I have one external drive formatted to be read by OSX only of which is a pain as two years without a Mac I lost access to all my artwork, to save that happening again if the Mac goes down I have another external drive of which I think is formatted in Fat 32 where I would like to copy all that is on the OSX formatted drive to the other drive so it can be read and written to by other operating systems likely Linux, but Windows possibly.... just in case.
Can this be done and can it be done by a 2008 Macbook ?
My artwork files never get to even 1gb in size.
Yes, if you have both the Mac OX formatted drive and the FAT32 drive hooked up to the computer, then you can copy from one to the other.
And a 2008 MacBook should be able to do it.
The only issue you would potentially have is if you have any files over 4 GB as FAT32 drives cannot handle files over that size. From your post, it sounds like your largest file is 1 GB, so you should be good.
FWIW, another option is a Windows program called MacDrive that will allow a Windows computer to read a Mac OS formatted disk. It had been a long time since I used it, so I don't know how well it still works.