Hello Robert,
Many thanks for your help.
Hereafter are the results of the test.
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cat /proc/partitions
major minor #blocks name

3 0 20010816 hda
3 1 5237158 hda1
3 2 1 hda2
3 5 1052226 hda5
3 6 1028128 hda6
3 7 3574431 hda7
3 8 530113 hda8
3 9 8586711 hda9
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lsmod | grep usb
usbhid 42176 0
usbcore 101496 5 ub,usbhid,ohci_hcd,uhci_hcd
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lspci
0000:00:00.0 Host bridge: Intel Corp. 82815 815 Chipset Host Bridge and Memory Controller Hub (rev 02)
0000:00:01.0 PCI bridge: Intel Corp. 82815 815 Chipset AGP Bridge (rev 02)
0000:00:1e.0 PCI bridge: Intel Corp. 82801 PCI Bridge (rev 02)
0000:00:1f.0 ISA bridge: Intel Corp. 82801BA ISA Bridge (LPC) (rev 02)
0000:00:1f.1 IDE interface: Intel Corp. 82801BA IDE U100 (rev 02)
0000:00:1f.2 USB Controller: Intel Corp. 82801BA/BAM USB
(Hub #1) (rev 02)
0000:00:1f.3 SMBus: Intel Corp. 82801BA/BAM SMBus (rev 02)
0000:00:1f.4 USB Controller: Intel Corp. 82801BA/BAM USB (Hub #2) (rev 02)
0000:01:00.0 VGA compatible controller: ATI Technologies Inc Radeon RV100 QY [Radeon 7000/VE]
0000:02:0a.0 Multimedia audio controller: Ensoniq 5880 AudioPCI (rev 02)
0000:02:0b.0 Ethernet controller: National Semiconductor Corporation DP83815 (MacPhyter) Ethernet Controller
0000:02:0c.0 Communication controller: Rockwell International HCF 56k Data/Fax/Voice/Spkp (w/Handset) Modem (rev 01)
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lsusb
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 002: ID 0aec:5010 Neodio Technologies Corp. ND5010 Card Reader
Bus 001 Device 001: ID 0000:0000
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dmesg | grep -A 3 -i usb
usbcore: registered new driver usbfs
usbcore: registered new driver hub
USB Universal Host Controller Interface driver v2.2
PCI: Found IRQ 4 for device 0000:00:1f.2
uhci_hcd 0000:00:1f.2: Intel Corp. 82801BA/BAM USB (Hub #1)
PCI: Setting latency timer of device 0000:00:1f.2 to 64
uhci_hcd 0000:00:1f.2: irq 4, io base 0xa400
uhci_hcd 0000:00:1f.2: new USB bus registered, assigned bus number 1
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
PCI: Found IRQ 9 for device 0000:00:1f.4
PCI: Sharing IRQ 9 with 0000:02:0b.0
uhci_hcd 0000:00:1f.4: Intel Corp. 82801BA/BAM USB (Hub #2)
PCI: Setting latency timer of device 0000:00:1f.4 to 64
uhci_hcd 0000:00:1f.4: irq 9, io base 0xa000
uhci_hcd 0000:00:1f.4: new USB bus registered, assigned bus number 2
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
usb 1-1: new full speed USB device using uhci_hcd and address 2
ohci_hcd: 2004 Nov 08 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
usbcore: registered new driver hiddev
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.0:USB HID core driver
ub: sizeof ub_scsi_cmd 64 ub_dev 2504
ieee1394: Initialized config rom entry `ip1394'
uba: device 2 capacity nsec 0 bsize 512
usbcore: registered new driver ub
Serial: 8250/16550 driver $Revision: 1.90 $ 14 ports, IRQ sharing disabled
parport: PnPBIOS parport detected.
parport0: PC-style at 0x378 (0x778), irq 7, dma 3 [PCSPP,TRISTATE,COMPAT,ECP,DMA]
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