Windows 10: No System partition on new clean install

I did a clean install build 10130 on separate (MBR) ssd. All other ssds (Win 7 and Win 8.1) were unplugged. I ended up with no "system" partition. I use the Win 8.1 ssd as the first in the boot order and this drive has a "system" partition from an earlier Win 10 install.
All is well and the Boot Loader Menu shows the OS to choose from.
QUESTION: Is it necessary to have a "system" partition on the Win 10 installation? Can one be added with out a new clean install??
Thanks for any help

:)

 

We couldn't finish installing updates (KB4074588), error 0x80070bc2

I have tried all the solutions to fix like using the DISM tool and
SFC /scannow. But none of the tool fixed the problem. Windows update troubleshooter reported a
Windows Update Database Corruption. In my case none of the cumulative updates installed in 2018.

I actually upgraded from Windows 7 to Windows 10. Almost a year later I did a clean install of Windows 10 but didn't delete the old 'System Reserved' partition. The new Windows 10 installation was using the old 'System Reserved' partition. And the cumulative
updates still didn't install even after a clean install.

My Suggestion: Clean install Windows 10 by deleting the C:\ drive partition in Windows 10 pre-installation environment. Delete both the C:\ drive partition and the System reserved. Create a new C:\ partition and also claim the unallocated space of old System
Reserved partition. Suppose if your C:\ drive was 100 GB and SR partition was 500 MB then your new C:\ partition size would be 100.5 GB.

Install Windows 10 on this newly created partition. Windows 10 will create a new SR partition automatically. I guarantee you after using this method you will be able to install all Windows 10 cumulative and security updates.

 

Format and create partition for Windows 10

Select each drive (partition in the window, then click delete) until there is only a single partition.

Select the single partition, then click New

This will create a recovery partition, and system primary partition, select the largest then click Next.

How to: Perform a clean install of Windows 10

 

Run Disk Management by right-clicking or pressing and holding Computer (This PC), clicking Manage > Storage > Disk Management. The drive that is labelled as System is where the boot files are stored. It is where the initial booting starts from and, if you're multi-booting, it produces a list of operating systems on the screen. The operating system you boot to will be labelled as Boot, Crash Dump and Page File and is given the drive letter C, which is not necessarily the System drive, i.e. you’re not necessarily booting to the System drive where the boot files are located. Also, the Page File could have been disabled or moved to a different drive to, say, alleviate disk space problems.

The first installed disk is numbered as disk 0 (zero) and the next one is 1 (one), etc. however, partitions are numbered from 1 (one) onwards. If you have a pre-installed version of Windows, you may have partitions without drive letters and a manufacturer’s recovery partition. These can be disregarded in terms of booting.

A single Windows installation will contain six attributes: Primary, System, Active, Boot, Page File and Crash Dump, although the Page File could have been disabled or moved.

 

Thank you for your input.

 

I'm confused, don't see how this thread fits in Network and Sharing. Maybe in Installation?

 

It's not unusual for a thread to end up in the incorrect section. But just as long as it's answered it's all good.
Jeff

 

If you removed all other drives, it is possibly to install without a System Reserved partition if you pre-partition the drive.

But my question would be how did you get a boot menu, which included the other installs, if they were not present during the install?

A picture of your Disk Management might help. Also, using an administrative command prompt and typing
bcdedit /enum all
might show you and us where the boot files are.

 

Thanks. I will do as you suggest. I will be traveling for a few days so it will next weekend before I can get to it.
To answer your question, I had three OS on 3 seperate ssd's. Win 8.1 was the drive with the system boot files. This latest Win 10 Build 10130 was a re-Install (clean off a USB) because my exsisting Win 10 10130 was acting flakey . So I removed the Win 8.1 and the Win 7 ssd's and did a clean install deleting all the exsisting partitions on the old Win 10 10130. This gave and unallocated partition and this is where I installed the Win 10. Thus no reserved partition.

 

to answer correctly _ the reinstallation of windows 10 was to an existing disk - with a prior BCD boot record (which is the entry the Boot menu is using)
and since you installed in MBR mode - there is NO reserved partition, nor is there a need for a system partition.. As MBR can share the OS partition and the System Partition

 

Thanks for the info and "correct way to explain my situation".