Wie kann ich fsck bei nächstem System Start forcieren ?

I would recommend to use different maximum mount counts for each partition instead of just giving different mount counts.
The reason is that after a power failure, every partition gets checked and the mount count reset.
Then the next time when a check occurs, all partitions will be checked, if they have the same maximum mount count.

For avoiding that two or more partitions are checked at the same time too often, a good idea is to use prime numbers ( http://en.wikipedia.org/wiki/Prime_number )

Here is a list of prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, ...
You can also use other numbers as long as two of them won't share any prime factors.

To stay around 20 (default value, has prime factors 2 and 5 because 20 = 2 * 2 * 5 ) you can use these different maximum mount counts for your five partitions:

17, 19, 20 (=2*2*5), 21 (=3*7), 23

tune2fs -c 17 partition1
tune2fs -c 19 partition2
tune2fs -c 20 partition3
tune2fs -c 21 partition4
tune2fs -c 23 partition5

German version available: http://michaelmess.de/hobbies/linux/tuning/

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