[Cooker] usb devices

[Eric Fernandez]

Hi
I have tried to install 7.2beta-1 with a USB mouse and a USB iomega ZIP 
250. During installation, my USB devices are recognized correctly (the 
mouse does not work however, but it works after installation). For the Zip 
drive, a /mnt/zip is created, and in fstab an entry with /dev/sda4, 
supermount, is created. The problem is that i have no access to my drive 
(i/o error). Is it due to the presence of both USB mouse and zip ? How can 
i test whether the device /dev/sda4 is the good one ?
Eric Fernandez-Bellot
CNRS-CGM
Gif-sur-Yvette, France