Windows 10: Why is there a 3.68 gb CDFS storage being created when I transferred data from my flashdrive?

I transferred around 13 GB of data from a flashdrive to the D drive. When I inserted the flashdrive, two volumes appeared, one being a CDFS containing 3.68 GB of data. I didn't think of it as anything so I continued to transfer datawhich included an application When it was done, I safely removed the flashdrive, and the CDFS was still there.I didn't know where the 3.68 GB is allocated in my PC, so I deleted it after 2 days, and now the application isn't running. It was running just fine before I deleted the CDFS.Note: I'm an amateur, I am not that knowledgeable in windows stuff.

:)

 

Transfer data

Hi,

To better assist you, please answer the following questions:

• What's the model of your old and new phone?
• How did you transfer the data from old phone to your new one?
• What type of data did you transfer?
• Did you transfer the data directly to SD card or phone storage?

Regards.

 

settings app data is 1.2 gb

settings app data is 1.2 gb
i am using lumia 520... it is currently showing 1.2 gb settings app data in storage check....
is it fine....???
suggest me to clear some as it was only 700 mb a few days back

 

save FAVORITES list onto a flashdrive

transfer my extensive FAVORITES list onto a flashdrive - delete from my laptop.