Voilà, j'ai executé fsck sur des disques externes que j'ai (firewire et usb2) et il me sort des anneries énormes :
Quand je le lance il dit :

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linux:/home/kroax/master1/image/tps/bdii # fsck.ext3 /dev/sda1
e2fsck 1.35 (28-Feb-2004)
120GO (/dev/sda1): recovering journal
120GO (/dev/sda1) has been mounted 2297 times without being checked, check forced.
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
(…)