usb drive on red hat

slemons

just started new job today,
on red hat and i cant find where my usb drive is under red hat?

i tried /dev/usb but its not there.

any ideas?
red hat seems to have found it since the usb key has the little green light flashing on it...
thanks

Khannie

it's probably under /media or /mnt if automounted (likely) otherwise try to manually mount it....

dmesg | tail and look for it's /dev (more often than not it's /dev/sdX) then mount it normally.

slemons

thanks for that.

I still cant find it however.
here is the output of dmesg | tail

---

sda: test WP failed, assume Write Enabled
sda: I/O error: dev 08:00, sector 0
I/O error: dev 08:00, sector 0
unable to read partition table
hub.c: new USB device 00:1d.7-6, assigned address 3
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 3
SCSI device sda: 7966720 512-byte hdwr sectors (4079 MB)
sda: Write Protect is off
sda: sda1

---

But when i do
cd /dev/sda1/
i get:
/dev/sda1/ not a directory


This article
http://www.linux.com/base/ldp/howto/Flash-Memory-HOWTO/basics.htmlt

seems to suggest that the usb key will be under /proc/scsi/usb-storage-0/
and indeed i have such a folder but it doenst contain any of my data?

Could this be because it is a fat32 drive?
do i need to reformat for linux? I thought linux could read fat32?

thanks!!

slemons

BUMP, can anyone help me out here please?
all im trying to do is use a usb key under linux?

Could it be that my work wont allow me permission to mount a usb key?
Or is my key formatted in the wrong type. its fat32 in windows which shud be vfat in linux.
help please?
thanks
john

mickoneill30

mkdir /mnt/usbkey
mount /dev/sda1 /mnt/usbkey
cd /mnt/usbkey

henbane

mount -t vfat /dev/sda1 /mnt/tmp

Then try and read tmp. That should mount it r+w for root.

nuada

or just pmount /dev/sda1
which you can do as a normal user instead of as root

slemons

thanks for the help...
but...

i cant access /mnt to do

[PHP]mkdir /mnt/usbkey
mkdir: cannot create directory `/mnt/usbkey': Permission denied[/PHP]



that ok i do this instead
[PHP]mkdir ~/usbkey[/PHP]

then

[PHP]mount /dev/sda1 ~/usbkey
mount: only root can do that[/PHP]

so i cant mount anything unless im root, and thats not gonna happen soon

i try pmount but its not installed.

[PHP]pmount /dev/sda1 ~/usbkey
pmount: Command not found.
[/PHP]

i tried

[PHP]mount -t vfat /dev/sda1 ~/usbkey/
mount: only root can do that[/PHP]


so im out?
any more ideas?

thanks

GreenHell

Looks like you might not have permission to use sda1

Do a fdisk -l and see if the drive is being picked up

and then

mount -o /dev/sda1 or sdb1 /nameofmount

slemons

its being picked up alright

[PHP]
more /proc/scsi/usb-storage-0/3
Host scsi3: usb-storage
Vendor: Kingston
Product: DataTraveler 2.0
Serial Number: 5B721BA0B5E0
Protocol: Transparent SCSI
Transport: Bulk
GUID: 13fe1d0000005b721ba0b5e0
Attached: Yes[/PHP]


But where is it? Do i have to mount it?

koloughlin

If you do either of the following it should show you if it already auto-mounted, and if so where

mount

or

df -k

slemons

still no luck here.

i cant use mount unless im root.

and df -k gives nothing?

any more ideas?
or places i could go to ask for more help?
thanks

Khannie

slemons wrote:

i cant use mount unless im root.

That's right yeah. You'll need to change to root to mount the drive or use the sudo command (sudo allows you to run single commands as root, but you need to configure this on redhat).

to switch to root use: su -
then mount /dev/sda1 <directory of your choice that is empty>
then exit (so you go back to yourself)
then cd <the empty directory you chose above>
and you should be able to see the contents

Just to aid your understanding somewhat: /dev is where block devices are listed, but you need to mount those devices to a directory in order to be able to browse them.

slemons

thanks for that.

but for me to become root i need a password which i dont have!

is there any way to use a usb key without using mount?