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User profile for user: Santhiphap
Santhiphap Author
User level: Level 1
4 points

Windows Boot Camp Partition replaced by System Reserved after installation

Hey there,


I have just created a 60GB Boot Camp partition and installed Windows 7 successfully via a method with virtualbox, someone suggested on stackexchange.


I was able to run and reboot Windows with virtualbox until I restarted my Macbook to try actually booting into Windows.

On the boot selection screen, only Macintosh HD was available.

Then, back on Mac OS, virtualbox didn't let me start up the Boot Camp disk anymore so I checked the diskutil list:


/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.1 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_APFS Container disk1 439.0 GB disk0s2

3: Microsoft Basic Data System Reserved 60.9 GB disk0s3


/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +439.0 GB disk1

Physical Store disk0s2

1: APFS Volume Mac OS X SSD 185.1 GB disk1s1

2: APFS Volume Preboot 22.2 MB disk1s2

3: APFS Volume Recovery 512.1 MB disk1s3

4: APFS Volume VM 4.3 GB disk1s4

Before the reboot the Boot Camp Partition was disk0s3, 60GB.

However, during the installation process, Windows created a System Reserved partition with ~100MB space.

Now, System Reserved is disk0s3 and 60GB so I guess it kind of replaced the Boot Camp partition which completely disappeared.

I am not sure, but I guess this problem has nothing to do with the virtualbox procedure but rather with the windows installation creating the System Reserved partition.

Does anyone have an idea what could have gone wrong or how to fix this?

Would appreciate your help alot!

Ps: Im on High Sierra 10.13.6, MacBook Pro (15-inch, Early 2011)

MacBook Pro, macOS High Sierra (10.13.6), MacBook Pro (15-inch, Early 2011)

Posted on Dec 5, 2018 6:06 AM

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User profile for user: Santhiphap
Santhiphap Author
User level: Level 1
4 points

Posted on Dec 13, 2018 10:40 PM

For those having similar problems as me.


I still do not know why the System Reserved partition did "overwrite" the Bootcamp partition.

In the end it did not matter. Just format the partition again and install windows again. During the next installations windows wouldn't create a System Reserved partition anymore.


If you are having problems getting Windows Bootcamp running without a USB-Stick I would highly recommend using this guide: Installing Windows 7 or 10 Pro 64 bit without DVD or Flash Drive.


The guide appears more complicated than it actually is and is very well written.

For those who don't understand all the code, dont worry, you basically just have to copy & paste everything.


Good Luck

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User profile for user: Santhiphap
Santhiphap Author
User level: Level 1
4 points

Dec 8, 2018 7:10 AM in response to Santhiphap

I guess windows does fix the boot process for running in virtualbox but the configuration if wrong for booting on mac?


EDIT:

"When you boot between the physical Apple hardware and the virtual 
VirtualBox hardware, the Windows operating system is going to detect the
 change. For example, the two machines do not share the same MBR. Each 
MBR will have a different signature. Windows stores this signature in 
its boot partition and compares the value with the MBR when booting."


This is what I kind of expected, but how am I supposed to know. I followed a guide that didn't mention anything like this...


I found a new guide now, with a way longer procedure which I might try tomorrow.



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Windows Boot Camp Partition replaced by System Reserved after installation

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