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Re: NDT Server Live CD ISO not running on USB CD-ROM?


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  • From: Richard Carlson <>
  • To: Scott Fringer <>
  • Cc:
  • Subject: Re: NDT Server Live CD ISO not running on USB CD-ROM?
  • Date: Mon, 28 Aug 2006 09:25:20 -0400

Hi Scott;

OK, make sure that sda1 is the right drive. Look at the message log or use the dmesg command to find out what drive is actually installed. For example, on my home system with multiple USB ports plugging a drive into the front port gets me
usb 1-8: new high speed USB device using ehci_hcd and address 4
usb 1-8: configuration #1 chosen from 1 choice
scsi5 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 4
usb-storage: waiting for device to settle before scanning
Vendor: LEXAR Model: JUMPDRIVE ELITE Rev: 1000
Type: Direct-Access ANSI SCSI revision: 00
SCSI device sdg: 252928 512-byte hdwr sectors (129 MB)
sdg: Write Protect is off
sdg: Mode Sense: 43 00 00 00
sdg: assuming drive cache: write through
SCSI device sdg: 252928 512-byte hdwr sectors (129 MB)
sdg: Write Protect is off
sdg: Mode Sense: 43 00 00 00
sdg: assuming drive cache: write through
sdg: sdg1
sd 5:0:0:0: Attached scsi removable disk sdg
sd 5:0:0:0: Attached scsi generic sg6 type 0
usb-storage: device scan complete
SELinux: initialized (dev sdg1, type vfat), uses genfs_contexts

So I the drive is now sdg1 not sda1. A properly functioning automount system would simplify this. .-)

Rich
At 03:47 PM 8/25/2006, Scott Fringer wrote:
Rich;
I can't mount the USB drive at all.
I have the USB stick installed prior to booting the system; does not
appear to be detected.
When I issue the sudo mount /dev/sda1 <mount point>, it returns:

mount: can't find /UNIONFS/dev/sda1 in /etc/fstab or /etc/mtab

Never during any process do I see the activity light on the USB drive
flicker.
I've verified USB is enabled in the BIOS; and the stick works fine on
another system.
I'll admit here, now, that this is the first time I've ever attempted
to mount a USB drive under Linux.

Scott

Richard Carlson wrote:
> Hi Scott;
>
> Does this mean the automount system failed or you could not manually
> mount the drive? I don't have the automounter system properly
> configured so automounting fails (any help on this would be appreciated).
>
> Did you check the messages file, or dmesg, to see if the system detected
> the drive being inserted? Can you manually create a mount point and
> then mount the drive?
>
> It does work slightly better if the USB stick is installed before the
> boot process begins. In this case the mount point is created and added
> to the /etc/fstab file It still requires that you manually mount the
> disk, but you don't need to create the mount point.
>
> Rich

------------------------------------



Richard A. Carlson e-mail:

Network Engineer phone: (734) 352-7043
Internet2 fax: (734) 913-4255
1000 Oakbrook Dr; Suite 300
Ann Arbor, MI 48104



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