I have a Philips Wearable Digital Audio MP3 Player USB Memory Stick. I connect it via an USB hub.

I could mount it easily under SUSE9 and RedHat9 with:
mount /dev/sda1 /mnt/usb

But now I use Fedora Core 2 with the 2.6 Kernel and it doesn't work!!
Always this error message when I tried to mount:
mount: /dev/sda is not a valid block device

I also tried this:
mount -t vfat /dev/sda1 /mnt/usb

and I tried sda2,sda3, ...., sdb1, sdb2,....

Nothing works... Here some info concerning sda from /proc/partitions:
major minor #blocks name
8 0 128000 sda
8 1 125928 sda1

This is from /proc/bus/usb/devices: (must be the memory stick)
T: Bus=01 Lev=02 Prnt=02 Port=03 Cnt=03 Dev#= 5 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=0471 ProdID=0142 Rev= 0.01
C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=100mA
I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
E: Ad=04(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms

There is no output from fdisk -l

Strange... any ideas?