Ubuntu :: Hard Drive Sectors Lead To A Really Sluggish System?
Jul 26, 2011
My sister's laptop (toshiba satellite l550 running lucid) often runs really, really slow, even after a fresh install. Going through the gnome main menu, everything just lags by several seconds. Closing applications often takes a while, etc. I've run top and iostat to determine what the problem is and it seems to be IO-related. User processes and system processes don't take up more than a few percent, but the average load is usually over 2 even when I'm barely doing anything. Top shows that, whenever everything slows down, the 'wait' criterion is pretty high.
Now, I've also tried installing lucid to an external USB hard drive and that works fine. I'm currently running the S.M.A.R.T. diagnostic and so far I've got the attached screenshot to show. Only the criterion shown and the 'current pending sector count' are showing warnings.Any thoughts? Could the performance issue be related to the hard drive warning? I'm not planning to replace the hard drive just yet, because this laptop still has a two-year warranty.
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Jan 20, 2010
I recently got a bad virus that wouldnt let me reinstall Windows so I figured I would install Ubuntu and give it a go, but now it says my hard drive has "many bad sectors" a quick Google search shows many ways to fix this in Windows, but how do I do it in Ubuntu?Easily since Im just getting the hang of things.
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Mar 24, 2011
How would one determine the capacity in sectors or LBAs of a USB Hard Drive? If I know the USB device number, like from 'lsusb', is there someplace on the system to get other information about the drive? What I want to do is have a program go out and get this information just for the number of LBAs on the drive itself. Partition info doesn't matter for what I am doing.
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Feb 21, 2010
I recently tried Fedora on my laptop (previously Debian; I was bored one day) and gnome-disk-utility (palimpsest) warned me that my hard drive had numerous bad sectors. I re-installed Debian to find that this software was installed before so why had it not warned me?
When I load the disk utility, it says SMART is not available. I've got smartmontools installed, I can run a self-test with smartctl but I don't think this shows bad sectors. I've tried starting smartd on startup but the disk utility never changes from "SMART is not available". It is possible for it to work with this hardware as it works in Fedora on this laptop; any ideas?
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Mar 20, 2010
I have minor problem with upgrading a hard drive. I am running an old pentium lll with two hard drives. On the first hard drive I have two partitions of around 90GB each. On the first partition is installed winXP and on the second partition I have Suse 10.3, both booted by grub and living happily side by side. My second hard drive (which is formatted for windows is only 4GB.
My problem arises when I try to replace the 4GB with a 80Gb hard drive. When I disconnect the 4GB drive the system fails to boot up and complains with error 21.
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Jan 26, 2011
I'm kind of new to programming in Linux & c/c++. I'm currently writing a FileManager using Ubuntu Linux(10.10) for Learning Purposes. I've got started on this project by creating a loopback device to be used as my virtual hard disk. After creating the loop back hard disk and mounting it has the following configuration.
Code: $> sudo fdisk -l /dev/loop0
Disk /dev/loop0: 10 MB, 10977280 bytes
255 heads, 63 sectors/track, 1 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/loop0 doesn't contain a valid partition table Now what I want to do is develop a c++ program to read & write files to this loop back device,which I'm using to simulate an actual hard disk,at the blocks & sectors level. So far I've come up with the following code. But I'm still unable to read files from the hard disk one block at a time.
Code: #include <iostream>
#include <stdio.h>
using namespace std;
int main() {
char block[512]; int length=0;
cout<<"Implementation of the File Handler Read Method..."<<endl;
FILE *f = fopen("/dev/loop0", "r");
if(f == NULL) {
cout<<"Error In Opening the HardDisk File Retuning Error..."<<endl; return -1; }
//Read One Block of Data to Buffer length = fread(block, 1, sizeof(block), f);
/* Do something with the data */ cout<<"Length : "<<length<<endl;
return 0; }
When I run this Program All what I get is the message for NULL. "Error In Opening the HardDisk File Retuning Error...". So I could open the loopback device as a file an access it at the sectors & block level.
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Sep 19, 2010
I am running 10.04.1 and despite everything I have tried I cannot suss out why my machine is so slow. It runs fine in the other OS installed but in Ubuntu there is a lag to every action, eg if I drag a window it follows about 3 seconds later. Basically everything is delayed for some reason. It is becoming very annoying and I am contemplating a reinstall, could someone please prevent this. The system is running on an old Athlon 2800 and I have attached a screenshot of running processes.
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Dec 19, 2010
How to scan and fix Bad Sectors on Hard Disk without damaging data?
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Jun 10, 2010
would anyone here happen have gotten one of these successfully up, running &, aligned on 5.5? i only want two partitions. one 2gig for swap and the rest mounted @ /. i've googled myself into complete and utter confusion.[Moderator edit: changed the title to something more informative
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Jun 11, 2011
I have a problem with my Debian squeeze system. After I have run some CPU-intensive application for a while the system becomes sluggish. Ok, maybe one would expect that. But. The system remains sluggish even after that process has been killed and then top shows high cpu usage from unrelated processes and a high %sy percentage as well. I don't really know where to begin solving this problem except I've checked that this is specifically related to (at least) CPU use as opposed to heavy memory use or IO (by running an application with low mem/no io but high cpu use). I am running the latest standard kernel from squeeze, 2.6.32-5-686. Also, thing is, I remember having similar problems with other Linux distros before, where for example gzipping a large file would cause the same. I did not have similar problems on {Net,Open}BSD, so a hardware fault seems an unlikely reason to me.
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Aug 6, 2010
I can't seem to find any programs or applications for linux that will find bad sectors of a usb drive. I have seen plenty for Windows, but I was wondering if there are any for linux.
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Mar 11, 2010
I switched to Chrome half a year back because Firefox had become sluggish on my Linux box (both Ubuntu and OpenSuse). 6 months later and the problem remains - anyone know what is going on and any tips to improve? I still need to use Firefox occasionally for Firebug.
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Jan 28, 2010
I've currently got 9.10 and have (somehow) managed to mess the system up already!It's a new computer so I'm not fussed about data loss etc, but is there a way to completely reset the system which will also format the hard drive (as it was a download that has messed it up!) without losing the O/S?
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Aug 22, 2010
I have a 1.5TB Western Digital Caviar Green in a USB 2.0 external setup with an ext4 file system. I'm going to purchase a 2.0TB Western Digital Caviar Green in a USB 2.0 external case, copy the data over and put my 1.5TB in a fire-resistant box in another house. I'm worried about a couple things however:
(1) I'm worried about the long-term viability of _any_ file system years into the future. I've been storing my data on hard drives (instead of CDs, DVDs or BDs) for years now due to their higher reliability than optical disks. However, the file system used in optical disks is UDF which I think has much longer viability into the future. I'm not going to store terabytes of data on optical discs of course, so I'm wondering what I should choose for a hard drive file system. FAT32 or NTFS (due to Windows' 90%+ presence on the desktop, including still being used by Windows 7) may be the best choice, but I much rather have a open source file system, especially one that allows for permissions, timestamps, etc.
(2) As for my 2TB hard drive that I will be using for a while into the future, should I continue to use ext4 (I've had no problem with it thus far), but is there another file system that has better performance when storing and transferring gigs of data?
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Jan 24, 2011
I'm wondering if there's a way for me to install Ubuntu on a hard drive that I'm shipping to my brother. He has a different system and I'm sure it has some proprietary things that I'll need to set up. This is his first Linux system so I just want it to be ready to go when I ship the drive to him. I also don't want the install to take over my boot loader for my system...I am yet to successfully fix a boot loader after I screw it up (I know it's possible but I always just reinstall) and this time around, I'm hoping to avoid doing
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Dec 29, 2010
I have 2 WD20EARS hard drives on the way (2 TB green WD disks with 4k sectors) and I'll be installing Centos 5.5 in RAID1 on them (2 partitions, one 16 GB / at the beginning and the rest in its own partition). I read the following thread: [URL]
and it seems that I might be having problems with the 4k sectors (Advanced Drive Format in WD lingo). I'm confused as to what exactly to do. I was thinking of downloading Fedora 14 Live CD and partitioning there and then switching to Centos 5.5 to install. Will that work? Seems I want the md 0.9 metadata because it doesn't have the space limit for me (2 TB) and it's stored at the end of the partition so it avoids alignment issues. Will I be able to make that happen with Fedora 14?
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Dec 11, 2010
Can someone point out such a program?
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Jun 22, 2010
Something caused my Fedora 11 system to reboot this evening, only it keeps trying to boot from a CD/DVD. I get to a prompt that says "Boot from CD/DVD" and then it appears just to wait. I can insert my Fedora 11 installation disk and boot from it in rescue mode, and then I can see my entire file system, so I don't think the hard drive has failed. The system just doesn't seem to want to boot from the HD any more. I can get to a command line using the Fedora rescue mode, but I don't know what to do once I'm there.
one additional note. Around a month and a half ago I deleted some files by mistake and wanted to try to recover them. I tried a bunch of approaches that I came across (none worked), and I do remember that one of them had instructions to unmount a portion of the filesystem to protect it from being overwritten before I could recover the files.
Unfortunately, at this point I have no real memory of exactly what I did, but the system has been working fine since then. I would have thought that I had rebooted since then, but it's possible that this is the first time I've rebooted. Could I have unmounted some part of the file system such that it would still by unmounted even when rebooting? How can I check this from the command line I get in rescue mode? (My file system gets mounted under /mnt/sysimage/)
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Feb 7, 2010
What i really need to know is if there is a way to access a Ubuntu file system on a hard drive from a live CD. When i acess it now it just shows the Windows files on it, and i cant access the Ubuntu partition. What happened was this: I was trying to install Ubuntu on an external hard drive. I moved all the settings to the Hard drive so i didnt think it would affect my other drives. I mustve missed one of them because insteading of loading GRUB like it normally does, it came up with GRUB error 21 and did nothing. I tried to fix it, but nothing worked. I finally decided to unplug everything except the external and install it from there, so id atleast have a functioning desktop. As it turns out, my comp doesnt suport USB booting. So the only way i can use my computer is by Live CD. I was trying to fix things so i had both hard drives power supply unplugged. being slightly drowsy from staying up late that night, I plugged them in while my computer was on. the first one went in just fine, no problems. The second one though, also my master drive, i was having troubles pluging in. while i was turning it to fit in, it made a big spark and shocked my master drive. That drive had my MBR and Windows on it. Now It cant find a MBR, and i cant access the ubuntu partition on my slave drive. Is there any way to save this?? im 99.9% sure ive screwed myself over hardcore epically, but im hoping to save at least 1/2 my data.
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Jun 16, 2010
I have 6 hard drives that have 9.10 and 10.04 on them. Not as a dual boot, but some hard drives have different versions on them. When I have plugged the drives in a couple of weeks later, the grub is gone and system will not boot. I get like a grub 1.5 error and that is all the options I have. Does anyone one know why this happens? Nothing on the drives but the O/S to get rid of windows. All drives worked perfect until they were removed and installed later.
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May 21, 2011
I have a dual boot machine with WinXP/Linux Mint on it. I am looking to erase both of them and put up Ubuntu 11.04.
I have chosen to go with a live USB install for this. The live USB boots fine and everything seems usable. However, when I tried to install it would tell me that I do not have 4GB available for the install which seemed a bit weird since I have a 160GB Maxtor HDD.
After digging around a bit I realized that the system does not see my hard drive. Running fdisk -l would only show the USB drive that I am booting from and not the main HDD.
I tried to have a look in /dev to see if my HDD is there and not mounted. But aside from sda which is the USB I did not find an sdb or hd entry.
Has anyone encountered a similar problem while trying to install Ubuntu 11.04?
P.S.: The HDD works fine, I can see it in BIOS and in the other 2 OS-es that I have installed.
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Jul 14, 2011
when I load into Ubuntu 11.04 from my USB drive, why can't I access the files on my internal hard drive? I mount the drive but I cannot see any of the music, videos or documents contained on that drive (which is also an Ubuntu 11.04 drive). I was wondering so I could copy those files onto my external hard drive and reinstall since my Ubuntu crashed.
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Nov 30, 2010
I am new to linux and have searched over a period of days on the internet for any reference to installing XUBUNTU 10.10 onto a brand new hard drive that has no operating system on it I have successfuly made the CD using this PC I am on now and Nero Burning Rom from my Nero 9 aplication but I have built a new PC that I wish to put XUMBUTU onto
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Jan 29, 2011
I have been researching the web for a program which will allow me to backup my entire hard drive so that I can restore my system if need be. I am however unsure which is the best one to use if I want to achieve this:Somehow I want to back up my hard drive containing my ubuntu system byte for byte so that if the hard drive were to fail I could simply go to the store, get a new hard drive, restore my backup and be up and running again without having to do any re installments of ubuntu or any other programs for that matter.
What is the easiest program that does this? I would like it to support incremental backup.rsync with the "Back in Time interface"?bacula?
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Aug 3, 2011
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.
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Apr 3, 2011
My hard drive all of a sudden starts to read and write all on its own for around 15 seconds at a time while at idle or while I am just browsing the net. At first I thought it was from cron running but I have that disabled.
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Oct 5, 2009
I've installed Fedora 10 short time after it came out. Now I am having some problems unmounting thes drives on restart or shutdown. It hangs at the stage of 'unmounting file system'. I've looked into this matter and discovered that those drives are automatically mounted and shown on the Gnome file browser. As the /etc/fstab indicates, it is not mounted by it. I must have done something to have all the hard drives shown in the file browser and now Fedora seems to be unable to unmount them.
Quote:
#
# /etc/fstab
# Created by anaconda on Mon Sep 7 20:25:11 2009
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
[Code]....
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Nov 4, 2009
This probably isn't the best way to go about this, but I am pretty nooby. I took the hard drive with Ubuntu install and made it the second SATA drive, and then put a new SATA drive in as the first and installed Fedora on it.Now I want to access my files from the Ubuntu drive and put them on the new drive but when I try to access it, I can look at some files but the majority of them (like my music and a lot of my documents) it says that I don't have permission.Is there some way I can get to these files? I tried searching but I couldn't find anything relevant
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Apr 12, 2010
My external disk does not appear as mounted on the desktop (It's e-Sata and NTFS, samsung 1.36 Tera bytes ) There's nothing in /media, nor it appears on the desktop as mounted. What can i do to be able to use it?
[code]...
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Mar 12, 2010
I would like to setup a CentOS file server with LVM and Raid1. Having 6 x 500GB drives, 4 x 1GB Ram and a Quad Core Cpu, I am considering to configure 3 hdd as LVM then raid 1 to the remaining 3 hdd's.
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