<html> <head> <style></style></head> <body class='hmmessage'><div dir='ltr'>Steve, <pre>1. I have tried both front and rear usb ports. Both function the same - fails to detect the ext drive. 2. I have tried mount command again. Here is the output. ====================================================== <style type="text/css"> <!-- @page { margin: 0.79in } P { margin-bottom: 0.08i</style></pre>ramesh@mozart:~$ sudo mount /dev/sdc1 /media/mnt [sudo] password for ramesh: mount: special device /dev/sdc1 does not existramesh@mozart:~$ sudo mount -t ext4 /dev/sdc1 /media/mnt mount: special device /dev/sdc1 does not exist========================================= 3. The output from "tail -f /var/log/syslog" is posted at <a href="http://www.kiduvinhouse.net/share/syslog.doc" target="_blank">http://www.kiduvinhouse.net/share/syslog.doc</a> 4. The external drive has only one partition as displayed by Gparted. OS reporting eight partitions is obviously wrong. The "Disk Utilty" that comes with the OS also reports eight partitions - again wrongly. I appreciate your taking time to resolve the issue. Thanks, Ramesh <div>> From: steve@rileyz.net > To: kubuntu-users@lists.ubuntu.com > Subject: Re: External Backup Disk Drive > Date: Tue, 25 Jun 2013 23:18:16 -0700 > > On 2013-06-25 22:43:05 Ramesh Rao <rameshrao55@hotmail.com> wrote: > > > > Steve, does the output from "udevadm monitor" command sent yesterday shed some light, any light? > > udevadm shows that two modules are loading -- usb_storage and uas. It also shows that the drive has eight partitions, but I don't think that's right. Obviously, the drive has visibility problems in the operating system. A little Googling shows many reports of similar problems. Certain troubleshooting steps have worked in some cases, and not at all in others. > > Which USB port have you plugged the cable into? If it's a front port, try a rear port instead. These often have much more power. I'm assuming you have a desktop or tower PC. If you have a laptop, ignore this idea. > > Earlier in the discussion, you include a link (http://www.kiduvinhouse.net/share/ExtSeagateDr.doc) to a document. Here, I see this output: > > ramesh@mozart:/media$ sudo mount /dev/sdc /media/mnt > mount: /dev/sdc is not a valid block device > > It's normal: you can't mount a device like this. Instead, you have to mount a partition. The proper format would be: > > sudo mount /dev/sdc1 /media/mnt > > You might give the above a try, but I doubt anything will happen. > > Another solution mentions listing the file system type in the mount command. Normally, it isn't necessary these days, because mount can detect the file system automatically. What happens if you try it anyway: > > sudo mount -t ext4 /dev/sdc1 /media/mnt > > I'm assuming in the above that you still have EXT4 partition(s) on the drive from your earlier formatting attempt. > > Generally, though, we still can't get the various disk tools to properly detect and report what's going on. I want to see if you're getting the same errors that others have reported. With the drive unplugged, please run: > > tail -f /var/log/syslog > > 10 lines from your syslog will print on the console, and then it will wait. Now plug in the drive. More lines will appear. Please copy-paste those lines into a reply message. > > > > I take it you are a kubuntu kernel/OS person. > > > Nope. I am part of the admin team at Kubuntu Forums, though. > > > ...Steve > > > -- > kubuntu-users mailing list > kubuntu-users@lists.ubuntu.com > Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/kubuntu-users </div> </div></body> </html>