Windows 10: i have windows 11 pro , when i checked the security of my local disk by selecting...

hi, i have windows 11 pro , when i checked the security of my local disk by selecting properties ive come across this "account unknown " s-1-5-21.... i hope you can clarify for me what does it mean and what i can do about it ,thank you

:)

 

Recovering Local Disk

Thank you for your quick response.

It could be a compatibility issue with the latest update and your local disk. We suggest updating your disk driver. Follow these steps:

• On the Start, type Device Manager.
• Locate and select Disk drives.
• Right-click on your disk drive, select Properties.
• Go to the Driver tab and choose Update Driver.
• Once done, click OK.

Update us with the outcome so we can provide further assistance.

 

Checking Disk Consistency

Ok i did as viper suggested, but it stops checking at stage 3. It is still saying the drive is dirty, and still needs to be checked. I did a defrag and a disk cleanup, and suggestions?

 

why do 2 Local Disks get isolated?

This HP has a new SSD. I just now found this and wonder if it is stupids and/or dangerous to try <

"How to delete EFI partition with Diskpart

Step 1. Hit "Windows Key + R to open the run dialogue box, enter "diskpart" and click "OK" to open a black command prompt window.
Step 2. Type "list disk" to display all the disks of your computer. Type "select disk n" to identify which disk you need to work with. Here n stands for the disk letter.
Step 3. Type "list partition" to display all the volumes on the hard drive. Type "select partition n" to identify which partition you want to remove. Here n stands for the volume letter.
Step 4. Type "delete partition override" to remove the EFI partition. Finally, type "exit" to close the windows when you receive the message says, DiskPart successfully deleted the selected partition"

just for a better understanding, but not wanting to complete it, I took these steps >




in this context >




so C: should be using 70GB I assume (461- 391)

Am sure my lack of expert knowledge is showing!