual configuration. If it will not boot with the other drive, use the Boot Device Menu to choose the drive you want to boot to. If you do have two hard drives on that laptop, when you took one out, it might have reset the primary drive to the other one and thus messed up your normal boot. Check your bios to make sure the correct drive is set to primary.
      My System SpecsSystem Spec

  10. #10


    Posts : 14
    Win 8 32bit


    ah, ok. I can boot into win 7 and do another screenshot, one minute..
      My System SpecsSystem Spec

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