I changed my express share to map to Y: in the WinPE bootdisks then changed all the hardcodings in my job from F:\ to %ALTIRIS_SHARE% This has resolved the issue.
More info:
https://kb.altiris.com/article.asp?article=23899&p=1
Code:
REM Deploy XP SP3 Image and Drivers
REM ReplaceTokens .\Images\XPACPI3.txt .\temp\%ID%-sp3.inf
%ALTIRIS_SHARE%\RDeploy\Windows\rdeployt.exe -noprompt -md -f%ALTIRIS_SHARE%\images\XPSP3.IMG -sz1:100p -nobw -nooem
%ALTIRIS_SHARE%\RDeploy\Windows\Firm.exe Copy %ALTIRIS_SHARE%\temp\%ID%-sp3.inf PROD:\Sysprep\Sysprep.inf
DEL %ALTIRIS_SHARE%\temp\%ID%-sp3.inf
REM get rid of the old aclient.cfg file
%ALTIRIS_SHARE%\RDeploy\Windows\firm.exe delete prod:aclient.cfg
REM inject the aclient source and inp
%ALTIRIS_SHARE%\RDeploy\Windows\firm.exe copy .\Aclient.exe PROD:\drivers\_post\aclient\Aclient.exe
%ALTIRIS_SHARE%\RDeploy\Windows\firm.exe copy .\Aclient.inp PROD:\sysprep\Aclient.inp
echo Hardware Model number is %#!computer@model_num%
set model=%#*"SELECT REPLACE(model_num,' ','_') FROM computer WHERE computer_id=%ID%"%
:SP3
%ALTIRIS_SHARE%\RDeploy\Windows\firm.exe -recurse copy .\Images\Drivers\XPPROSP3\%model% PROD:\drivers
if exist %ALTIRIS_SHARE%\Images\Drivers\XPPROSP3\%model%\hal.dll goto InjectHAL
goto Exit
:InjectHAL
%ALTIRIS_SHARE%\RDeploy\Windows\firm.exe Copy PROD:\drivers\hal.dll PROD:\windows\system32\hal.dll
goto Exit
:Exit
exit
