Debian :: Slow Read/write On External Storage Devices Connected Via USB

Mar 29, 2010

I am running Lenny. USB storage devices are painfully slow, if the data to be copied is above 4GB it works on transferring for more than half an hour and then comes up with an error dialog(saying something like file size is too big). The problem exists in both read and write.

I did google a bit and here is the output of lsmod | grep hci
ehci_hcd28428 0
uhci_hcd18672 0
usbcore118192 4 usb_storage,ehci_hcd,uhci_hcd

[Code].....

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Ubuntu Servers :: Mainboard And Storage System - How Both Storage Devices Will Be Supported By Debian

Mar 11, 2011

I'm interested in buying a new hardware for my company. The old server (now 10 years old) should be replaced with a new one. Till now, I was looking on different hardware suppliers, boards and different other places. I found a Tyan board [URL]. The hardware spec is quite interesting and the board would fullfill our claims.

how both storage devices will be supported by Ubuntu or Debian??

- SATA-Controller: AMD SP5100
- SAS-Controller: LSI 1068E

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Fedora Hardware :: USB Storage Devices Slow To Mount

Jun 22, 2011

Using Fedora 15 64 bit. The problem is when I put in a USB stick (directly into USB port front or back), or SD memory card via Card reader, they take a long time to auto mount. About 30 seconds. I've tried a few different USB sticks and memory cards. Once mounted they work fine. This is a new install, been running for a few weeks, but the problem only seems to have started in the last few days. Also, not sure if it's related, but now Shotwell takes about 30 seconds to start. The screen comes up, but the interface in non responsive for around 30 seconds. Both USB and Shotwell problems seem to have started at the same time.

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Ubuntu :: Opening Files From External Storage Devices From Within Applications?

May 3, 2010

Running various applications, including Open Office, I need to open files from my external hard drive, from within said application itself. But the file menus for all my applications list only the files of my primary hard drive, and I can't look at other drives. Surely there must be some way to do this.

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Ubuntu :: External Storage Drive Appears Connected Whilst Removed?

Jul 21, 2011

I have properly ejected a USB memory stick and removed it from the port, but it remains in my 'Places', on the side pane of Nautilus. The /media directory is empty.

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General :: Working Of Read & Write Request To Mass Storage

Jan 18, 2011

How does the read & write request from a command prompt go to usb & retrieve the file ? When a read request is given , I/O manger sends the request to file system manager (FSM) and from FSM to mass storage device drivver and from there to mass storage , is this right in Linux ?

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Ubuntu :: USB Read / Write Speed Unbelievably Slow

Apr 14, 2011

I started a thread in the hardware section, but I've narrowed it down to being a software issue. The problem is that all USB devices are written to at about 1MB/s, and is read at equally slow speeds. After testing my computer on an older Ubuntu release (8.04 32bit), I verified it wasn't a hardware issue, because the read and write speeds were like they were supposed to be. Then, I downloaded the 32bit release of the Ubuntu version I'm currently using (an up-to-date version of Natty) and booted the live cd of it. It was equally slow there as well.

The read/write speeds are equally poor on openSUSE and Arch Linux, so I don't think that it's an issue with Ubuntu, as much as it seems like a kernel issue (or maybe not, you guys can correct me if it seems like it isn't ).

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General :: Storage - Mount "locked" SD Card As Read-write In GNU

Feb 9, 2010

My Canon PowerShot A470 + CHDK can write to SD-cards that are "locked" (the lock switch is used to make the card bootable), but GNU/Linux

`/dev/mmcblk1': Read-only file system

(I'm using "Texas Instrument 5-in-1 Multimedia Card Reader")

So I have to switch that switch on and off again and again. ("unlocked" to write to the card in Linux, "locked" to boot the camera from it).

How to force locked card to be writable in GNU/Linux?

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CentOS 5 Hardware :: Slow Read / Write Operations On 5.5 And ESXi 4.1

May 22, 2011

I have a problem with speed of read/write operations (3Mb/s max)

Hardware - HP DL160.
CentOS 5.5 working on VMWare ESXi4.1.
R/W operations on CentOS 5.5 without ESXi - 60Mb/s

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Ubuntu :: Anyway Can Get Normal Users To Just Read And Write To External Hdd's?

Nov 28, 2010

I have shared two external harddrives via samba on ubuntu, but only I can access it. The reason being is because I have logged into linux, and become the owner of the external hdd's. On the permission properties, I can see that the group I have created every other user under has "No Folder Access", and if I change this it reverts back instantly. So frustrating, I've tried to chmod it which hasn't done a thing. The owner of the external hdd's seems to be the only person who can access it over samba.Is there anyway I can get normal users to just read and write to external hdd's?

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Debian Programming :: Disable All USB Storage - Enable Some Devices By Vendor ID

Jun 18, 2014

I want to disable mounting usb storage devices except some devices based on its vendor id. I tried by adding below udev rule in debian wheezy

Code: Select allACTION=="add", SUBSYSTEMS=="usb", RUN+="/bin/sh -c 'for host in /sys/bus/usb/devices/usb*; do echo 0 > $host/authorized_default; done'"
ACTION=="add", ATTR{idVendor}=="054c", RUN+="/bin/sh -c 'echo 1 >/sys$DEVPATH/authorized'"

But it disabled all usb devices(USB keyboard and mouse). How can I allow other devices except storage devices.

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CentOS 5 Server :: RAID0 - Getting Extremely Slow Read / Write Speed

Jun 28, 2010

I am new to Centos and linux in general. I have just got myself a Dell 1950 server with 2x 1T SATA2 hard disks in it. now the server comes with a PERC5i Raid card with 512Mb. Well I put these in raid 0 and the raid card initilzed the disks to 128 writeback and read ahead. When I loaded centos it did not recognize the dell layout so therefore wanted to initalize it again, so I done this as it wanted. Now I created a 80gb boot and o/s partition and a 100gb swap the rest was created into LVM space to run solus vmwear. But I found the raid 0 to be getting extreamly slow read and write speeds.

Example same disks
Desktop PC max 214mb/s windows vista 64
Server with centos 104mb/s

Now I am not sure but I am told that I need to align the o/s with the raid card settings but I have no idea how to do this. How to do this in plain easy step by step instructions. I mean how to calculate it, how to format the disk this way, and what files to edit where if needed. I have spent hours trying to figure out why my raid 0 is slower than a single disk.

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OpenSUSE Hardware :: Finding A External USB CD/DVD Read/write Device?

Jul 30, 2011

My wife is purchasing a netbook with no internal CD/DVD writing device, so we plan to purchase an external CD/DVD USB-2.0 read/write device. Our local PC shop has the following 3 external USB-2.0 DVD read/write devices:

(a) Samsung DVD-Burner SE-S084F/RSBS [not listed on Samsung site - too old ? ]

(b) LG DVD-Burner GE24NU21 USB2.0 [not listed on LG site - too old ? ]

(c) Super-Multi Portable DVD Rewrite (GP10 Lite USB2.0 Slimline) GP10NB20 (mentions Mac OS/X support, which is encouraging)

None of those are listed in the openSUSE HCL. Has anyone successfully used any of these with GNU/Linux (my google surfing on this revealed no GNU/Linux complaint nor any success stories) ? Or is there another such external USB-2.0 read/write DVD burner device that is recommended ?

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General :: Won't Let Mount An External Hard Drive As Read/write

Oct 7, 2010

I try

mount -t ntfs -o rw /dev/sdb1 /mnt/exthdd

it doesn't give me any response so I presume it succeeded but when I try to touch it, it tells me it's a read-only file system

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Software :: Setting Read / Write Permissions For External Drive?

Mar 31, 2010

I am using sun micro system. We have installed fedora in that. I want to know how to give R/W permission to a external hdd...

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Ubuntu :: Very Slow Write Speeds To USB External Hard Drive?

Oct 11, 2010

I'm trying to back up my hard drive to a 2 TB WD external so that I can do a clean install of 10.10, however I'm getting tremendously slow write speeds. It hovers around 1.5 MB/s and steadily slows from there. It tells me it will take 150+ hours to transfer 400 GB of data.

I have a AMD quad core processor and 8 gigs of ddr3 ram... USB 2.0... I feel this should go much faster.

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CentOS 5 :: Install The Reiserfs Drivers To Read / Write To External Drive?

Jul 20, 2009

I am trying to install the reiserfs drivers to read/write to my external drive. But keep getting command not found. Although the system can get man pages for modprobe.

modprobe reiserfs
bash: modprobe: command not found

I also need to know how to add myself to the sudoers file. I have already tried visudo but this has not worked.

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Debian Hardware :: Failed To Assign Any Connected Display Devices

Jun 8, 2015

Had this strange issue ....

Steps
a. Working Gnome desktop with NVidia proprietary drivers in Jessie.
b. Something happened (see below)
c. Still working Gnome desktop with NVidia proprietary drivers in Jessie.
d. Reboot
e. Boot up in low res -can see the terminal messages but no X/ Gnome Desktop
f. CtrlAlt-F1 takes to terminal login
g. Log in, looked at dmesg, syslog shows no errors but looking at Xorg.[0-5].log shows:

Code: Select all[     7.942] (II) NVIDIA(GPU-0): Found DRM driver nvidia-drm (20130102)
[     7.943] (II) NVIDIA(0): NVIDIA GPU GeForce GT 240 (GT215) at PCI:1:0:0 (GPU-0)
[     7.943] (--) NVIDIA(0): Memory: 1048576 kBytes
[     7.943] (--) NVIDIA(0): VideoBIOS: 70.15.27.00.00
[     7.943] (II) NVIDIA(0): Detected PCI Express Link width: 16X
[     7.945] (--) NVIDIA(0): Valid display device(s) on GeForce GT 240 at PCI:1:0:0

[Code] ...

After looking at this post [URL] .... poked around at the back of the monitor and found the DVI cable loose. Plugged it in tight and rebooted and Gnome desktop came up as good as ever.

Step b. , as it turns out, was someone had adjusted the monitor height resulting in the DVI cable coming loose but not getting pulled out entirely.

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Debian Configuration :: WiFi Router Doesn't Give Internet To Other Devices Connected

Oct 21, 2015

When I connect my Debian PC to my WiFi router my PC doesn't get internet if other devices are connected to it .

When i disconnect those devices and connect my Debian PC only then my PC connects to internet but other devices connected to it later do not get inernet connection.

When I connect my Debian PC using LAN Cable to the same router all devices work fine.

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Debian :: Removable Devices Auto-mounted As Read-only?

May 29, 2010

Quote:

Currently when I insert a removable device, it is auto-mounted as readonly. To use it I have to do this every time.

Code:

sudo umount /dev/xxx
pmount xxx

This applys to every removable device I have, and did not exist on my previous distro. Debian amd 64 Squeeze [URL]

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Debian Configuration :: Deconfiguring Network Devices Is Slow

Jan 26, 2010

I've been keeping my feet wet learning Debian. So far only in a virtual machine but I have had that machine running every day. I'm running a Lenny/Squeeze mix.The system is running well, yet every time I reboot or halt the system there is a long pause at the "Deconfiguring network devices" message. I traced the message to S35networking. With this virtual machine, which is a model for my eventual physical machine installation, I have only a single wired eth0 NIC (pcnet32).

I'll take a wild guess the script might be trying to find additional cards to halt, or perhaps a wireless card that does not exist, but that is just a guess. I'm stil learning my way around with how the init.d scripts and various /etc config files interact.I'm using a static IP address. DHCP is disabled, as far as I can tell. I did not notice anything in the logs.

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Ubuntu :: External Hard Drive - Error "read / Write Permissions" On The Folder Properties

Dec 16, 2010

i borrowed an external hard drive from my friend to back up a load of stuff on my windows partition before reinstalling it. I am doing this through ubuntu. I am trying to zip up folders like My Documents etc and chuck them on the external hard drive but it always comes up with errors to do with read/write permissions. In the permissions tab on the folder properties of the ext hard drive it says I am owner but i have no file access (only folder access is create and delete files). When i try to give myself read/write permission it just goes straight back to nothing when i look at it again.

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Debian :: Using OpenSUSE Can't Read Or Write On The HDD

Aug 8, 2010

I want to use dual Monitor on Debian Lenny amd64, I have the nVidia 8600 GTS. I googled several times, I have to change the xorg.conf (as it seems) but I can't - no rights.

And there's another thing... I have a dual boot system along with the openSUSE HDD but I can't open it. And using openSUSE I can't read or write on the Debian's HDD. How can I change that?

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General :: Installing Debian On External (connected Through USB) Hard Drive?

Apr 23, 2011

I've got Vista installed on my notebook and I've bought an external drive (1,5 TB, but its size shouldn't matter in this case) and after formatting it I left 10 gigs for future purpose. Now, I decided to install 64bit debian on the unallocated 10 gigs. And so I did. To be precise: I have SATA drive inside my lap and hard drive (it's also SATA inside the cover) connected to my lap through USB. Boot sequence was 1)CD/DVD 2)hard drive 3)removable drive. During the installation the installer detected my internal drive as /dev/sda and my external drive as /dev/sdb. I decided to install grub on /dev/sdb (it was logical to me, since I didn't want to mess up my regular drive's MBR). Installer created 5 partitions on my USB drive. After booting from my external drive (look below*) I've got a message saying

Code:

error: no such partition Entering rescue mode... and after that I was in grub rescue console. When I typed ls I've got an output

Code:

(hd0) (hd0,msdos1) (hd1) (hd1,msdos5) (hd1,msdos2) (hd1,msdos1)

When I tried to type

Code:

ls (hd0)/

I only got a message

Code:

error: unknown filesystem This occured for all the listed devices... On my internal drive there were (during the installation and running the live cd) 3 partitions detected (vista os, data, rescue disk) so I don't understand the output that ls in rescue console gave me. about booting from external drive: I did that after pressing ESC - I've got a prompt to choose which device I want to boot from - this wasn't working properly; after changing the boot sequence the grub started but with the abovementioned error message...

If there's any info about exact names/types/devices of my installed partitions needed I will run live CD and check it. If any other info is required I will provide it (I tried to describe the problem in the most precise way ) What I was thinking about: maybe there is a problem with ordering of the devices - when I boot from DVD my removable disk is treated as the "second one" and after booting from the removable disk it becames the "first one" or something like that? If any of you have any good info on how mapping of the device names works it would be appreciated, since I couldn't find anything useful or I just don't know what to ask google about.

1) How to install Debian on a removable disk (I had no problems with installing Linux on pendrive but I did that from VirtualBox and it was some time ago) OR how to install GRUB on a removable disk? (unfortunately, I cannot install 64bit system through VirtualBox)

2) What's the logic behind naming devices under /dev? How come the devices in grub have their names mapped as hdx etc and I've read that hdx are the names for IDE/ATA drives and sdx is the proper name for a SATA or USB device

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Debian Configuration :: Mount USB But Can't Write / Only Read

Oct 11, 2015

When I plug in a usb flash drive, my Debian mount it, but when i am going to write, mkdir, rename file or paste a file permission denied.

The result of Code: Select alldev/sdc1 /media/usb0 auto rw,user,noauto 0 0

is Access denied

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Debian :: Mount HFS+ Partition In Read/write Mode

Aug 25, 2010

I have installed Debian on My Macbook Pro.

I want to be able to write to the HFS+ partition. I have disabled journaling on the HFS+ partion.

I have the following in my fstab:

But it still mounts as read-only.

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Debian Hardware :: Blu-ray Writing - Wheezy Can Read But Not Write CD / DVD / BR

Feb 18, 2014

I am trying to get Debian 7.4 to burn 50Gb Blueray disks for backups using K3b. The GUI based program is important.

The reason I am using Linux Kernel 3.12-0.bpo.1-amd64 is that I am running an i7-4770K CPU and the motherboard a Supermicro c7-z87-oce (NO overclocking) and 32G RAM. I have had no other problems since using the backported kernel and turning off the onboard graphics and using an nvidia G210 graphics card.

The Pioneer BDR-209M CD/DVD/Blueray burner reads CDs and DVDs to the extent I am able to install Wheezy, and then use a backported kernel. However, it will not write CD's, DVD's and it won't recognize Blueray disks.

I have spent some time weeding through conflicting information and I wanted to verify there is not a work around. I have downloaded and installed the current version of cdrecord to no avail. I have completely removed everything CD/DVD/Blueray related and reinstalled, also to no avail.

Then I came across this statement from: [URL] ....

In all programs of the fork that send SCSI commands, you may be unable to access any of the CD/DVD/Blu-Ray drives at all if you are on Linux-2.6.8.1 or later. This is due to a missing workaround for the Linux kernel interface change that happened with Linux-2.6.8.1.

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Debian Hardware :: CD/DVD Combo Can Read/write DVDs But Not CDs?

Sep 9, 2010

My CD/DVD combo can read/write DVDs but not CDs. I have tried to Google for a solution but didn't find any. I run the latest Debian Sid.Some information:

$ cat /proc/sys/dev/cdrom/info
CD-ROM information, Id: cdrom.c 3.20 2003/12/17
drive name:sr0

[code]...

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Debian :: Sata Disk Write Speed Is Very Slow ?

Sep 14, 2010

I got a new machine with GA-p55A-ud3 mobo and a WDC WD10EARS 1T disk.

When I tried to benchmark the disk IO, I was suprised by the low write speed:

The related output from my lspci:

The related output from my lshw:

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Ubuntu :: New PC Won't Recognize Storage Devices?

Sep 30, 2010

My friend bought a new PC, and he's duel booting Ubuntu 10.04LTS and Windows 7 Ultimate. At first I tried partitioning the hardrive using fdisk in Ubuntu, but it couldn't find hda. After looking in /dev/, there wasn't hda, or any sd* devices. I looked in gparted and used the installer afterwards and both came up with nil. I installed Windows, updated the BIOS using the utility that came with the mobo, and tried seeing if Ubuntu could detect my hardrive and it couldn't. I even turned ACPI off when booting and that didn't work either.

The motherboard is a new Gigabit with 3 PCIe slots and a USB3.0.

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