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Old 01-19-2010, 11:18 PM   #1
LaQuirreLL
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usb external harddrive no longer recognised


P4 2.4gHz 3GB Ram opensuse 11.1 kde 3.5.10, 2 internal HDD - 160GB 320 GB, 1 - external HDD [Maxtor II]
Core2Duo 3.0gHz 3GB Ram opensuse 11.0 kde 3.5.9
Acer Aspire One D150 Moblin 2.1

Owner = Considers herself still a newbie with less than a year's experience with linux.

Maxtor II one touch external usb hard drive 250GB- formatted ext3 disk-by-id [used for data storage and transferring data to/from P4 to other computers [C2D & Aspire]
I have never had any problems with linux not seeing this drive [Maxtor II] up until today. I am always very careful about removing this drive [Maxtor II] from any of my computers. It was always automatically recognized by any of the versions of opensuse I have used, even when it was an ntfs format.

Verbatim usb pen drive 4GB vfat [contains Moblin 2.1 Live]
Just purchased this so I could install an os on the Aspire One
Again, no problems with it being recognized by any of the computers/OS.

The problem is that none of the computers 'sees' the Maxtor II any more.
It is usually listed as sdc1 when I do 'mount -ls' in a terminal, but now it doesn't show. If I do 'fdisk -l I get:

linux-zmuf:/home/labud # fdisk -l

Disk /dev/sda: 163.9 GB, 163928604672 bytes
255 heads, 63 sectors/track, 19929 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0009abe9

Device Boot Start End Blocks Id System
/dev/sda1 1 262 2104483+ 82 Linux swap / Solaris
/dev/sda2 * 263 4440 33559785 83 Linux
/dev/sda3 4441 9662 41945715 83 Linux
/dev/sda4 9663 19923 82421482+ 83 Linux

Disk /dev/sdb: 320.0 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000dd9be

Device Boot Start End Blocks Id System
/dev/sdb1 1 38913 312568641 83 Linux

Disk /dev/sdc: 4007 MB, 4007657472 bytes
64 heads, 32 sectors/track, 3822 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Disk identifier: 0x26aae55b

Device Boot Start End Blocks Id System
/dev/sdc1 * 1 754 772096 17 Hidden HPFS/NTFS

Disk /dev/sdc1: 790 MB, 790626304 bytes
64 heads, 32 sectors/track, 754 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Disk identifier: 0x26aae55b

Device Boot Start End Blocks Id System
/dev/sdc1p1 * 1 754 772096 17 Hidden HPFS/NTFS



Where it is showing sdc, that is the USB pendrive and my Maxtor II does not exist, although it is connected. And what is sdc1p1?

I do not know where to begin to correct this problem, have done some googling and have downloaded a disk[Testdisk Live CD] in case I need recovery tools, but don't really know if I need that. There are no entries in /media or fstab or mtab for the Maxtor II anymore. Where do I begin to identify exactly what the problem is? If it makes any difference the lights on the Maxtor II are still flashing when I turn it on. I have tried rebooting to see if the computer would recognize it after a reboot, but it didn't.
Could someone please give me some advice on this problem? Thank You
 
Old 01-19-2010, 11:45 PM   #2
dracuss
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Use "lsusb" and look if it's detected at hardware level. If it is, then I would simply try to format again the entire HDD.
 
Old 01-20-2010, 12:05 AM   #3
jschiwal
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Run "sudo tail -f /var/log/messages" in a terminal, and then plug in the device. I don't see a 250 GB partition in your fdisk -l listing.
The UUID number is from the filesystem, so you won't have it if the filesystem is damaged. You should still see it using fdisk. There may be a drive problem rather than a problem with the filesystem.

I've had an external usb/firewire drive have problems and being recognised as a TI Boot device (whatever that is). I had to power it down and up again until it worked. My guess is a problem with one of the disks inside.
 
Old 01-20-2010, 12:05 PM   #4
LaQuirreLL
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@ dracuss
This is what I get when doing lsusb:


linux-zmuf:/home/labud # lsusb
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 046d:c316 Logitech, Inc. HID-Compliant Keyboard
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 005: ID 04a9:10c8 Canon, Inc.
Bus 002 Device 004: ID 03f0:2305 Hewlett-Packard ScanJet 3970c
Bus 002 Device 003: ID 0409:0058 NEC Corp. HighSpeed Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


@ jschiwal


sudo tail -f /var/log/messages gives me this:

Jan 20 00:43:57 linux-zmuf SuSEfirewall2: Firewall rules successfully set
Jan 20 00:43:57 linux-zmuf kernel: bootsplash: status on console 0 changed to on
Jan 20 00:43:57 linux-zmuf kernel: klogd 1.4.1, ---------- state change ----------
Jan 20 00:44:41 linux-zmuf su: (to root) labud on /dev/pts/1
Jan 20 00:45:35 linux-zmuf gconfd (labud-3411): starting (version 2.22.0), pid 3411 user 'labud'
Jan 20 00:45:36 linux-zmuf gconfd (labud-3411): Resolved address "xml:readonly:/etc/gconf/gconf.xml.mandatory" to a read-only configuration source at position 0
Jan 20 00:45:36 linux-zmuf gconfd (labud-3411): Resolved address "xml:readwrite:/home/labud/.gconf" to a writable configuration source at position 1
Jan 20 00:45:36 linux-zmuf gconfd (labud-3411): Resolved address "xml:readonly:/etc/gconf/gconf.xml.defaults" to a read-only configuration source at position 2
Jan 20 00:45:36 linux-zmuf gconfd (labud-3411): Resolved address "xml:readonly:/etc/gconf/gconf.xml.vendor" to a read-only configuration source at position 3
Jan 20 00:45:36 linux-zmuf gconfd (labud-3411): Resolved address "xml:readonly:/etc/gconf/gconf.xml.schemas" to a read-only configuration source at position 4

and then when I turn on USB external nothing happens - cursor just sits there and nothing else happens.

Does this mean the drive is shot? How do I tell?
And if so, is there a way to recover data from this drive?
And, do you have any suggestions as to what software I could use to do this recovery?
Thank You
 
Old 01-21-2010, 12:52 AM   #5
dracuss
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As much as I understand, your hardware is not seen by the system. At least, I don't see any item called Maxtor, though there is a possibility that it is called otherwise. Look what do other people tell you, and if there is no obvious way to repair your HDD, just throw it to garbage or go to a repair center
 
Old 01-21-2010, 12:57 AM   #6
jschiwal
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First I would try another usb port. Some are better suited for usb-2 then others, especially when it is sharing a root hub with a usb-1 device. My desktop has two usb ports on the bottom rear of the case that are for the keyboard and mouse only.

Also make sure all unnecessary USB devices are unplugged. My old desktop would sometimes have a problem booting up with pendrives being inserted. This was intermittent and occurred before the post phase, but illustrates a hardware related problem on some systems. If I unplugged the pen-drive, the system would boot, and the usb port & device would be usable afterwards.

I would power down the computer and the usb drive. Start up fresh. Use different usb ports. There are potentially other problems besides the hard disk drive in the enclosure. Also try booting up to a live distro and see if the drive is detected.

I don't want you to assume the hard drive is bad, but it is possible.
 
Old 01-21-2010, 12:58 AM   #7
jschiwal
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dracuss: I was writing my response at the same time. It wasn't written in response to your post.
 
Old 01-21-2010, 07:08 AM   #8
LaQuirreLL
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@ jschiwal
First of all thank you for reply.
To date I have tried:
1] Changing USB cables. No difference.
2] Running lshal -m from a terminal.[Other USB devices are recognized as I plug and unplug them, but Maxtor II is NOT. However I am experiencing a problem with downloading pictures from my digital camera that connects by USB cable. I get an error [Unable to Retrieve] but when I try it on another computer, it is OK.
3] Trying other USB ports. I normally use ports on front of box, but it didn't matter which port I used.
4] Trying to connect Maxtor II on my other computers. It was not seen.
5] Running a Live CD [Knoppix and TestDisk]. Maxtor II not detected.

I would be most grateful if you have any other suggestions, as, of course, this is my storage drive and the data on it is important to me.
I realize that just because the light on the drive is flashing that does not mean it is necessarily working, just that there is power getting to drive. It may be my imagination but the light is flashing at double time, where as, when the drive was working ok, it flashed slower. Is there any way to confirm that the drive is actually working,[getting power to disk so it will operate]?
Thank You
 
Old 01-21-2010, 10:29 AM   #9
tuxmarc
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Distribution: Puppy 4.0, Ubuntu 7.04, Mandriva Spring 2008, Open Süse 11, Mandrake 10, Slackware and more
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Hi!
Have you tried to take the disk out of its box and plug it straight in the computer as a slave disk?
Sometimes the electronics inside the box are dead.
 
Old 01-21-2010, 11:01 AM   #10
LaQuirreLL
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@tuxmarc
Beat you to it, but thanks, so much, for responding. I've been doing a lot of googling and the fact that the light [on USB drive] kept flashing made me think, just on a slim chance, that all was not lost. I ran across an article -
http://forums.whirlpool.net.au/forum...m/1010312.html
that mentioned exactly your advice. Tried it out and it worked. Now, I don't have an external USB drive anymore, but have not lost any of my data that was on the hard drive.
Of course, the first thing I did was do a backup of my backup and so now I have 3 [1 - working copy, 2 - backups]

I sure hope that someday this post helps someone else that may be in this same situation.

Until the next time, thank you jschiwal, tuxmarc and dracuss for your encourgement and advice.
 
Old 01-22-2010, 01:51 AM   #11
tuxmarc
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LaQuirell,
You're welcome! We are on this forum to help when we can and get help when we are stuck.
I am glad you have recovered your data.
Now you can try to put the disk in its box again, spraying all contacts with a something for electric and electronic contacts, including the USB socket and see if by chance it is living again.
I have sometimes to do this with parts of my dinosaurs.
Sometimes an internal disk seems dead, clicking all the time, one spray and it is back to life.
If the box is really dead you can buy either another empty case for hard disks or an adapter like the Dexlan USB to IDE/SATA I have. With this one you can connect any type or hard disk, plus CDs and DVDs. It is cheaper than an empty case (22 to 29 euros in Europe) and versatile.

Last edited by tuxmarc; 01-22-2010 at 02:07 AM.
 
Old 01-24-2010, 11:16 AM   #12
LaQuirreLL
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thanks tuxmarc
I have been checking out these USB to IDE/SATA adapters. For a person with a few internal HDD's hanging around,[me] they make much more sense[read as dollars & cents] than going and buying another external HDD. The multi adapter that does 2.5, 3.5 & sata, by SABRENT seems good. [quality & price]
I am going to try to revive the external box, just to see if I can, but I have a smaller [4GB] HDD that I will try it with, because why take a chance on using the HDD that was in the external, when it is a perfectly good 200GB internal drive now.
Well, until we meet again[that would read as "until my next crisis arises" or "When I finally get enough knowledge that I can help someone".

All the Best
 
Old 01-25-2010, 05:06 AM   #13
tuxmarc
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LaQuirell
If your 200 Gb disk is there for saving your data, do not forget that when it is connected in your PC, it is wearing out little by little even if you seldom read and write on it. Hard disks have a long lifespan but one day they are tired of working.
So it would be wiser to unplug it from mains and IDE and you can keep it safely for future backups.
You know when a colleague gave me a nearly modern PC case, I was really a newbie and thanks to numerous sites I have learn little by little what IDE, Sata, PCI, AGP, wifi were.
For sure by experiencing problems you will be a master :-)
Best regards.
 
  


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