Since your system is installed as UEFI, the reference may be referring to the K partition, since there is normally one hidden partition (MSR). I am not completely sure the reference is even referring to the partition since I normally see those listed as HardDiskVolume9. If you are running RAIDs, it may be related to something with that but I have no experience.
I'm not sure what a "K" partition is. If it's just a normal partition set in Disk Manager, my "K" partition is where I store kits.
As far as adding partitions, this SSD was configured this was when I put it in and installed Windows 8.1. I'm not sure exactly WHAT it wants all those partitions that are hidden and have no letters 'cause I didn't create them. It (either the SSD or Windows 8.1, then Windows 10 did 'em)... When I had to re-install Windows 10, it formatted whatever and created whatever. The Windows 10 upgrade was tried and failed twice, then finally installed from install media, during which it formatted the primary partition. Here's the diskpart stuff:
DISKPART> list disk
Disk ### Status Size Free Dyn Gpt
-------- ------------- ------- ------- --- ---
Disk 0 Online 931 GB 120 GB *
Disk 1 Online 3726 GB 0 B *
Disk 2 Online 1863 GB 0 B *
Disk 3 Online 3726 GB 0 B *
Disk 4 No Media 0 B 0 B
Disk 5 No Media 0 B 0 B
Disk 6 No Media 0 B 0 B
Disk 7 No Media 0 B 0 B
Disk 8 Online 7633 MB 0 B
Disk 9 No Media 0 B 0 B
DISKPART> list partition
Partition ### Type Size Offset
------------- ---------------- ------- -------
Partition 1 Primary 146 GB 1024 KB
Partition 2 Recovery 450 MB 146 GB
Partition 3 Recovery 300 MB 146 GB
Partition 4 System 100 MB 146 GB
Partition 5 Reserved 128 MB 146 GB
Partition 6 Primary 117 GB 147 GB
Partition 7 Primary 58 GB 264 GB
Partition 8 Primary 146 GB 322 GB
Partition 9 Primary 97 GB 469 GB
Partition 10 Primary 97 GB 566 GB
Partition 11 Primary 146 GB 664 GB
WAY back in the olden days when I installed the original 256GB SSD on my previous system, I recall the instructions making a big deal of having an unpartitioned space for the SSD to use for over provisioning. As I understand it, the Samsung 840 EVO doesn't have this internally, so when I installed the 1TB SSD in this box I just took the last chunk of the SSD and told Samsung Magician to use the 120GB for that.
I just left Partitions 2, 3, 4 and 5 alone once Windows 10 1511 was on and working. They're too small to worry about, and as long as they just sit there and don't cause any trouble I'm happy to ignore them. If I need to do something with them, if you tell me how to delete the ones that shouldn't be there. I'll dump 'em and move all the other partitions down to take up the space.
Also, if you have added partitions in front of a prior partition, it might mess up the normal counting procedure.
Haven't. At least I haven't. All the partitions with letters were done when the drive went in. They haven't changed. Any partition that got created in front of another partition got done by the SSD or Windows at install as far as I know.
Would you be willing to explain how your drive got to its current configuration? The partitions shown are not the usual install configuration.
It's got to be either the SSD installation and configuration in Samsung Magician, or the Windows 8.1, then Windows 10 (back when the original worked), then the Windows 10 1511 re-install 3 times installations. I just let them do their thing. I went out and rummaged around and I can't even find out what partitions are SUPPOSED to be there, what's actually used by Windows, and what to do with the extras. Lots of noise, but very little light.
I remember errors showing on my system when the system was set to optimize a Recovery Partition. Once I turned that off the errors stopped. You might check your system to see what partitions are set for Scheduled Optimization. SSDs normally don't like doing that.
I haven't the foggiest notion how to even tell it to optimize a recovery (or any other partition)... Is this something Windows just DOES, or something you told it to do that I may have told mine to do without knowing any better?
If I am remembering correctly you were also showing USB errors. Do you have any USB devices connected other than a keyboard or mouse?
There's USUALLY at least one flash drive plugged in, along with a USB front panel with a half dozen card readers, 4 USB 2 ports, 2 USB 3 ports, and an eSATA port... Those are always plugged in.
Edit: If you get a chance could you use Diskpart to list the partitions on that drive so we can check the offsets for the partitions? I will assume you know how to do that, if not check back.
Up above... BTW: I haven't gotten any errors in the last 24+ hours even though the standard backups have run and I've been doing the normal pummeling the box... Interesting...