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Partitioning Scheme Changes when you install Windows 8.1

fedyHamito

New Member
When I install Windows 8.1 it changes the hard drive partitioning scheme on my computer. In the Windows disk management it shows that when you install Windows 8.1 it adds a small hidden 350MB recovery partition. The first question that pops into my mind is why would Microsoft do that without letting you know and second what the hell it for? For a second I thought it was malware or something bad, until I reinstalled Windows 8.1 that I found out that it was apart of the Windows 8.1 installation. I'll heard that its the Windows 8.1 recovery repair tool partition but how do you use it?Capture.PNG
This is what my partition scheme looks like, this is on my laptop so I not using a dual boot scheme, however its formatted GPT so that I might clone it to a SDD that might be used as a dual boot machine in the future. The rest of the partitions aside from the new 350 Mb partition when you install Windows 8.1 is a default install of GPT partitioning scheme. The SYSTEM FAT32 partition has boot files however I'm using the main C: drive as the bootloader for now.
 

My Computer

System One

  • OS
    Windows 8.1 Pro

CountMike

Well-Known Member
VIP Member
Guru
You have a laptop, UEFI and GPT formated disk, each of them take it's toll.
 

My Computer

System One

  • OS
    Windows 8.1 Pro
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home made
    CPU
    AMD Ryzen7 2700x
    Motherboard
    Asus Prime x470 Pro
    Memory
    16GB Kingston 3600
    Graphics Card(s)
    Asus strix 570 OC 4gb
    Hard Drives
    Samsung 960 evo 250GB
    Silicon Power V70 240GB SSD
    WD 1 TB Blue
    WD 2 TB Blue
    Bunch of backup HDDs.
    PSU
    Sharkoon, Silent Storm 660W
    Case
    Raidmax
    Cooling
    CCM Nepton 140xl
    Internet Speed
    40/2 Mbps
    Browser
    Firefox
    Antivirus
    WD

my2cents

Veni, Vidi, Vici
VIP Member
Guru
Can you provide a screenshot of your disk management and identify your installation media please (retail, downloaded ISO, etc)?

Here's what mine looks like:

Screenshot (48).png
 

My Computer

System One

  • OS
    Windows 8.1
    Computer type
    PC/Desktop
    CPU
    Intel G2020
    Motherboard
    ASRock B75M-DGS R2.0
    Memory
    8GBs @ 1333 MHz
    Hard Drives
    Samsung 840 EVO
    PSU
    400w
    Internet Speed
    57/11

genet

New Member
Guru

My Computer

System One

  • OS
    Windows 10
    Computer type
    Laptop
    System Manufacturer/Model
    Lenovo G580
    CPU
    Intel Core i5-3230M
    Memory
    8 GB
    Graphics Card(s)
    Intel HD Graphics 4000
    Browser
    Microsoft Edge
    Antivirus
    Windows Defender, standard user account
    Other Info
    UEFI firmware (BIOS) embedded Windows 8 product key.

my2cents

Veni, Vidi, Vici
VIP Member
Guru

The unusual thing about the OPs issue is that his recovery partition is sized at 350mbs which is usually the size for a Legacy installation. Now, if you look at my image, mine is sized at 300mbs for a UEFI installation; however, that sizing (300 mbs) has caused issues when trying to use the new Windows System Imaging function and was reported to Microsoft accordingly. So, I'd really like to see his full partition structure and identify his installation media to see if MS has incorporated a fix to (possibly) resize that recovery partition (on new installations) so one doesn't encounter an issue when trying to use the System Imaging function.
 

My Computer

System One

  • OS
    Windows 8.1
    Computer type
    PC/Desktop
    CPU
    Intel G2020
    Motherboard
    ASRock B75M-DGS R2.0
    Memory
    8GBs @ 1333 MHz
    Hard Drives
    Samsung 840 EVO
    PSU
    400w
    Internet Speed
    57/11

fedyHamito

New Member
Capture2.PNG
The first 200MB partition has boot and memtest files I guessing that's the partition you access when you tap F9 or F10, or whatever that you press to get into the menu screen where you can boot in safe mode, memtest option and such.

Then I have the main C: with a clean install of Windows 8 or 8.1 in this case, just named Windows 8 for now.

I've created a separate partition for my desktop apps call Applications, and I still having the manufacture recovery partition with manufacture default install of Windows 7 intact that's the 25GB partition, but I plan on getting rid of that one since I have the created the recovery disks for that.

And then there's the Windows 8.1 350MB partition.
 

My Computer

System One

  • OS
    Windows 8.1 Pro

my2cents

Veni, Vidi, Vici
VIP Member
Guru
Is that an OEM partition structure? If so, forget everything I said (and thought) because that is an entirely different ballgame. With that said, maybe genet (or someone else) can continue to address your concerns because I was off on the wrong track. Good luck.

my2cents
 

My Computer

System One

  • OS
    Windows 8.1
    Computer type
    PC/Desktop
    CPU
    Intel G2020
    Motherboard
    ASRock B75M-DGS R2.0
    Memory
    8GBs @ 1333 MHz
    Hard Drives
    Samsung 840 EVO
    PSU
    400w
    Internet Speed
    57/11

genet

New Member
Guru
And then there's the Windows 8.1 350MB partition.

Everything is alright.

Windows 8.1 creates 2nd Recovery Partition - Windows 8 - MSFN Forum

"If you have a computer with Windows 8 that was installed by an OEM on a GPT disk, the Windows 8.1 update from the Store will create a second recovery partition! Alternatively, if your OS is installed on an MBR disk, the 2nd partition is not created. This second partition is seen as a 350MB Recovery partition."

Update Windows 8 to 8.1 partition split - Microsoft Community

"I had Windows 8 in disk partition F.
I updated to 8.1.
It appears that the update split partition F into two partitions, a shrunken F followed by a Recovery Partition.
The Recovery Partition's size is 350MB, the amount by which the original F partition was reduced."



Note: This is not same as 350MB System Reserved partition.

Here is some more info -> http://www.eightforums.com/installa...ilt-asus-recovery-partition-2.html#post330641
 
Last edited:

My Computer

System One

  • OS
    Windows 10
    Computer type
    Laptop
    System Manufacturer/Model
    Lenovo G580
    CPU
    Intel Core i5-3230M
    Memory
    8 GB
    Graphics Card(s)
    Intel HD Graphics 4000
    Browser
    Microsoft Edge
    Antivirus
    Windows Defender, standard user account
    Other Info
    UEFI firmware (BIOS) embedded Windows 8 product key.

theog

VIP Member
VIP Member
Gold Member
Is that an OEM partition structure? If so, forget everything I said (and thought) because that is an entirely different ballgame. With that said, maybe genet (or someone else) can continue to address your concerns because I was off on the wrong track. Good luck.

my2cents

Is that an OEM partition structure?
OEM in part
Windows 7 in part
Upgraded to Windows 8.1 in part.
 

My Computer

System One

  • OS
    ME, XP,Vista,Win7,Win8,Win8.1
    Computer type
    PC/Desktop
    Other Info
    Notebooks x 3

    Desktops x 5

    Towers x 4

4wd

New Member
Power User
Got the disk partitions looking like a crow's nest (same as OP's) on my OEM laptop (with recovery etc). But on another laptop made a clean w8 install + 8.1 upgrade, it made only 2 partitions (I did later split C: into C: os and D: files, see attachment).
 

Attachments

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    311.png
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My Computer

System One

  • OS
    W8.1, W7
    Computer type
    Laptop
    System Manufacturer/Model
    HP \ Toshiba \ Lenovo \ Dell E7440
    Browser
    FF

theog

VIP Member
VIP Member
Gold Member
OP has a UEFI install.
 

My Computer

System One

  • OS
    ME, XP,Vista,Win7,Win8,Win8.1
    Computer type
    PC/Desktop
    Other Info
    Notebooks x 3

    Desktops x 5

    Towers x 4

fedyHamito

New Member
this laptop is still using BIOS However the drive is GPT but once was a MBR. I didn't want the limitations of a MBR disk for maybe when I clone to a SSD so then I could use Hyper-V that won't defrag my main drive badly since SSD's don't need to be contiguous but iam totally unaware of what that looks like since 1. i don't have a SSD yet and 2. its not that important.
 
Last edited:

My Computer

System One

  • OS
    Windows 8.1 Pro

theog

VIP Member
VIP Member
Gold Member
this laptop is still using BIOS However the drive is GPT but once was a MBR. I didnt want the limitations on the MBR disk for maybe when I clone to SSD so then I could Hyper-V that wont defrag my main drive badly since sdds don't need to be contiguous but iam totally unaware of what that looks like since 1. i dont have a SSD yet and 2. its not that important.

Can you repost the partition lay-out screenshot, as the screenshot is a UEFI partition lay-out, not a BIOS partition lay-out.
 

My Computer

System One

  • OS
    ME, XP,Vista,Win7,Win8,Win8.1
    Computer type
    PC/Desktop
    Other Info
    Notebooks x 3

    Desktops x 5

    Towers x 4

theog

VIP Member
VIP Member
Gold Member
this laptop is still using BIOS However the drive is GPT but once was a MBR. I didnt want the limitations on the MBR disk for maybe when I clone to SSD so then I could Hyper-V that wont defrag my main drive badly since sdds don't need to be contiguous but iam totally unaware of what that looks like since 1. i dont have a SSD yet and 2. its not that important.

Can you repost the partition lay-out screenshot, as the screenshot is a UEFI partition lay-out, not a BIOS partition lay-out.


You have reposted the UEFI partition lay-out, which is the same as post one.
 

My Computer

System One

  • OS
    ME, XP,Vista,Win7,Win8,Win8.1
    Computer type
    PC/Desktop
    Other Info
    Notebooks x 3

    Desktops x 5

    Towers x 4

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