Windows 10: Local Disks are missing

I have a Windows 10 pro Originally Windows 8.1 pro and I have updated my Windows from "Download Windows 10 ISO".The problem is, there was around 386 GB or something like that in my Windows including 3 disks.Local Disk C,D,E. But After a few yearspresently, I have 77.4 GB free of 172 GB. Now having only Local Disk C while other two disappeared. I want to get my Windows back to the storage space like it had before. Everyday, my Disk Storage is decreasing and I am using the "Disk Cleanup" process regularly. An acquaintance of mine suggested that I have to format Windows, Sending important f

:)

 

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.

 

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!

 

My local disk is missing from file explorer.

I installed windows 10 on my new laptop yesterday. At time i also created a partition of some 850 gb. After coplete installation of windows when i opened my file explorer it only showed 'local disk (C' on which windows was installed . Then I open my
Disk manager and searched for the missing drive . It was listed down there but not on the file explorer. I tried formatting the missing drive but nothing happened. What should I do????