Problem on ext USB ports

[satimis]

Hi folks,

Gentoo_amd64
Gnome-light
Motherboard-Asus A8N-VM
USB 2.-0

There are 4 USB ports on motherboard and 2 ext USB ports connected to the board slot. Gentoo does not detect the ext USB ports. Whenever I tried to mount a pendrive on either of them following warning popup;

.../dev/sda does not exist.

The pendrive can be mounted on the motherboard USB ports.

The ext USB ports are working. They can be detected when running Knoppix LiveCD. Also they can be detected on WinXP which is running on its own HD.

Please advise how to discover and fix the problem. TIA

B.R.
satimis

[apoorv_khurasia]

On my box they appear as /dev/sdb1 etc.... Not as /dev/sda (the problem here is not 'a' or 'b' but a1 or a.) Try /dev/sda1 or sda2 or sdb1 for that matter. Look at your dev database to find out more.