linux user group brescia

Problema:
In pratica anche se vedo nell'fdisk una
partizione, non c'e' in /dev
Qualcuno mi spiga come risolvere il
problema? 


brainld root # fdisk /dev/hda

The number of cylinders for this disk is set to 39703.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
   (e.g., DOS FDISK, OS/2 FDISK)

Command (m for help): p

Disk /dev/hda: 20.4 GB, 20490559488 bytes
16 heads, 63 sectors/track, 39703 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/hda1               1         969      488344+  82  Linux swap / Solaris
/dev/hda2             970       20345     9765504   83  Linux
/dev/hda3           20346       39703     9756432   83  Linux

Command (m for help): q

brainld root # mkfs.ext3 /dev/hda3
mke2fs 1.35 (28-Feb-2004)
Could not stat /dev/hda3 --- No such file or directory

The device apparently does not exist; did you specify it correctly?
brainld root #

Grazie

Pedro