Ubuntu :: USB Pen Drive Unreadable - Show Up Like SCSI

May 29, 2010

I try to use a usb pen drive. The usb pen drive show up under computer but not like a drive in geparted. When I look in the log file I find the drive
May 29 10:11:46 CQ60 kernel: [ 112.942602] scsi 6:0:0:0: Direct-Access
USBest USB2FlashStorage 0.00 PQ: 0 ANSI: 2
I do not know what this mean but it looks like the drive show up like a scsi and not usb or? I need a clue to get it work like a normal usb device.

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Fedora Hardware :: External Hard Drive Unreadable - Cannot Show All Files

Aug 14, 2010

When I inset my External Hard drive into my laptop it shows 27.3 gb occupied but doesn't show all the files. Also , this is happening only now.

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Server :: Adding Scsi Device Won't Show Up In Fdisk

Jul 27, 2011

I created a new disk on our scsi san. I then ran the following command: echo "- - -" > /sys/class/scsi_host/host1/scan. did that command for each host. and in dmesg, it shows it found a device /dev/sdg. but when i do a fdisk -l. It never lists /dev/sdg. I just did this other day on another server and it worked fine like that. This is RH 4.8.

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Ubuntu :: Unreadable WD MyBook Terrabyte Drive On 10.04 LTS?

May 8, 2010

I've been using a WD MyBook terrabyte USB drive for several months with no problem. Several days ago, I used the "safely remove drive" option but then unplugged the cable before the removal process had finished.

Now when I plug the drive in, the WD SmartWave section of the drive will mount. This is additional software for Windows computers that came with the drive and that I don't use. The main drive itself, though, will not mount. The drive doesn't show up on the left side of a navigation window, either.

I can see the drive using Disk Utility. It is located at /dev/sbd. (a) mount this drive or (b) recover its data so I can format it? I'd much prefer (a), of course. Regarding my level of tech savvy: I've been using Ubuntu for a couple years, but I chose Ubuntu because it allows me to use Linux while still remaining relatively ignorant about things, which is my comfort zone.

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Hardware :: Unreadable USB Drive - How To Rescue Disk

Mar 8, 2011

I've a LaCie usb drive that seems broken. Not detected by nautilus or gparted, nothing at /dev/sdbX but still doing noise when I plug it. I guess it's an hardware problem but I want to be sure. Do you know some tricks to try to rescue my disk (make a final backup)?

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General :: Data Unreadable On 1 TB Hard Drive?

Jul 19, 2010

I have a Seagate 1TB external USB 2.0 hard disk which contains 740 GB of data. Everytime I connect, it shows the memory occupied and the remaining memory(190GB)..but when i try to access the folders inside they read empty... nothing is seen in the folders.. I am unable to read any data from it or write to it... Same is the case with Windows When I run self-test in Linux ubuntu I get

Reallocated sector count
threshold: 36
Normalized: 61
Worst: 61
value: 6488

Current pending sector count:

threshold: 0
worst: 1

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Ubuntu Installation :: Hard Drive Messed Up After Installing 10.10 - Unreadable Or Its Not Detected ?

Dec 26, 2010

I installed Ubuntu 10.10 onto my laptop and got a new plug and play device that wasnt being read so I went to go and install windows onto my laptop and when I get to the screen to select my partition it says its unreadable or its not detected but when I restart it it works fine in loading ubuntu.

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Server :: Error SCSI Controller Was Reset Due To SCSI BUS Noise Or An Invalid Signal?

Feb 15, 2010

i m facing same error in most of the HCL servers. the problem is that it throws error while booting and sometimes not throws error. the error is :-

Feb 13 13:17:25 fe13s kernel: Adapter 0: Bus A: The SCSI controller was reset due to SCSI BUS noise or an invalid signal. Check cables, termination, termpower, LVDS operation, etc.

Feb 13 13:17:30 fe13s kernel: Adapter 0: Bus B: The SCSI controller successfully recovered from a SCSI BUS issue. The issue may still be present on the BUS. Check cables, termination, termpower, LVDS operation, etc

Feb 13 13:29:15 fe13s kernel: Adapter 0: Bus B: The SCSI controller successfully recovered from a SCSI BUS issue. The issue may still be present on the BUS. Check cables, termination, termpower, LVDS operation, etc

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Red Hat :: Mapping /proc/scsi/scsi Entries With Respective Device Names In /dev/ Directory

Apr 11, 2011

In my understanding, the way /proc/scsi/scsi gets populated, /proc/paritions also gets populated in the same fashion. i.e. the description for first entry of /proc/scsi/scsi can be seen in the first entry of /proc/partitions and same for rest.

So, With this assumption, in my project, I used to relate first entry of /proc/scsi/scsi with first entry of /proc/partitions to get its total size and same for all entries.

But, I observed some differences in following scenario, where

1) The first 4 entries in /proc/scsi/scsi are SAN luns attached to my system and for which the actual device names in /dev/ are sda,sdb,sdc and sdd.

2) The last 4 entries are the internal HDDs on same system. In /dev/, their respective device names are sde,sdf,sdg & sdh.

(Output attached at end of the thread)

But in /proc/partitions, the device order is different.

You can see their respective sizes in /proc/partition output as well.

So, my question is, in this particular scenario, I can't relate the first entry of /proc/scsi/scsi with first entry of /proc/partition. i.e. scsi0:00:00:00 is not /dev/sde, because it is actually /dev/sda.

It seems that my assumption is wrong in this scenario.

Is there any way or mechanism to figure out actual device name for an entry in /proc/scsi/scsi in /dev/ directory?

How can my application should relate /proc/scsi/scsi entries with their respective device names and sizes?

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Debian :: SQUEEZE - Cat - /proc/scsi/scsi - No Such File Or Directory?

May 4, 2010

When I enter "cat /proc/scsi/scsi" I'm returned with "cat: /proc/scsi/scsi: No such file or directory". I've tried this on two different installs on two different machines.

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Fedora Hardware :: New Hard Drive - Disk Unreadable Errors

Dec 16, 2010

I had a set of rather unusual problems on installing a new 500Gb hard drive on my F14 system, I've solved them, but they were that unusual that I thought I should share them in case anyone else gets the same thing! I'd been experiencing intermittent faults on one of my drives, (lock ups for no reason, occasional boot ups that failed due to ' disk unreadable errors' and other odd errors). I assumed that the drive was failing, but it always showed 'Heathy' on disk utility! This was the disk with the OS on, plus my main 'data' disk had some bad sectors, so I thought I'd buy a nice big 500Gb and reinstall the whole system.

I backed up all my data to an external 'USB' drive, opened the case, (a big old under the table 'desktop', why do they still call them 'desktops'?) shoved in the new SATA drive and rebooted, intending to format the new drive to EXT4 and partitioning it before installing F14 again! OOOOOOOOOW! Major drive failure, missing OS, whole list of SDB errors! Control D, to reboot, BIOS only sees one drive; SDA (I have three, two IDE and one SATA) plus the one I just put in makes four. I go into BIOS and discover that it not only cant see any of the other drives, but my two DVD drives are missing too!

Now I've been building my own systems and mucking about with computers since before you could buy them, and Ive never seen a problem like this one! At first I thought the new drive had screwed my system, for on removal, the problem persisted! Then I noticed that the IDE connector in drive SDB, (the long 40 pin job) was just slightly out of line with the back of the drive, pushed it firmly in and what do you know, everything works! We moved recently and I think the vibration was enough to loosen the connector to give intermittent faults, and pulling the cables about to get the new drive in, pulled it out further......

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CentOS 5 Hardware :: Scsi Drive Not Recognized?

Feb 21, 2009

I just installed centos 5 on a hp dl380 server and it has 2 72.8 scsi gig hard drives. The problem I am having is that only one hard drive is being recognized and it is not being recognized as a scsi. This is what I get from fdisk -l

Disk /dev/cciss/c0d0: 72.8 GB, 72833679360 bytes
255 heads, 63 sectors/track, 8854 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/cciss/c0d0p1 * 1 13 104391 83 Linux
/dev/cciss/c0d0p2 14 8854 71015332+ 8e Linux LVM

as you can see, the system doesn't even see the second hard drive. How do I get both hard drives to be seen and how do I get them to be recognized as scsi?

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General :: Non-root Access To /proc/scsi/scsi

Jun 23, 2011

Some of our workstations have LTO's attached and they seem to drop off every now and again, the only thing which picks them up again (besides a reboot) is the famous rescan-scsi-bus script from here

The thing is that I'd like non-root users to be able to run this script, which in turn needs root to /proc/scsi/scsi

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Fedora Hardware :: Reading Old SCSI SCO Unix Drive?

May 17, 2011

I need to read some data from a hdd that belongs to an old SCO Unix system. The SCSI card is PCI so I unplugged it from the old SCO unix box and stuck it in a new computer and booted using a Fedora 14 USB pen drive. The SCSI card was recognized and so was the hdd but it was not mounted. I then went into Applications, Disk Utility, and found the hdd. Under 'Edit Partition' the type was blank. I was tempted to set it to 'Extended' but was not sure whether that could damage the data on the disk. Does anyone know whether I would be able to read this Hdd by setting the type to 'Extended'?

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Hardware :: HP 306637-004 Drive Scsi Jumper Settings?

Oct 18, 2010

I have just purchased (AT ENORMOUS EXPENSE) a used 306637-004 36 GB hard drive. It has come, by default, with no jumpers and my scsi controller recognizes it as SCSI device 0.Very inconvenient as it clashes with my existing IBM 9GB drive I am loth to play about with.Does any kind person out there know how to jumper this drive to be SCSI ID 1 or 2 (say).

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OpenSUSE Hardware :: Installation Of SUSE 11.2 On A New SCSI Hard Drive?

Jan 22, 2010

I did an installation of SUSE 11.2 on a new SCSI hard drive. Keeping the old hard drive separate. I remembered there was some info on the old hard drive I wanted.

I added this to the system and mounted a partition. I then copied the data over. Then I umounted the partition rebooted the machine and removed the hard drive. However the machine will now not boot without this hard drive even though its not mounted. Not sure what the error message im given means I think it could be trying to fchk it.Do I need to do something more like remove /dev/sdd ?

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Server :: RAID5 Refuses To Start After Yanking Drive From SCSI Bus

Mar 23, 2010

I am setting up a new server and am in the midst of testing RAID. This is an Ubuntu 9.10 server. RAID1 (/dev/md1) is spread across 12 one-terabyte SCSI disks (/dev/sdi through /dev/sdt). It has four spares configured, each of which are also one-terabyte SCSI drives (/dev/sdu through /dev/sdx). I have been following the instructions on the Linux RAID Wiki ([URL]....

I have already tested the RAID successfully by using mdadm to set a drive faulty. Automatic failover to spare and reconstruction worked like a champ. I am now testing "Force fail by hardware". Specifically, I am following the advice, "Take the system down, unplug the disk, and boot it up again." Well, I did that, and the RAID fails to start. It outright refuses to start. It doesn't seem to notice that a drive is missing. Notably, all the drive letters shift up to fill in the space left by removing a drive. The test I did was to:


Is removing a disk from the bus a reasonable test in the first place? Meaning, is this likely to happen in a production environment by other means than a human coming by and yanking out the drive? Meaning, is there a hardware failure that would replicate this event? Because, if so, then I don't know how to recover from it.

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Server :: Removed Fibre Scsi Drive Shows Even After Reboot?

Apr 30, 2010

I am running fedora 8 on a Dell 2950 with a qlogic fibre channel card.is attached to a Dell/clarion AX100.I had a drive assigned to this server which had been working for approximately a year now.Recently during a power failure things turned ugly. Rebooting didn't fix things.I unassigned/reassigned the drive, rebooted, still no good.Funny thing when I unassigned the drive and reboot the system.still see /dev/sdb but no partitions and fdisk -l does not display /dev/sdb.I even did "echo 1 > /sys/block/sdb/device/delete"
and the device no longer showed in /dev, but after a reboot it is back.I pulled and reseated the fibre card, same

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Hardware :: Adaptec 39160 Scsi Fails To Detect Seagate Drive

Dec 4, 2010

just bought an adaptec 39160 PCI scsi controller and 34Gb drive and installed it on my computer.When i Booted it up a utility thing ran which said 'detecting array' and it found the drive and its size etc. it didn't go any further to allow my system to boot, so I rebooted and pressed CTRL + A to enter the adaptec scsi config. I changed something in there to make the disk non bootable (i Think) and rebooted the system.

It now hangs at :

'Detecting Array .....'

and does not show the drive details or the CTRL + A option to enter the utilities. So the only option I have had is to remove the adaptec controller ( and the system boots fine) the mother board is an Abit an8 ultra - probably about 4 years old and cpu is amd 64 I guess i have broken it and my remedy would be to reset the default options on the adaptec controller, but you can probably guess I have v. limited knowledge and have not used scsi before.

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Software :: OS Install Via Pxe - No USB Boot Option And A Broken Scsi Cdrom Drive

Aug 12, 2010

I have successfully setup a FOG server to image my Windows clients, so I have tftp, pxe and anything else related to booting to a pxe server setup and rocking. What I'm trying to do now, is use the CentOS net install files to setup CentOS on an old server with no USB boot option, and a broken scsi cdrom drive (it's a Dell PowerEdge 2400, with a single PIII 733 and 1.25GB ram).

Using the FOG Projects gparted wiki entry (adding gparted to the pxe boot menu) I was actually successfully able to pull the net install files over to the PE, and install CentOS 5.5 via local ftp server. At first it kept erroring out (I kept picking and choosing individual packages from the package groups), so I thought it may be an issue with the GUI install (the python script kept spitting back errors forcing a reboot). In any case, I finally got through the GUI install, but now I need / want to know how to force a text mode install.


the bolded "append" line is where I thought I could force the text mode install script, but that didn't work. The vmlinuz and initrd.img files were both pulled form the net install iso, NOT the livecd. Would that have made a difference? If not, what / where / how should I force the text mode install script?

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Hardware :: SCSI Device Does Not Exist After Connecting Buslink 80GB Usb 1.1 Hard Drive

Jan 25, 2010

After connecting, dmesg shows:


After that, there are no /dev/sd* entries. the hard drive works as expected on my windows box. how can i mount this drive?

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CentOS 5 Hardware :: Support HP EH854A LTO4 External SCSI Tape Drive?

Mar 24, 2010

Does CentOS 5 support HP EH854A LTO4 External SCSI tape drive?

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Red Hat / Fedora :: Reformatting External Drive - Error "drive Doesn't Show Up At All Via Df -k"

Apr 15, 2011

I need to re-format an external drive. All the instructions I have found start with figuring out where the drive is mounted (sda, hda, etc.). However, as soon as my RH Linux machine sees the drive's format (ntfs) it decides it won't even mount it in the first place. Gives me an error message. Also, the drive doesn't show up at all via "df -k". how to convince RHL to be a little more accepting?

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Ubuntu :: Won't Show The Drive On Which It Is Installed

Sep 8, 2010

okay so i installed Ubuntu using wubi on my Windows 7 laptop

i installed Ubuntu on D: drive of my laptop now when i run Ubuntu, it shows only C: drive and not the D: drive on which i have installed it

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Ubuntu :: Wont Show USB Flash Drive

Dec 30, 2010

I really need to put my files onto this flash drive. Its brand new, but for some reason when I put it into my computer it doesn't detect it. I'm freaking out right now. The USB i have is a PNY USB Flash Drive Attache

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Ubuntu :: My 1tb External USB Hard Drive Won't Show?

Mar 10, 2011

I have been trying to get my 1tb External USB Hard Drive; WD External HD1021; but although I can see it in "Disk Utility" it does not appear on my Desktop as it used to and as it holds many family photographs and almost all of my music collection, some 150gb I am a little concerned. I am using Ubuntu Meerkat on my Toshiba Laptop.

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Ubuntu :: Mounted Hard Drive Won't Show Up After Reboot

May 8, 2010

I just got ubuntu installed for the first time, I tried mounting my hard drive to my desktop so i can have easy access to it, but when i restart ubuntu it always dissapears and i have to go to places then click on the hard drive again to mount it to my desktop.

Is there a way of keeping this on the desktop without having to do this all the time? I have the latest ubuntu version.

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Ubuntu Installation :: SSD Drive Not Detected - Zero Drives Show Up

May 15, 2010

I can't finish installing Ubuntu 10.04. I have a Corsair Nova 128 GB solid state drive, the 128 GB model of this series, to be precise. I have an ASUS P5N-T Deluxe motherboard. It has a six xSATA 3 Gb/s ports NVIDIA MediaShield RAID controlelr on it. In Disk Utility, it shows up as nVidia Corporation MCP55 SATA Controller, using the sata_nv driver. I have the 128 GB drive plugged into one of these ports. I have disabled RAID completely in the BIOS.

When I boot the Live CD and run GParted, the drive shows up fine. I've got a 70.81 GiB NTFS partition (Windows 7), a 4.00 GiB swap partition, and a 44.43 GiB ext4 partition, onto which I had planned to install Ubuntu 10.04. I created the swap and ext4 partitions earlier, but at one point, that was unpartitioned space.

The problem is that when I run the Install app to install Ubuntu 10.04 on my SSD, when I get to step 4 of 8 (Prepare partitions), exactly zero drives show up. A while ago, I had a couple of Seagate 1.5 TB mirrored drives plugged into two of the ports, and they showed up fine, but no 128 GB SSD. In trying to troubleshoot this problem, I unplugged those and just left the SSD, and zero drives showed up. I disabled RAID in the BIOS, and it still doesn't show up. I moved the SSD from the port it was plugged into and plugged it into one of the ports that one of the 1.5 TB drives was plugged into. It still doesn't show up.

Nuts and bolts of it: Seagate 1.5 TB drive plugged into port: no problem. Corsair Nova 128 GB SSD plugged into port: doesn't show up. But again, only in the Install utility. In Disk Utility under SATA Host Adapter/MCP55 SATA Controller, I see 128 GB Solid-State Disk/ATA Corsair CSSD-V128GB2 listed plain as day. In GParted, I see a 119.24 GiB /dev/sda device with the partitions I've created on it plain as day. I can pull up a terminal and mount /dev/sda3 /mnt/ssd without any problem and access files on it. But for whatever reasons, the Install program and only the Install program can't see it. I'm dead in the water. Obviously, I can't use Ubuntu if I can't install it. What can I do to get this disk drive detected?


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Ubuntu Installation :: Sata B Drive Not Appearing / Show That?

Oct 5, 2010

Install of 10.4 64 bit not showing choice of sata drives on install. W 7 on sata a drive, SUSE 11 on sata b drive. Need to load Ubuntu 10.4 on drive b, but not given choice of drives on the install. Only "clear drive" listed on the install window.
This is not the case on 32 bit, a graph with drives listed. W7 a runs Adobe CS5, the Ubuntu 10.4 has excellent font, type display on the live cd.

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Ubuntu :: DVD Drive Is Not Recognised - Doesn't Show Up In The File Manager

Feb 21, 2011

A little while ago I installed lubuntu 10.04 on a partition on my (somewhat) old sony vaio desktop. It's great, I do love it - only problem is that the DVD drive is not recognised - at least it doesn't show up in the file manager, and isn't listed when I do "ls -l /media".

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