Freeware Sawzip now allows disk spanning (SawzipNG)
See http://users.skynet.be/saw

I got this far. It works with backing up to the harddrive but disk spanning will fill the first disk then "stall".

I figured out when it appears to stall, removing then adding another disk continues the process & renumbers the disk.
There's no way I would trust an end user to run this way.

Any ideas anyone???

This is the code:

LOCAL cZipfile, cBackupPath,cRestorePath, cMask
cZipfile = "a:\"+ SUBSTR(SYS(2015), 4) + ".zip"

cMask = "*.*"
cBackupPath = GETDIR("C:\","Select directory to backup","BACKUP DIRECTORY?",64)
cRestorePath = GETDIR("C:\","Select where to restore","RESTORE DIRECTORY?",64)
IF !DIRECTORY(cBackupPath) OR !DIRECTORY(cRestorePath)
MESSAGEBOX("Both a backup directory and a restore directory must be selected",16,"Missing directory")
RETURN
ENDIF


WAIT WINDOW "BACKING UP FILES ... ONE MOMENT PLEASE" NOWAIT
oSAWArchive = CREATEOBJECT("SAWZipNG.Archive")
oSAWArchive.Create(cZipfile,1) && 1 allows disk spanning
Local lcPath, cZippedFile, nProgressValue, nProgressMax
cZippedFile = Sys( 2000,cBackupPath+cMask)
nProgressMax=ADIR(aryFiles,cBackupPath+cMask)
RELEASE aryFiles
nProgressValue= 1
oSAWArchive.TempPath=sys(2023) && Temp directory for spanning
Do While !Empty( cZippedFile )
LcSAWFile = cBackupPath+cZippedFile
nProgressComplete = INT(nProgressValue/nProgressMax*100)
sMessage = "BACKING UP: " + TRANSFORM(nProgressComplete)+"% " + Replicate("|",INT(nProgressComplete/2))
set message to sMessage && display progress in taskbar
oSAWArchive.Addfile(lcSAWFile)
LcSawFile = ""
cZippedFile = Sys( 2000,cBackupPath+cMask,1)
nProgressValue = nProgressValue + 1
Enddo
oSAWArchive.close
oSAWArchive = .NULL.


WAIT CLEAR
MESSAGEBOX("Backup Completed")
set message to

RETURN