Windows 10: 4tb hdd has system reserve files on it when other boot files are on ssd, cant move system...

Discus and support 4tb hdd has system reserve files on it when other boot files are on ssd, cant move system... in Windows 10 Network and Sharing to solve the problem; I have a 4tb hdd that was formatted as mbr instead of gpt, meaning i cant use the other part of the hdd, the issue is that i cant convert the hdd to... Discussion in 'Windows 10 Network and Sharing' started by kevin santiago1, Apr 28, 2025 at 8:47 PM.

  1. 4tb hdd has system reserve files on it when other boot files are on ssd, cant move system...


    I have a 4tb hdd that was formatted as mbr instead of gpt, meaning i cant use the other part of the hdd, the issue is that i cant convert the hdd to gpt because the hdd has systeme reserve files on it and i cant figure out how to move them to the boot drive. Edit: can't seem to get the screenshot to load on here.

    :)
     
    kevin santiago1, Apr 28, 2025 at 8:47 PM
    #1
  2. Frcraig Win User

    Two System Reserve Partitions

    I have two hard drives on my computer, an SSD with my operating system (Windows 8.1 which I just successfully upgraded to Windows 10) and an hdd for additional storage. After upgrading to Windows 10 I noticed that I now have two System Reserve Partitions.
    One partition is on the SSD and the other is on the hdd. Both contain bootmgr and similar files. The files on the hdd have newer file modified/created dates than those on the ssd System Reserve partition. If I set my BIOS to boot from the SSD I get the
    blue screen message "no bcd found". If I set the BIOS to boot from the hdd it takes over a minute, but Windows 10 boots fine.

    I'm guessing that the System Reserve partition on the hdd (storage hard drive) contains the boot files for Windows 10, but Windows 10 is not installed on that drive, it is installed on the SSD (which I think has the old Windows 8.1 boot files on its own
    System Reserve partition).

    I've given the two System Reserve partitions drive letters so that I can see the contents of the drives. Can I simply copy the contents of the newer System Reserve partition onto the older System Reserve partition so that Windows 10 will boot from the same
    SSD that it is installed on?

    Thanks for any suggestions,

    Craig
     
  3. awbflyboy Win User
    Move System Reserved Partition to Allow GPT Formatting

    I built my own computer with a 500GB SSD and 4TB HDD. Unfortunately I made the mistake of having both drives connected when installing Windows 10 for the first time, and now there's a System Reserved partition on my HDD. The problem with that is that it's
    only recognizing 2TB of the 4TB drive. I can assign a drive letter to only half the space, the other half is not accessible. In order to fix
    that, I need to format the drive as GPT, but that option is greyed out since there's a System Reserved Partition on the drive.

    How do I move the System Reserved Partition to the SSD in order to format my HDD as GPT and access all 4TB? I don't need to keep any files on either drive, so I'm happy to completely wipe the computer if necessary (possible?).

    Thanks.
     
  4. Johan45 Win User

    4tb hdd has system reserve files on it when other boot files are on ssd, cant move system...

    Win7 System Reserved Partition Full

    Isn't that what the system reserved partition is ? Or is it just a backup incase the windows boot files get corrupt?
     
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