Small amount of unallocated space left when creating logical partition


  1. Posts : 21
    W7 64 bit
       #1

    Small amount of unallocated space left when creating logical partition


    As title states. I was just wondering if this is normal / why does it occur?

    I have added a second hard drive to my computer (1TB) and I'm trying to format it with a single logical partion. I've told Partiton Wizard to create a single partition but it always leaves 15.75MB unallocated at the begining of the drive. I'm not worried about losing 15MB but I would like to know why it's there? Is it how hard drives/Windows/Partition Wizard work, or something else?

    If I try formatting it with a single partition but as "active" instead of logical, it lets me use the whole thing.





    Screenshots of Partition Wizard, the 1TB drive is Disk 2:

    Drive with unallocated space

    Try to resize partition to use whole disk

    Resize attempt gives same result

    Deleting the partition and creating a new one as Primary allows the whole thing to be used

    Edit: Just tried again and I'm getting the same effect but with 7.88MB unallocated (half of what it was before). I haven't changed anything, just closed Partition Wizard and opened it again.


    Edit 2: I got rid of that unallocated space by using the move/resize option and unchecking "Using enhanced data protecting mode". Still interested in an explanation if anyone knows how it was doing whatever it was.
      My Computer


  2. Posts : 1,846
    Windows 7 Ultimate x64, & Mac OS X 10.9.2
       #2

    its normal, its 10mb on my SSD in my gaming rig
      My Computer


  3. Posts : 6,292
    Windows 7 64 Bit Home Premium SP1
       #3

    Windows likes to have a small amount of unallocated buffer space at the end of a drive to use when converting basic and dynamic disks. Without it the conversion may fail.

    Likes to have it in the beginning of the drive if you are trying to create an extended partition at the front of the drive.

    Creating a new volume always leaves unallocated space | Knowledge Base
    unallocated space (partition?) question [Archive] - Wilders Security Forums
      My Computer


  4. Posts : 21
    W7 64 bit
    Thread Starter
       #4

    That's what I was after, thanks. I'll put the unallocated space back, it's not going to make a noticeable difference to usable space.

    Marked as solved and rep left.
      My Computer


 

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