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Pastimes : Linux OS.: Technical questions
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From: Thomas A Watson10/31/2004 4:07:46 PM
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adding external USB 2.0 drives to a redhat 7.3 system.

I purchased Seagate 129GB External USB2. ST2120027A-RK.
I also got a 5 port usb 2.0 card.

I rebooted acute. The reboot detected the new USB2 controller and I let it configure automatically. When a drive is connected a message is sent to the console and to /var/log/messages. To watch console messages.
log in as root.
tail -f /var/log/messages

Actual log output in my case.

Oct 31 14:55:58 acute /etc/hotplug/usb.agent: Setup usb-storage for USB product bc2/500/0
Oct 31 14:56:07 acute kernel: hub.c: new USB device 00:12.2-3, assigned address 6
Oct 31 14:56:07 acute kernel: scsi4 : SCSI emulation for USB Mass Storage devices
Oct 31 14:56:07 acute kernel:   Vendor: ST312002  Model: 6A                Rev:  0 0
Oct 31 14:56:07 acute kernel:   Type:   Direct-Access                      ANSI SCSI revision: 02
Oct 31 14:56:07 acute kernel: Attached scsi disk sdd at scsi4, channel 0, id 0, lun 0
Oct 31 14:56:07 acute kernel: SCSI device sdd: 234441648 512-byte hdwr sectors (120034 MB)
Oct 31 14:56:07 acute kernel:  sdd: sdd1


The important information is the device name used to attach the drive. note: linux handles usb2 as a kind of scsi drive

In this case the device is attached to the kernal as sdd1. To mount this device as a file system as root you do the folowing.
mkdir /sdd1 #this is my mount point. some might create /mnt/sdd1
Then you mount the device. note: Most external usb2 drive units come with a vfat or win32 file format.

mount -t vfat /dev/sdd1 /sdd1 or
mount -t vfat -o rw,dmask=777,fmask=666,uid=511,gid=100 /dev/sdd1 /sdd1

user is me and group is users.


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