Help me get parity/consistency/cohesion amongst my MSR partitions please


klepp0906

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Windows 11
So the story goes like this. I'm re-installing windows 11 and its late. I wanted to get the reinstall going so i could crash and I would be that much further along in the AM. as I was deleting the 4 partitions on my system drive via the windows installer I managed to accidentally delete a partition on a data disk.

well, this led me down a rabbit hole. I use snapraid so I was setting things back up in disk management and noticed the unallocated space on my drive. let me preface this by saying, if it is not evident, i'm entirely pedantic and OCD about these things.

To "right" it I attempted to wipe the entire disk and was going to simply reformat it and recreate it with snapraid. so far so good. After the format however I noticed my disk had a 16mb MSR created where some of my other disks (even the ones of the same make, model, type, size, etc) had 128mb MSR. with no rhyme or reason for the discrepancy since they'd all been formatted using diskpart I began looking into why that is.

microsoft tells me that small disks (under 16gb or some such) get a 16mb one and large disks got a 128mb msr. well every one of my disks is 2TB or larger so I have no idea what's going on.

what i'm trying to accomplish here is having all my disks appear the same in diskpart/have the same msr in size and offset etc. best i can tell it SHOULD be a 16mb as of win10 (even though MS says differently at least based on size) which further blows my mind as the overwhelming majority of these disks were all procured during the windows 10 era so i cant understand the 128mb MSRs.

i'm trying to get all my disks to have the 16mb MSR partition/match as its evidently what they're given nowadays. how can i accomplish this without wiping the other drives and losing all their data? Apparently disk 16 through 24 is how a freshly formatted disk should appear (as well as 9 & 28). Is there a way to delete the 128mb and recreate it as 16mb and extend the data/primary portion to refill that space? or shrink the MSR to the correct size directly and expand the primary? what's my solution in this case?

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My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    CPU
    Intel i7 9900K
    Motherboard
    Asus Maximus X Formula
    Memory
    64GB G.Skill DDR4
    Graphics Card(s)
    EVGA 2080ti
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    U2718Q
    Screen Resolution
    4K
    Hard Drives
    2TB Samsung 970 EVO Plus
    1TB Samsung 970 EVO Plus
    ~200TB worth of spinners in a DAS via LSI HBA
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    Razer Naga Trinity
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    Brave
The offset (partition starting sector) of the first partition is responsible, I believe, if you could get each disk to start with the same offset then the MSR would be the same size for each. Not an expert here, so maybe some research needed (not going to be light reading) on your part. :)
 

My Computer

System One

  • OS
    Windows 11 Pro 22H2, build: 22621.521
    Computer type
    PC/Desktop
    Manufacturer/Model
    Scan 3XS Custom 1700
    CPU
    Intel i7-12700K 3.6GHz Base (5.0GHz Turbo)
    Motherboard
    Asus ProArt Creator B660 D4
    Memory
    64GB DDR 3600Mhz
    Graphics Card(s)
    Asus Tuff RTX 3080 10GB OC
    Sound Card
    Onboard Realtek
    Monitor(s) Displays
    Gigabyte G32QC 32inch 16:9 curved @2560 x 1440p 165Hz Freesync Premium Pro/ Dell SE2422H 24inch 16:9 1920 x 1080p 75Hz Freesync
    Screen Resolution
    2560 x 1440p & 1920 x 1080p
    Hard Drives
    WD SN570 1TB NVME (Boot), Samsung 870QVO 1TB (SSD), SanDisk 3D Ultra 500Gb (SSD) x2, Seagate 3Tb Expansion Desk (Ext HDD), 2x Toshiba 1Tb P300 (Ext HDD)
    PSU
    Corsair RM1000X Modular
    Case
    Corsair 4000D Airflow Desktop
    Cooling
    Corsair Hydro H150i RGB Pro XT 360mm Liquid Cooler, 3 x 120mm fans, 1x Exhaust
    Keyboard
    Microsoft Ergonomic
    Mouse
    Logitech G402
    Internet Speed
    800Mbs
    Browser
    Edge Chromium
    Antivirus
    Defender, Malwarebytes
Just delete the existing MSR and recreate it with a 16 MB size.
 

My Computers

System One System Two

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Homebuilt
    CPU
    AMD Ryzen 7 3800XT
    Motherboard
    ASUS ROG Crosshair VII Hero (WiFi)
    Memory
    32GB
    Graphics Card(s)
    EVGA GeForce GTX 1080 Ti
  • Operating System
    Windows 11 Education
    Computer type
    Laptop
    Manufacturer/Model
    Dell Inspiron 7773
    CPU
    Intel i7-8550U
    Memory
    32GB
    Graphics card(s)
    Nvidia Geforce MX150
    Sound Card
    Realtek
    Monitor(s) Displays
    17"
    Screen Resolution
    1920 x 1080
    Hard Drives
    Toshiba 512GB NVMe SSD
    SK Hynix 512GB SATA SSD
    Internet Speed
    Fast!
Please run: (currently requires Ten Forums logon)


Post a share link using one drive, drop box, or google drive.




In this link dated 06/01/2017 it displayed:



Code:
How big is the MSR?
When initially created, the size of the MSR depends on the size of the disk drive:

On drives less than 16GB in size, the MSR is 32MB.
On drives greater than or equal two 16GB, the MSR is 128 MB.
As the MSR is divided into other partitions, it becomes smaller.





In this link dated 11/05/2020 it displayed:

Code:
The size of the MSR partition varies.
For GPT disks that are smaller than 16 GB, the size of the MSR partition is 32 MB.
For disks larger than 16 GB, the MSR partition is 128 MB.




In this link dated 12/15/2021 it displayed:


Code:
In Windows 10, the size of the MSR is 16 MB.
 
Last edited:

My Computer

System One

  • OS
    Windows 10
    Computer type
    Laptop
    Manufacturer/Model
    HP
    CPU
    Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz
    Motherboard
    Product : 190A Version : KBC Version 94.56
    Memory
    16 GB Total: Manufacturer : Samsung MemoryType : DDR3 FormFactor : SODIMM Capacity : 8GB Speed : 1600
    Graphics Card(s)
    NVIDIA Quadro K3100M; Intel(R) HD Graphics 4600
    Sound Card
    IDT High Definition Audio CODEC; PNP Device ID HDAUDIO\FUNC_01&VEN_111D&DEV_76E0
    Hard Drives
    Model Hitachi HTS727575A9E364
    Antivirus
    Microsoft Defender
    Other Info
    Mobile Workstation

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