it's premature to use that hard drive as a paper-weight  :)
try plugging-in the external drive then execute the command:

shell> fdisk -l


and check if an SDA device is present on the lower end of the
screen. if still present, then perform a file system check on that
device. then mount the device, manually.

iirc, i've experienced the same problem before and i noticed that
the device was only given a different name (sdb instead of sda)
due to an improper unmount.

if the problem persist, try using the HDD internally next time  (kiddin)




On 7/11/06, Allister Levi Sanchez <[EMAIL PROTECTED]> wrote:
Hi Pluggers,

 I have a (rather quirky or obsolete? non-branded) IDE-to-USB converter
connected to my 80GB hard disk so I could use it as external USB HDD.  A
couple of days ago, I was copying several GBs of data to my external drive.
After I have copied the files, I tried to unmount it by right-click -->
Safely Remove (I'm using Kubuntu Dapper LTS).  It wouldn't unmount.  It
sometimes happens to my other USB drives so I thought it was OK to pull the
USB cable anyway.

 Now, when I tried to reconnect the external HDD to access my data, it
wouldn't mount.  I check dmesg and I see something like this:
 [17180236.324000] usb 4-6: new high speed USB device using ehci_hcd and
address 4
 [17180236.456000] scsi2 : SCSI emulation for USB Mass Storage devices
 [17180236.456000] usb-storage: device found at 4
 [17180236.456000] usb-storage: waiting for device to settle before scanning
 [17180247.180000] usb 4-6: USB disconnect, address 4
 [17180247.180000]  2:0:0:0: scsi: Device offlined - not ready after error
recovery
 [17180247.180000] usb-storage: device scan complete

 There was also a message (sorry I forgot to copy it) saying some reiserfs
error code (the filesystem of the external drive is reiserfs).  Could anyone
tell me how I could work around this problem?  Or does it mean I've just
lost my 80GB forever?
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