Hard Drive Automatically Hides on Restart

Discussion in 'Windows 7 Help and Support' started by gvsu141, Jul 2, 2010.

  1. gvsu141

    gvsu141 New Member

    Nov 23, 2009
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    I have 7 pro x64. I have one hard drive I use to run windows from, along with a secondary one used to store data. Every time I restart the computer, the secondary hard drive gets hidden. I use Easeus Partition master to unhide the drive. It works perfect until I restart again.

    I have tried changing registry settings on hiding hard drives, along with the typical built in windows methods to hide/unhide a hard drive.

    Does anybody have any ideas on what is causing this??
  2. patcooke

    patcooke Microsoft MVP
    Staff Member Premium Supporter Microsoft MVP

    May 16, 2010
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    Go to control panel, admin tools, computer management, storage, disk management and compare the properties for each of the two drives.
  3. zvit

    zvit Honorable Member

    Nov 3, 2009
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    Is it a secondary HDD or a second partition of the first disk? Is it just losing the drive letter? Have you tried making it appear by assigning it a new letter?

    You can try to use the free Easeus Partition Table Doctor http://www.ptdd.com/

    There is also a solution from Microsoft:
    When you resume a computer from sleep or from hibernation, the SATA hard disk drivers require the SATA hard disks to be ready within 10 seconds. However, a large SATA hard disk may take longer than 10 seconds to be ready. In this situation, the resume operation times out.

    Here is the link to the HOTFIX:
    #3 zvit, Jul 4, 2010
    Last edited: Jul 4, 2010

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