Windows 10: Unaccounted for Dell Laptop Hard Drive space on C: drive SSD

I have a Dell Inspiron 3793 running Windows 10 Home version 1909. The C drive is a 256GB SSD, and I am noticing a bunch of unaccounted for hard drive space (see pictures below). Drive properties show 163GB used, but when I select all the files they only total to 94GB (69GB unaccounted for). If you look on the WinDirStat listing below, there is a 32GB file labelled "<Unknown>". What is going on? What can I do to free up the space?







:)

 

Replacing a laptop hard drive with a SSD

I have a Dell Latitude E5420 laptop which has a Windows 10 Pro O/S. I would appreciate a step by step guide on the procedure to replace the hard drive with a Solid State drive; specifically dealing with the transfer of all the software from the old drive to the new. I have an external hard drive I use for backups and a free version of the Macrium Reflect program on the hard drive. The SSD is brand new. I have just 50 GB in total on the 231 GB hard drive. The SSD has 250 GB capacity.

 

Replacing a laptop hard drive with a SSD

Hello Bree and others,
I replaced my laptop hard drive with a SSD successfully. I used my external drive and Macrium Reflect to make a system image of the laptop hard drive as suggested and transferred the image to the new SSD using my Macrium Boot Recovery flash drive. The only hiccup occured when I came to move the four partions onto the SSD. It seems one has to do this by moving the "C" partion last. If you try to do it before moving the the other three partions the "C" partion grabs all the available space.

 

Replacing a laptop hard drive with a SSD

I did basically what Bree suggests to upgrade the SSD in my Dell Inspiron 5577 laptop.
I did a disc image (all partitions) with Macrium Reflect to a USB connected drive (you should have a backup anyway).
Installed the new SSD, used Macrium bootable rescue media (flash drive) to boot Macrium. Restored the disc image to the new SSD.
Confirmed all was well (booted from the new SSD) then used the free version of MiniTool Partition Wizard to reclaim "C" drive space as the restore was the size of the old/smaller drive.