USB-memory not detected during boot. But works later.

**LinuxSam** · 04-06-2003, 12:14 AM

Hi! (I'm using KNOPPIX 3.2 from 2003-03-30)

For some reason on my computer KNOPPIX refuses to detect my USB-memory that I want to use as a persistent homedirectory. I don't know the reason for this but maybe it has something to do with my SCSI-card or maybe my USB-mouse or my USB-scanner.

If, when KNOPPIX is done booting, I manually load the module usb-storage by typing modprobe usb-storage I have access to the device. But that is too late to use it as a persistent homedirectory. (after boot lsmod shows that the usb-storage module is NOT loaded)

Is there a way to force KNOPPIX to load the usb-storage module during boot?

On my friends computers it works without any problems.

My system:

AMD XP1500+
MSI K7T266 Pro2
256Mb DDR
2 x 80 Gb WD harddrives (hda and hdc)
1 x 18,3 Gb IBM UltraStar SCSI (sda)
1 x DVD-rom (hdb)
1 x PlexWriter SCSI (sr1)
1 x Plextor Ultraplex SCSI (sr0)
Tekram DC-390F (SCSI-card)
3Com Etherlink XL 100Mbit
PoV Geforce3 Ti200 128Mb DDR
AOpen AW744 (soundcard)
bt878-based TV-card (Hauppage)
Logitec MouseMan Dual Optical (USB-mouse)
Canon FB630 (USB-scanner)

/LinuxSam

**rickenbacherus** · 04-06-2003, 12:27 AM

Have a look at /etc/modules

**LinuxSam** · 04-06-2003, 12:50 AM

That works when I boot a regular system from harddrive yeah.
But it is kind of a problem when I boot KNOPPIX from CD. don't you think?

or have I missed something?

/LinuxSam

**rickenbacherus** · 04-06-2003, 01:13 AM

Well yes that's true. What I was getting at is; is it in there? Is it supposed to be loaded at boot? I thought it was. If it is then why isn't it loading? Does dmesg tell you anything about it.

**LinuxSam** · 04-06-2003, 01:30 AM

Ok... that's what you where after... I'll boot it and see what I get...

BRB...

/LinuxSam

**LinuxSam** · 04-06-2003, 01:46 AM

Well, now I'm inside KNOPPIX and actually there is nothing inside /etc/modules atleast not any modules listed. Just some text.

dmesg only tells me:

hub.c: new USB device 00:11.2-2, assigned address 3
usb.c: USB device 3 (vend/prod 0xea0/0x6803) is not claimed by any active driver.

but when I load the module manually with modprobe usb-storage I get this:

Initializing USB Mass Storage driver...
usb.c: registered new driver usb-storage
scsi2 : SCSI emulation for USB Mass Storage devices
Vendor: OTi Model: Flash Disk Rev: 1.11
Type: Direct-Access ANSI SCSI revision: 02
Attached scsi removable disk sdb at scsi2, channel 0, id 0, lun 0
SCSI device sdb: 258048 512-byte hdwr sectors (132 MB)
sdb: Write Protect is off
sdb: sdb1 sdb2
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 3
USB Mass Storage support registered.

And that is what I get on my friends computers during boot. But for some reason on this computer it fails to detect it...

/LinuxSam

**garyng** · 04-06-2003, 02:29 AM

You are luckier than me, when I said "modprobe usb-storage", I get nothing. Well, at least now I know the my usb-storage module isn't doing the proper thing and don't need to blindly search around those /dev/sd?

Would any linux expert give me a hint on why usb-storage did nothing as supposed on my machine ?

Originally Posted by LinuxSam

but when I load the module manually with modprobe usb-storage I get this:

Initializing USB Mass Storage driver...
usb.c: registered new driver usb-storage
scsi2 : SCSI emulation for USB Mass Storage devices
Vendor: OTi Model: Flash Disk Rev: 1.11
Type: Direct-Access ANSI SCSI revision: 02
Attached scsi removable disk sdb at scsi2, channel 0, id 0, lun 0
SCSI device sdb: 258048 512-byte hdwr sectors (132 MB)
sdb: Write Protect is off
sdb: sdb1 sdb2
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 3
USB Mass Storage support registered.

And that is what I get on my friends computers during boot. But for some reason on this computer it fails to detect it...

/LinuxSam

**LinuxSam** · 04-06-2003, 02:36 AM

what do you get in your log when you unplug and plugin you USB-memory? anything?
if you get nothing, are you sure the USB-memory works? have you tried it in another OS? on another computer?

and I hope that you did the modprobe usb-storage with root priveliges, right?

/LinuxSam

**garyng** · 04-06-2003, 02:59 AM

This is what I got :

Initializing USB Mass Storage driver...
usb.c: registered new driver usb-storage
usb-uhci.c: interrupt, status 2, frame# 306
scsi1 : SCSI emulation for USB Mass Storage devices
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 2
USB Mass Storage support registered.

The difference I see is that the usb-storage module refuse to assign it to a sd? device and if it is not strange enough, The KDE info center does tell me that there is a USB Compact flash & microdrive reader with the following information :

Vendor ID : 0x7c4(DataFab System Inc.)
Product ID : Oxa400(Compact Flash /Microdrive Reader)

Originally Posted by LinuxSam

what do you get in your log when you unplug and plugin you USB-memory? anything?
if you get nothing, are you sure the USB-memory works? have you tried it in another OS? on another computer?

and I hope that you did the modprobe usb-storage with root priveliges, right?

/LinuxSam

**LinuxSam** · 04-06-2003, 03:03 AM

you could ofcourse force the device to be detected as something else... by supplying options for the module.

Is the manufacturer information correct? or is that wrong too?

/LinuxSam