How to split a zip file across INDEPENDENT volumes

The freeware on Windows called "Spinzip" should do the work for your purpose ! ;) http://skwire.dcmembers.com/wb/pages/software/spinzip.php

It is based on IZARCC (automatically included in Spinzip). You have to check but the full original path may be kept in the zipped files !

See ya

I'm not aware of a program that can do that, since if you are making one zip in multi-volumes they will all be related. Your best bet may be to make 12 folders and put a GB in each one, then zip the folders individually.

In the end I created a quick python script to split the files in to sub directories for me before zipping each individually.

In case it's useful to anyone else, here's my script:

import os
import csv
import shutil

def SplitFilesIntoGroups(dirsrc, dirdest, bytesperdir):
    dirno = 1
    isdircreated = False
    bytesprocessed = 0

    for file in os.listdir(dirsrc):
        filebytes = os.path.getsize(dirsrc+'\\'+file)

        #start new dir?
        if bytesprocessed+filebytes > bytesperdir:
            dirno += 1
            bytesprocessed = 0
            isdircreated = False

        #create dir?
        if isdircreated == False:
            os.makedirs(dirdest+'\\'+str(dirno))
            isdircreated = True

        #copy file
        shutil.copy2(dirsrc+'\\'+file, dirdest+'\\'+str(dirno)+'\\'+file)
        bytesprocessed += filebytes

def Main():
    dirsrc='C:\\Files'
    dirdest='C:\\Grouped Files'

    #1,024,000,000 = approx 1gb
    #512,000,000 = approx 500mb
    SplitFilesIntoGroups(dirsrc, dirdest, 512000000) 

if __name__ == "__main__":
    Main()