Copying customizations from USB to USB; backing up customizations

Until recently, I was using Knoppix on a USB key with a persistent data store as a large normal file, which I would back up frequently so that if I screwed something up, I could just restore that one file and get back to where I was without having to redo all my customizations from scratch. However, I'm now interested in experimenting with VirtualBox, which uses files that are larger than can be contained in a FAT32 filesystem, let alone a virtual filesystem file within that filesystem.

I tried using the "experimental" script to make a new USB key with large file capabilities, but now I realized that 1) I don't know how to transfer my customizations to this new type of persistent data store, and 2) once I figure out how to do this, backing up these customizations will go from being a minor inconvenience to being a major chore, since most of my computers cannot natively read this new filesystem. Does anyone here have any suggestions for a simple backup procedure I could use?

And why does the script use this "ReiserFS" filesystem, anyway? From the little I've read about it, development on it has ground to a halt. Wouldn't it be better to have the install script ask the user what filesystem it should use?

I also tried pre-formatting the new USB with NTFS, only to find that Knoppix won't install on NTFS. Why not? Is there an easy way for me to get it onto an NTFS USB key?

ad 1) You can try to start your Knoppix - with persistent memory in an overlay file - without activating the persistent memory (cheatcode: knoppix noimage). To get access to the content of the persistent memory you have to create a directory on a partition with available free space; I used in this example '/mnt/repair'. Start in a terminal:

Code:

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su
mkdir /mnt/repair
losetup /dev/loop1 /mnt-system/KNOPPIX/knoppix-data.img
mount /dev/loop1 /mnt/repair

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Copy all of '/mnt/repair' to partition#2 of the other USB stick you've already prepared to use persistent memory in an overlay partition.

Don't forget to shutdown your stick with:

Code:

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umount /dev/loop1
losetup -d /dev/loop1

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ad 2) http://www.wp-schulz.de/summary/summary-backup.html

Quote:

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And why does the script use this "ReiserFS" filesystem, anyway? From the little I've read about it, development on it has ground to a halt.

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ReiserFS is a proven Linux filesystem since many years; which development do you exspect?