Missing "Reserved System" partition

I wonder if anyone can help, please?

[  Running Win 10 Pro [ 21H1 ] 64 bit  + 8Gb RAM ]

I am having persistent problems installing update “2022-08 Security Update for Windows 10 Version 21H1 for x64-based Systems (KB5012170)”  It keeps showing Error Code 0x800f0922.

Looking at potential solutions I discovered one issue may be that the ‘System Reserved’ partition may be below 500Mb.

The problem is – I do not have a System Reserved partition,  the only partitions are;

• OEM partition [39Mb]
• Recovery Partition [11.73 Gb]  plus
• the standard operational Boot, Page File, Crash Dump, etc Primary partition.

Should there be a System Reserved partition and how does one create it?   

Also do I still need the OEM and Recovery partitions because it is some time since this machine first shipped with Win 7 Pro and I suspect no recovery info will be of any value whatsoever – or does it get updated when one upgrades to a newer system?

Any guidance will be gratefully received!