Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
Forum Thread

Any data stored on computer when transferring files from one usb drive to another?

427 833 April 27, 2023 at 01:42 PM
When plugging in 2 usb flash drives into a windows 10 computer and transferring files (such as photos, documents, etc.) from flash drive A to flash drive B, are any of the files or information about them stored on the windows 10 computer's internal drive or memory (such as cache)?
If so, is there a way to clear it? thanks to any who can provide some information on this.
About the OP
Joined Jul 2009 L4: Apprentice
833 Reputation Points
36 Deals Posted
436 Votes Submitted
427 Comments Posted

Your comment cannot be blank.

Sign up for a Slickdeals account to remove this ad.

Joined Jun 2005
Let Sleeping Dogs Lie
> bubble2 8,770 Posts
3,152 Reputation
komondor
04-28-2023 at 12:44 PM.
04-28-2023 at 12:44 PM.
well the answer seems to be maybe but not easy to reach you would not find files but there could be files in ram or on a disk cache.

https://whatsoftware.com/make-you...coverable/


Are you concerned about a person or someone with special skills?
if the drive is s spinner it is pretty easy lots of tools, for an SSD more difficult I would create a bootable version of Linux or windows and use the computer with no hard drives attached problem solved

https://www.hirensbootcd.org/

or
https://www.hirensbootcd.org/old-versions/


https://whatsoftware.com/make-you...coverable/
Reply
Joined Jul 2009
L4: Apprentice
> bubble2 427 Posts
833 Reputation
Original Poster
socal9
04-28-2023 at 09:13 PM.
04-28-2023 at 09:13 PM.
Thanks for your input. I've been trying to research this and it seems that if the data were to be written to a cache, it would be to RAM rather that the internal disk since RAM would be much quicker. Also, later updates of Windows appears to have stopped using write caching (to ram) for usb flash drives, so perhaps no data is writing to cache?

If any knows any more on this topic, please feel free to post.
Reply
Joined Jun 2005
Let Sleeping Dogs Lie
> bubble2 8,770 Posts
3,152 Reputation
komondor
04-29-2023 at 09:04 AM.
04-29-2023 at 09:04 AM.
I am not sure if anyone can give you an answer as you would literally have to have a computer with just the bare amount of files on it then copy then capture a disk image. Copy the files capture another disk image and then compare the 2 .

Like I said if you are concerned create a boot disk and disconnect your hard drive copy the files then you will know that no one can find anything as you did not use a hard drive!
Reply
Joined Jul 2003
L10: Grand Master
> bubble2 35,473 Posts
6,286 Reputation
DC
05-01-2023 at 02:44 PM.
05-01-2023 at 02:44 PM.
Quote from socal9 :
Thanks for your input. I've been trying to research this and it seems that if the data were to be written to a cache, it would be to RAM rather that the internal disk since RAM would be much quicker. Also, later updates of Windows appears to have stopped using write caching (to ram) for usb flash drives, so perhaps no data is writing to cache?

If any knows any more on this topic, please feel free to post.
As komondor has noted above, You need to:
  • Create a bootable CD or DVD disc
  • Disconnect any hard drive in the system
  • Load CD/DVD and boot the system to that disk
  • Place your 2 Thumb drives into the USB ports
  • Run your copy command to copy the data from one thumb drive to the other
  • Remove your drives (gracefully, so that all files have been closed)
  • Power off the PC
  • Reconnect the hard drives and power up the PC like normal.
Reply
Joined Jul 2009
L4: Apprentice
> bubble2 427 Posts
833 Reputation
Original Poster
socal9
05-02-2023 at 12:14 PM.
05-02-2023 at 12:14 PM.
Thank you to all who responded to my post, however my original query was not HOW to transfer files from one flash drive to another without storing information on the internal drive, but rather IS any information stored on the internal drive during transfer.

Searching the web, I found this information:

"No, it would not. Parts of the file may be cached in memory, but extracting those parts and sorting out which parts are missing would be either incredibly difficult or impossible."

and a follow up

"I think it should go without saying, but it is perhaps worth noting that even if parts of those files are in memory, they will not stay there permanently. Things like rebooting the computer or having a high utilization of memory occurring will cause those pieces to disappear relatively quickly."

Thanks to all for your responses.
Reply
Joined Jul 2003
L10: Grand Master
> bubble2 35,473 Posts
6,286 Reputation
DC
05-02-2023 at 01:50 PM.
05-02-2023 at 01:50 PM.
Quote from socal9 :
Thank you to all who responded to my post, however my original query was not HOW to transfer files from one flash drive to another without storing information on the internal drive, but rather IS any information stored on the internal drive during transfer.

Searching the web, I found this information:

"No, it would not. Parts of the file may be cached in memory, but extracting those parts and sorting out which parts are missing would be either incredibly difficult or impossible."

and a follow up

"I think it should go without saying, but it is perhaps worth noting that even if parts of those files are in memory, they will not stay there permanently. Things like rebooting the computer or having a high utilization of memory occurring will cause those pieces to disappear relatively quickly."

Thanks to all for your responses.
My Question is why does it matter to you if it's stored momentarily on the machine during the copy process?
Reply
Joined Jul 2009
L4: Apprentice
> bubble2 427 Posts
833 Reputation
Original Poster
socal9
05-02-2023 at 02:10 PM.
05-02-2023 at 02:10 PM.
Quote from DC :
My Question is why does it matter to you if it's stored momentarily on the machine during the copy process?
I did not know if it was stored momentarily on the machine. This was the reason for the post.
Reply

Sign up for a Slickdeals account to remove this ad.

Joined Jan 2005
L7: Teacher
> bubble2 2,293 Posts
200 Reputation
Sam Hobbs
05-23-2023 at 05:46 PM.
05-23-2023 at 05:46 PM.
Quote from socal9 :
windows 10 computer's internal drive or memory (such as cache)?
If so, is there a way to clear it? thanks to any who can provide some information on this.
I am not aware of operating systems using the term cache for their data but applications such as browsers do. Operating systems would use the term buffer for data being transferred in that manner. Certainly OSs use main memory. The other relevant storage would be virtual storage. The data for virtual storage would be stored in a paging file also called a swap file.

Definitely data being copied in that manner would be stored temporarily in main memory. I am not sure how to predict how likely it is that the data is written to a paging file. You should assume it would be. I do not know how to wipe a paging file clean. Since it is not clear how important this is I won't attempt to speculate. For high-security purposes there are special operating systems and procedures. For example a Tivo protects the digital rights of videos by storing most of its data encrypted on the hard drive and uses a special processor that understands the encryption so that any attempt to capture the data is ineffective. Depending on level of security, you might not need special hardware but you might need to utilize higher protection form malware. In other words, it depends.


The following is likely not relevant. Nearly half a century ago I was in the US Army and working in the Pentagon. Occasionally I had to transport disk platters (about two feet in diameter and half a foot high) to a Naval facility to get the platters degaussed, using big magnets, to wipe out all the data.
Reply
Last edited by Sam Hobbs May 23, 2023 at 05:49 PM.
Joined Jul 2016
L6: Expert
> bubble2 1,290 Posts
149 Reputation
BerMM2
06-01-2023 at 01:14 AM.
06-01-2023 at 01:14 AM.
If you need to copy sensitive info you could boot off a USB drive [techradar.com] and use it to perform the copy, then securely format it afterward if you don't plan on having to copy again.
Reply
Joined Jun 2023
New User
> bubble2 2 Posts
10 Reputation
cryptonian
06-16-2023 at 03:34 AM.
06-16-2023 at 03:34 AM.
Hmm. I might have a solution. Will share the insights soon
Reply
Page 1 of 1
Start the Conversation
 

More Computers Deals & Discounts

Link Copied

The link has been copied to the clipboard.