Okay, firstly if they’re not RAR - probably not even valid individual ISO files.
Then the above ideas did not work, the following I found did work so it makes sense to update this thread with an alternative solution which worked for me today!..
There’s a really simple way of joining separate parts of iso files that a fellow techie called [B]ZiNgABuRgA [/B] described as below:
What you need to do is open Notepad, and copy the following line:
copy /b 1.iso+2.iso+3.iso+4.iso+5.iso fullISO.iso
(I’m assuming your files are 1.iso, 2.iso etc)
Anyways, now save the file as [B]j.bat[/B] in the same folder as the ISO parts.
Now run [B]j.bat[/B] as its a Batch file and will open a small command window whilst it joins each part in sequence together to create the full ISO which you can then mount as a drive or burn to a DVD etc. et viola ! much better than trying to use the programs noted in this thread.