Windows 8 and 8.1 Forums

Multi Boot-Win7 & Win8.1 - Data Drive not seen in Win8.1

  1. #1

    Posts : 2
    Mulit Boot-Windows 7 Professional 64bit/Windows 8.1 64bit/XP

    Multi Boot-Win7 & Win8.1 - Data Drive not seen in Win8.1

    Hopefully my explanation of this problem is not too confusing, this my first post.

    My system is a multi-boot for Win7, Win8.1 & XP. I boot into Win7 most of the time. The multi-boot is controlled via EasyBCD in Win7. My data drive is a separate disk - F. I have been running this configuration for over a year without any major problems.

    The system is an older Dell-XPS Core2 Quad CPU Q9450 A 2.66GHz with 8Gb memory
    System drive - 1Tb with four partitions
    Data drive - 1 Tb one partition

    Recently I booted into Win8.1 after a few weeks of using only Win7. The data drive F: was not available. It does not show up in Disk Management and under Device Manager it shows as not connected to the system when the Unavailable Devices are displayed.

    Booting back to Win7, the data drive is available, no problems with it. There are not any errors in the event/system logs in Win8.1 or Win7 related to the data drive F.

    One possible cause might be that the motherboard battery was replaced about a week ago. I had to go in the BIOS and make changes for problems encountered when Win7 was booted. Unfortunately, I didn't boot Win8.1 to see if it had any problems. I've looked at the BIOS, but don't see anything that might cause this problem.

    The config for the EasyBCD is below for boot into Win7
    There are a total of 4 entries listed in the bootloader.

    Default: Microsoft Windows 7
    Timeout: 30 seconds
    Boot Drive: C:\

    Entry #1
    Name: Windows 8.1
    BCD ID: {3081a5c6-c566-11e3-808b-85773c60a873}
    Drive: D:\
    Bootloader Path: \WINDOWS\system32\winload.exe

    Entry #2
    Name: Earlier Version of Windows
    BCD ID: {ntldr}
    Drive: C:\
    Bootloader Path: \ntldr

    Entry #3
    Name: Microsoft Windows 7
    BCD ID: {current}
    Drive: C:\
    Bootloader Path: \Windows\system32\winload.exe

    Entry #4
    Name: Microsoft Windows XP
    BCD ID: {35d885e8-466f-11e2-9b2c-001e4ce68d6b}
    Drive: C:\
    Bootloader Path: \NST\ntldr

    Thanks in advance for your assistance.

      My System SpecsSystem Spec

  2. #2

    First off, why so many entries in BCD ?
      My System SpecsSystem Spec

  3. #3

    Posts : 2
    Mulit Boot-Windows 7 Professional 64bit/Windows 8.1 64bit/XP

    Guess I never paid much attention to the double entry in BCD for XP, it worked so..... I'll clean it up after this.
    I've searched the Internet for a solution and tried a lot of things to resolve this, but nothing seemed to work.
    I finally gave up on it and restored an image backup of the Win8.1 partition that I had from mid Aug. That fixed the problem. Guess it could have been one of the 50+ Windows updates that caused the problem with the data drive. I'll be sure to check the data drive after every few updates.

    Thanks for the reply
      My System SpecsSystem Spec

Multi Boot-Win7 & Win8.1 - Data Drive not seen in Win8.1
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