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From: Paul <nospam@needed.invalid>
Newsgroups: alt.comp.os.windows-10,comp.mobile.android
Subject: Re: Thumbnails, and what creates them.
Date: Sun, 3 Nov 2024 21:50:37 -0500
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On Sun, 11/3/2024 7:03 PM, micky wrote:
> In alt.comp.os.windows-10, on Sun, 3 Nov 2024 17:46:23 -0500, "Alan K."
> <alan@invalid.com> wrote:
> 
>> On 11/3/24 05:37 PM, micky wrote:
>>> Thumbnails, and what creates them.
>>>
>>> I have a lot of pictures on my Android phone, and I copy them all to my
>>> laptop, and I copy all of them to my backup drive.
>>>
>>>   In
>>> c:\users\[me]\appdata\roaming\MyPhoneExplorer\XiaomiRedmiNote8Pro[bunch
>>> of numbers]\thumbnailcache\sdcard\DCIM, I have 5 entries, 4 created
>>> today 3 of which are of photos I viewed today (and maybeeee the other
>>> one?), and one created in April of a photo I viewed today.
>>>
>>> This implies, iiuc, that windows creates the thumbnail when I do
>>> something, view the picture in any vieweer?   Some viewers?
>>>
>>> At any rate, the thumbnail is used mostly, or entirely??, when using a
>>> file manager that displays the thumbnails, right?
>>>
>>> So I don't have to worry about copying them to a final location, and in
>>> fact I can delete them all, right?  If I ever need one, Windows will
>>> recreate it????
>> Thumbnails will be recreated as needed if deleted at anytime.  The only downside is the need to 
>> remake them.
> 
> Thanks.  It was disturbing because the file name is the same and it took
> me a while to see that it was in a thumbnail directory.  I thought I had
> failed to copy all my photos from the phone to the laptop, and unrelated
> to thumbnails, later on I found out that was true.  Most of my pictures
> were in external storage but over 100 were in internal storage and I
> think I had never copied them from the phone. 
> 
> I've been using MyPhoneExlorer to both connect the phone and to copy
> from it, and I have to compare the source and dest each time to see what
> to copy, but maybe all I need to do is plug the phone into a USB port
> and use any of the Windows-based backup programs that don't copy what's
> already copied.  Like robocopy or xxcopy. 
> 

The phone doesn't have a drive letter (meaning it is MTP and
not USB Mass Storage type).

Your phone is meant to be a puzzle. Mission accomplished.

*******

https://android.stackexchange.com/questions/250944/how-to-make-a-full-local-backup-of-my-phone

   "There is no method to make a full backup of android smartphones.
    It is always only a partial backup"

https://android.stackexchange.com/questions/226573/adb-pull-stops-after-first-error

It's the stuff nightmares are made of.

   Paul