Find multiple files' paths with the same file name - batch-file

Question

I tried to write a batch script that find all the paths of files that have the same name as the input string. right now it can find only the first file found, and i cant think of a way to make it list multiple files locations. I am not very experienced and I need some help.
this is part of the script code:
:start
cls
echo Enter file name with extension:
set /p filename=
echo Searching...
for %%a in (C D E F G H U W) do (
for /f "tokens=*" %%b in ('dir /s /b "%%a:\%filename%"') do (
set file=%%~nxb
set folderpath=%%~dpb\
::the path of the file without the filename included "C:\folder\folder\"
set fullpath=%%b
::the path of the file with the filename included "C:\folder\folder\file"
goto break
)
)
:notfound
cls
echo Enter file name with extension:
echo %filename%
echo File Not Found!
ping localhost -n 4 >nul
goto start
:break
if "%folderpath:~-1%"=="\" set folderpath=%folderpath:~,-1%
cls
echo ? %filename% found
echo %fullpath1%
echo %fullpath2%
echo %fullpath3%
--- || ---
I want the script to search the computer and list every encountered files with the same name and I want to be able to put those files' paths into different variables.
For example, if readme.txt is the input, then I want the list of all the paths of all the files with that specific name (readme.txt) and I want to set variable for each path so I can use it after that.
example:
input:
readme.txt
output:
3 files found
C:\folder\folder\readme.txt
C:\folder\folder\folder\readme.txt
D:\folder\readme.txt
variables:
path1 = C:\folder\folder\readme.txt
path2 = C:\folder\folder\folder\readme.txt
path3 = D:\folder\readme.txt

Answer 1

Here is a single script which will performs the task requested. It searches all drives for your input filename with extension, puts each found full file path into a variable, then output those variables for you. I will not be tailoring the script for any new changes after this response, advising on how to integrate it into the rest of your script or supporting any changes you may subsequently make.
#Echo Off
Set/P "SearchTerm=Enter file name with extension: "
Set "i=0"
For /F "Skip=1" %%A In ('WMIC LogicalDisk Where^
"DriveType>1 And DriveType!=5 And FreeSpace Is Not Null" Get DeviceID'
) Do For %%B In (%%A) Do (For /F "Delims=" %%C In (
'Where/F /R %%B\ "%SearchTerm%"2^>Nul') Do (Set/A i+=1
Call Set FullPath[%%i%%]=%%C))
If %i% LSS 1 (Echo= %SearchTerm% Not Found) Else (
Echo= %SearchTerm% had %i% match(es^)
For /L %%A In (1,1,%i%) Do (
Call Echo= %%%%FullPath[%%A]%%%% = %%FullPath[%%A]%%))
Timeout -1 1>Nul
Please be warned that searching many locations and putting many files into variables may over burden your system and cause issues.