MSR Size Curiosity - GPT secondary disks

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  1. storageman's Avatar
    Posts : 1,020
    Windows 10 Pro 20H2 19042.572
       #21

    Sorry - But I see nobody that has ever exceeded more than 5 partitions with no MBR partition.

    The challenge is let see them ?

    PS since we have win 7 and earlier version posters, I want to see more than 5 partitions on a drive that has NO MSR Partition ???
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  2. Megahertz's Avatar
    Posts : 2,381
    Windows 7 HP 64 - Windows 10 Pro - Lubuntu
       #22

    A GPT drive allows for a nearly unlimited number of partitions. Again, the limit here will be your operating system - Windows allows up to 128 partitions on a GPT drive. And they are all primary. There is no logical partition on a GPT drive.
    GUID Partition Table - Wikipedia
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  3. Bree's Avatar
    Posts : 18,614
    10 Home x64 (20H2) (10 Pro on 2nd pc)
       #23

    Megahertz said:
    If I remember well, on Windows 7, MSR was used to hold the decryption files.
    As I see,storageman, TV2 and Bree has Win 10 pro. Do you have the main drive encrypted?
    No, I don't use encryption.


    I've repeated the diskpart clean and GPT initialisation using Disk Management on a legacy MBR system with Windows 10 Home - same results.

    MSR Size Curiosity - GPT secondary disks-image.png
    Last edited by Bree; 08 Mar 2020 at 21:10.
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  4. TV2's Avatar
    TV2
    Posts : 1,771
    W10 Pro 20H2
    Thread Starter
       #24

    It would be interesting to discover why it's not being created on Megahertz machine. Just to know if it can be toggled with some setting change.

    Edit:
    Just noticed that Megahertz has Lumbuntu on his system. Could a Linux Distro on the system explain the behavior?
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  5. Megahertz's Avatar
    Posts : 2,381
    Windows 7 HP 64 - Windows 10 Pro - Lubuntu
       #25

    I asked Kari for an explanation. Lets see if he find some time to help us with this mystery.
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  6. storageman's Avatar
    Posts : 1,020
    Windows 10 Pro 20H2 19042.572
       #26

    Megahertz said:
    If I remember well, on Windows 7, MSR was used to hold the decryption files.
    As I see,storageman, TV2 and Bree has Win 10 pro. Do you have the main drive encrypted?
    No encryption on my system either. My system disk (disk1) has no MSR partition. It was a MBR based system and I used "MBRtoGPT" command. Disks (3) and (4) were new drives and Disk management was used to initialize them and they have the 16mb MSR partition.


    MSR Size Curiosity - GPT secondary disks-image.png
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