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.
I have an external hard drive connected via usb cable - /media/New Volume - and mounted in Ubuntu 10.04. How can I "write zeros" to this drive or maybe write random characters in an effort to wipe data on this disk?
I have a 4 drive RAID 5 array set up using mdadm. The system is stored on a seperate physical disk outside of the array. When reading from the array its fast but when writing to the array its extremely slow, down to 20MB/Sec compared to 125MB/Sec reading. It does a bit then pauses, then writes a bit more and then pauses again and so on.The test i did was to copy a 5GB file from the RAID to another spare non-raid disk on the system average speed 126MB/s. Copying it back on to the RAID (in another folder) the speed was 20MB/s.The other thing is very slow several KB/s write speed copying from eSATA drive to the RAID.
My father installed Kubuntu to his external hard drive to try it out, however, it is running extremely slowly. It takes a good minute and a half to boot to the Plasma desktop and it even seems to run faster off of the LiveCD.His system easily meets the specifications to run Kubuntu (4 gigs of RAM, decent NVIDIA graphics card) yet it slows to a crawl immediately upon booting. Does anyone know how to fix this? The hard drive is a Western Digital MyBook, 475GB model.
When I copy files to my External NTFS HDD using Ubuntu the write speeds are about 10-12 MB/sec, but when I copy files using Windows the write speeds are about 25-30 MB/sec.
Exact same files, tried all three ports on my netbook and even timed it to see if the speeds are by any chance miscalculated by either operating system and Ubuntu is definitely writing at half the speed.
So what could be the problem? When I had Windows on this Netbook I never got had a problem with write speeds so I don't think it is a hardware issue.
So I just reinstalled OpenSUSE 11.2 and I went from having 20-30 mbps speed to and from my 1 tb usb ntfs external hard drive to having about 1 mbps transfer speeds now. Is there any suggestions for how I can fix this? I know it can go faster, I just need to figure out how. and would setting acpi=off at boot affect this?
Opensuse 11.2 KDE 4.3 64 bit EXT4 main disk NTFS external
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.
I got a dell inspiron 1501 laptop with a 80Gb sata drive what is the best solution to add data storage space for someone that love to have multiples operating systems at hand Note: I use mostly linux so I won't need to change my laptop for many years maybe ...
I have a laptop with only 30GB storage and I want to install Lubuntu in virtual box but Lubuntu needs 5GB of storage space which i dont have. Could i use an external 160GB hard drive to act as the hard drive for the virtual machine without affecting the files that are already on the external hard drive
is there a way to write/unpack .qcow2 hard disk image directly to real hard drive in Linux?(I know it's possible to unpack .qcow2 to .raw and then dd to drive, but I'd like to skip .raw since its large)
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
Whenever I transfer a movie into my 16GB USB flash disk, my whole system becomes windows-like and unusable!
When i drag the file(s) into the USB disk folder, it starts out fine and pretty darn fast (25mb/sec) then slowly decreases until it's unbearably slow (3m/sec) and as a side effect my whole system starts deteriorating. I basically have to wait for the file to finish transferring before i can use my desktop again!
This has been happening with every version since Karmic (all 64bit)- I put up with it because I don't use the USB stick that much.. but lately it's been my go to source for transfering large files to/from work.
I recently bought 320 GB Trancend external hard disk and working fine days back.Earlier i could copy from and to the hard disk with out any issue. I dont know what happened after that now i am not able to write any files in to the external hard disk. This is not NTFS formatted device. here is some of the out put from terminal.
Code: sundar@sundar-sundar:~$ fdisk -l Disk /dev/sda: 120.0 GB, 120034123776 bytes
I would like to install Linux Ubuntu 11.04 on an external hard drive - its partitioned and ready for Linux.I've downloaded and burnt the .iso file to a DVD so its all good so far...First of all... is this possible without messing up my macbook? I don't particularly want to break into my macbook to disconnect the hard drive (I read on a tutorial for a previous version of Ubuntu that I'd have to do that... - does it still apply to 11.04?) - as it voids the warranty (I checked ).The reason I ask this is because I had a friend who partitioned their internal hard drive and installed Ubuntu on it. But after installation was complete they couldn't boot up Windows 7 or Ubuntu... and it resulted in them having to clean install Windows 7... - I don't want to end up in that situation
Second... If it is possible to install it without messing up my macbook... - Do I just follow the install instructions but just make sure that where possible I make sure that everything is installed on my external hard drive?...I really need someone to put my mind at rest that everything will run smoothly and that I'll be able to run Mac OS X as usual but also that I'll be able to boot from my external hard drive to run Ubuntu.
i have installed Salix 13.1 LXDE version (Salix 13.1 is compatible with Slackware 13.1). I must use various external hard disks formatted with NTFS. The hard disks are automatically recognized and mounted with PCmanFM file manager, but only user root can write on them. How can I allow normal users to write on automounted external ntfs drives?
I have 350GB external Western Digital USB hard Drive.When I try to remove it from the system by executing Safely Remove Drive menu the fedora 15 system gets stuck.The processor starts giving a hum sound and it goes on even if it is left for half an hour in the stuck state.The Mouse is not working and everything is halted.
i have installed fedora 14 with so many libraries ,development tools installed on my pc but i usually have to present some projects which can run on my system .........and can't be executed or compiled due to absence of libraries and tools there so, i there some way to so that i can use this current installation on my hard drive of my pc to some external media like external hard disk and plug and use that installation anywhere on any system..
I'm trying to backup netbook files to an external optical drive. I can read discs but not write. A while back I tried using K3b but it did not see the external drive. Now it does, but tells me write access is needed and quits. I am in the cdrom group.
I'm getting a really low speed (2-3 mbps) while transferring data to my USB drive and external hard drive. I've heard this problem's there in Karmic but not in Jaunty but i have Jaunty and yet I'm facing this problem.
If I have Ubuntu installed on a USB drive and run it on a PC (not installing to the PC...just running the Live version), is anything at all written to the host PC's hard drive? I don't want the host PC's hard drive to be written to at all for security purposes. I'd be using Firefox, LibreOffice, and other apps that come with the Live USB version.
I am running Fedora 14 with the Gnome desktop and I have a 1 TB external hard drive that is msdos with approximately 200 gbs of data on it. I can unlock it and even read and copy files to my internal hard drive but I cannot add files to it, I use to be able to. I didn;t think i changed permissions.
I have a 500 gig external usb, and a few 8 gig flash drives. If i copy a file (say a movie or large file) from my primary hard drive (80 gig WD formatted to ext3) to a usb drive it transfers very slowly, about 2 mb/s. But if I copy a file off my secondary internal drive (40 gig seagate formatted to ntfs) it transfers full speed (25-30 mb/s) Its also very slow transfering between internal hard drives (again, no more than 5 mb/s) I checked and as far as i can tell both drives are running in DMA mode. Any reason my primary seems to be causing this bottleneck? it seems to preform fine otherwise (as it is the drive with my ubuntu installation on it)
So I recently got a WD MyPassport external hdd with 500gb capacity. I formatted it to NTFS so that it would be more efficient transferring data between my Ubuntu and Win7 dual boot. But now I want know if it is possible for me to create a 100gb FAT32 partition on the external without destroying the data on it.
My Toshiba 500Gb USB hard drive is not being detected anymore when i insert it in 9.10. It only started doing this from last week, it was fine before (and it works fine in Windows XP). The connections are fine and all, because when i type "lsusb", i see it as follows:
Bus 001 Device 003: ID 19d2:0063 ONDA Communication S.p.A. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 004: ID 0930:0b09 Toshiba Corp.