Hardware :: DVD-RW Drive Not Reading Discs?

Apr 22, 2011

Installed Ubuntu 10.10 this morning from CD, downloaded all the latest updates. But when I put a CD or DVD in the drive, I can't access any of the data. Disk utility recognises that the drive is there, but it says "No medium detected".

Disk utility recognises it at /dev/sr0 so I added a line to fstab

/dev/sr0 /mnt/dvd udf,iso9660 user,noauto,exec 0 0

but made no difference

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Debian Hardware :: The Drive Isn't Reading Discs?

Jan 28, 2010

The drive isn't reading discs. Dmesg says PIO255(auto-tune) requested, PIO4 selected, UDMA33MHz.

An inexpensive drive with many failures noted on Google.

What command would I enter in grub following "ro quiet" to change the mode?

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Ubuntu :: DVD Drive Won't Mount Or Load Discs?

Mar 6, 2010

unable to mount cdrom0 mount: special device /dev/scd0 does not exist

I know the drive is hooked up via SATA.

It has worked before, and I have no idea why it isn;t working now. And I have made no BIOS changes since it worked once. The only change is I installed the newest kernal, that I can think of.

I ran accross someone asking someone with a similar problem to run:

ls /dev | grep cd

so I did and I get: andrew@andrew-desktop:~$ ls /dev | grep cd pktcdvd

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Feb 22, 2010

seen this or have suggestions on how to fix this. I can read the original disks but I cannot read the backup. The backup disc was burned on Window$ using Nero.I am trying to read the disc using both VLC and Totem but you can see in /var/log/messages there is an issue with reading the disc. This disc is readable in the Window$ box and on all DVD stand alone players.

Feb 21 20:17:09 delltop kernel: [40761.304725] sr 0:0:1:0: [sr0] Unhandled sense code
Feb 21 20:17:09 delltop kernel: [40761.304752] sr 0:0:1:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE

[code]...

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May 31, 2010

I'm having trouble with my optical drive (an LG GH22NP20).I can read a data DVD, but when I put in a standard audio CD it does not recognize it.I hear it spinning around in there, but if I check /media/ there are no files listed.?

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Sep 28, 2009

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Feb 1, 2010

I've installed libfuse2 and ntfs-3g. Now when I reboot, the drive shows up in fdisk. In Gnome File system, the folder shows up in /media as /media/Storage. I didn't issue the mount command, it went there automatically. In terminal, I can access Storage and read/write to files on it. BUT, if I double-click the folder in Gnome, I get a brief glimpse of all the folders in Storage, then they disappear and the drive unmounts. The desktop icon goes away, and I can't see it when I issue sudo fdisk -l. I can get it back with a reboot. I've tried an entry in /etc/fstab, but that makes no difference. I didn't find anything specific to address this on this forum or after Googling.

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May 2, 2015

I have a server set up with Samba. On the desktop side I use KDE. I can clearly track intensive smbd activity, being the first on the iotop results page. Another thing is that after reading from the server's HDD, it seems to write on the desktop's SSD. It does this intermittently.I really want to know how can I stop this. It's very annoying and I bet I don't need it since, using previous versions of Debian, I could go well without this activity.

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Sep 11, 2010

I'm running badblocks on some new disk drives just to be safe before my return period expires. I'm running the command

Code: sudo badblocks -b 4096 -p 4 -c 65536 -w -s /dev/sdb1 on an empty partition taking up the entire device. I am getting the following output:

[Code]...

1) When it gets to the "reading and comparing" phase, it seems to complete in <1s. I see other posts where people say this takes them as long as it took to write to the drive. I don't see any mention of this being quick, so I'm just afraid that badblocks is being denied read access or something.. Anyone familiar with this behaviour?

2) Obviously since it is on a sixth pass, badblocks thought that it found new bad blocks on the second pass (or later). When I check SMART, though, the drive has not re-allocated anything (despite having plenty of spares)... Doesn't this seem odd? Is there some reason why the disk would not step in upon a write fail? In fact, I thought a write fail should be transparent... Which makes me wonder if question 1 (above) is causing this...

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Jun 22, 2009

I just downloaded the Fedora11 LiveCD and booted it......it boots, but when it starts to load KDE, it takes a very long time, and it never ends. It just keeps on reading from the CD-ROM drive. I can see the GUI is loading, but the loading time is so long that the mouse sometimes freezes. My Config is 512MB of RAM and 2 IDE Hard Disks. Also note that I verified the image with SHA256, and even burnt the CD at two different speeds, one at 48X and the other at 16X. Still nothing. There has also been severe kernel panics on EXT4.

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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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Oct 30, 2010

I decided to install Maverick on another PC in the house. I downloaded and burnt the 10:10 live CD three weeks ago and installed it on my laptop without problem.

Now when try to install on this it read the CD as first boot device, goes to the language selection, and then the "try without installing/Install/check disk" etc. I select either "install" or "try without installing" and after s few seconds the drive spins down and thats it...nothing more happens.

I know the CD's fine as I already installed with it and the PC in question currently has a working version of Karmic on it. PC is an Acer L100 and the CD is the 32 bit version.

Update: After posting this I've played around a bit more. It seems most attempts it doesnt want to read the Live CD at all. After trying to boot from it and displaying the copyright line "isolinux..." it jump straight GRUB and boots my present OS. I've just tried the Karmic CD too and the same thing is happening. So maybe points to a problem with the CD drive??

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Jun 28, 2011

I wish to read the Manufacturer data and other details such as Device ID, Serial number on a USB drive.

1. Could anyone help me out with information on the memory structure of a USB drive? (which location is the mnfr data stored?)

2. Are there are any commands in Linux that will help in reading/accessing this data?

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Mar 18, 2010

I wanted to check the first sector of my USB stick, and so I issued:dd -if=/dev/sda -bs=1024 -count=1It showed me all the weird characters from the data, then after it executed my bash prompt became corrupted with the same kind of characters! Also, everything I typed was like that. (see the picture)Luckly, it was just that tty that became like that.How can I fix the fonts after something like that happens, and how to prevent it from happening whenever I use dd again?

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Jun 12, 2010

I inserted a disc and tried to access it through Dolphin. It shows up in the directory explorer thing as a disc and with the disc name, but it has a little / thing in the bottom corner of the icon, and when I try to access it, it gives me this long error on the bottom of the file area (can't remember what all it said, something about 'harvey' and being unable to find the directory in /etc/fstab). The same thing happened with an external drive, which seemed to work fine before but now has the same problem.

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Jan 12, 2010

Earlier tonight my computer froze when I was moving some folders on an external hard drive (ntfs) and I had to manually shut down. Now nautilus crashes whenever I try to access the drive, although if I open nautilus as root it works fine.

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Feb 25, 2010

I just replaced a DVD-RAM drive in one HP server, The drive is recognized by the OS:

Code:
# lshw -class disk
*-cdrom UNCLAIMED
description: SCSI CD-ROM
product: DVDRAM GSA-T50L

[Code]...

Is there anything I should do when replacing a drive? Didnt think so, but this is going nowhere.

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Dec 12, 2009

I got an ISO from a friend and it's been sitting ontop of my desktop for ages now, and I'm not able to burn it because for some reason, Ubuntu has stopped reading any CDs in my drive.

G.B. on burning it:
Code: scsidev: '/dev/sr1'
devname: '/dev/sr1'
scsibus: -2 target: -2 lun: -2
Linux sg driver version: 3.5.27
Wodim version: 1.1.9
code....

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Feb 25, 2010

I just replaced a DVD-RAM drive in one HP server running CentOS5 (2.6.18-164.11.1.el5PAE #1 SMP )

The drive is recognized by the OS:

# lshw -class disk
*-cdrom UNCLAIMED
description: SCSI CD-ROM
product: DVDRAM GSA-T50L

[Code].....

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Jun 23, 2011

I have been backing up onto a 60G ext2/3/4 partition on a 1TB external USB hard disk for a year or so now and have built up a few folders of .thunderbird, .mozilla, and other assorted files - using this as my standard "backup system" - but suddenly all the files and folders in this partition seem to have disappeared.

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I ran a freeware utility called DiskInternals Linux-Recovery from winDoze which, after half an hour, came up with a list showing all the folders and files in the partition. It said that they would be written back onto the hard drive that they were "retrieved" from - but no change happened - still no contents showing when booting up in any linux.

Running a clean install of FedoraCore14 on an AMDAthlonx2 5000 (= 2.6G true) on an ASUS M2N-MX SE PLUS m/b with 2G of RAM

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May 4, 2011

I don't understand the results of a simple performance test I ran using two basic scripts (running on a high end server):

perfVar.zsh :

#!/bin/zsh -f
MYVAR=`cat $1`
for i in {1..10}

[code]...

Performance test result:

> time ./perfVar.zsh BigTextFile > /dev/null
./perfVar.zsh FE > /dev/null 6.86s user 0.32s system 100% cpu 7.177 total
> time ./perfCat.zsh BigTextFile > /dev/null
./perfCat.zsh FE > /dev/null 0.01s user 0.10s system 91% cpu 0.118 total

I would have thought that accessing a VARIABLE was way faster than reading a FILE on the file system... Why this result ?Is there a way to optimize the perfCat.zsh script by reducing the number of accesses to the file system ?

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May 20, 2010

i installed kernel 2.6.34 to fix my lid closing issue, and that went great. but now when i go to reinstall my broadcom i get this error. Code: Reading package lists... Done Building dependency tree Reading state information... Done bcmwl-kernel-source is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded. 1 not fully installed or removed. After this operation, 0B of additional disk space will be used. Setting up bcmwl-kernel-source (5.60.48.36+bdcom-0ubuntu3) ... Removing old bcmwl-5.60.48.36+bdcom DKMS files...

[Code].....

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Mar 30, 2010

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Dec 9, 2010

I have several old poweredge 2450 servers I bought recently, used. I have made several Ubuntu 8.04 or 8.04.4 server cds. They all hang on the packages.gz file trying to install. I used the check disc function on the 2450s and it can't read the file, it thinks it is corrupt, though it works fine on a more modern computer.have tried several similar computers. I have burned to CD-R and CD-RW. I have burned at 8x (slowest on my drive).I have checked the MD5. I just don't understand why these computers won't read this disc properly. Or several other discs, like SMS server or tiny core. Won't read them either. Oh, but it reads Ubuntu 10.10 server just fine, installs ok, well slowly, but it works.

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Apr 12, 2011

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Jun 7, 2011

I am trying to install various software on my new laptop with 11.04, the problem is some software has 2 or more disks.

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Jul 1, 2010

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May 20, 2010

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May 26, 2011

I haven't used linux in a long time, and have to install OpenSUSE 11.3 on ten of our servers. What I plan to do is install OpenSUSE and all our required software on one of the servers, and then clone that drive to all the other server drives (the servers are hot swappable). My question is:

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We have a 2U file server running windows. All of the servers (1 x Win and 10 x linux) will be connected to a 24 port gigabit switch.

Is there also any special stuff I need to do to allow access to the Windows server (file etc)?

I will also require remote access to the servers, but assume that this will be easy to setup?

As for sleep mode, I assume that's fairly easy to configure through the interface?

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Jan 6, 2010

I am fairly new to ubuntu and linux in general but have bee experimenting for a little while. As part of that experimentation I ended up with a set of fedora 11 install cd's except for disc 4 which had a faulty image.The fedora cd's have some programs that may be handy in setting up a server. This prompts my thoughts to turn to getting the programs off the fedora cd's and installing them on ubuntu.Both are a gnome desktop environment, and there are a whole heap of files with names that look to me like files for part of a serious installation.

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