Solved Macrium Reflect - what is 'PBR image NTFS Primary'

When started it shows seven partitions.

Only one of them is is shown in red as being nearly full: 'PBR image NTFS Primary'

11.91 GB full from 12.17 GB

Is this normal and nothing to worry about?

One other question:

How to I test the 'Rescue media' I have on a cdr, without actually starting the process of restoring the image?

Thanks

It's your manufacturer's factory restore image. If you ever decide to restore your system back to the way it was when you bought your machine, then the manufacturer's restore application will be looking in that partition for the restore material. It should be nearly full, otherwise it'd be a waste of disk space seeing that the restore image in the partition won't be growing or added to. So, yeah, nothing to worry about.

As for testing your backup, until you've done a restore, I suppose you can't be 100% sure. But, a very good indicator that the restore will work is to boot into the Rescue Media, and see if you can locate the actual backups. Maybe, while in the Rescue Media environment, browse inside the backups or verify them to make sure.

Thanks