Hardware :: Hard Disk: Not Reading Partitions Or Not Readable?
May 2, 2010
I've a faulty hard disk I'm trying to read data from before I send it to the professionals. The disk makes some "good" mechanical noise when plugged into an IDE-USB header into my machine, so I think it's spinning up OK.
Under Windows, the disk is seen in admin tools but I can't do anything to it; it's unreadable and unalterable.
Under Linux (Ubuntu), I see the sdb appear in /dev. No partitions though (no sdb0 etc). At first, I thought this implied that my MBR was bad and the partitions could not be found. But, using dd suggests it's a little worse that:
Ubuntu 10.10 is dual booted but it is my primary OS.
Unfortunately it's on the outer edges of the disk in an extended partition.
This has always bugged me, with regards to read/write performance.
Do my concerns of reduced performance have any foundation? Should i bite the bullet and format the drive installing ubuntu first?
I ran the disk read benchmark and my read speeds were 100MB/Sec at the beginning of the test to just 55MB/Sec at the end. I have no idea if the position of the test has any bearing on the position of the disk or whether the speed recorded is affected by other factors such as the tests function or simulation.
I want to make the transition from windows (sick of it). Im using Lenovo G530 Laptop and was wondering which would be the best Linux Os (meaning Ubuntu, fedora or something else). Keep in mind that I mostly use my laptop for college work and a lot of video and audio editing. I also want to be able to run Dual operating system (meaning that I wanna run both Linux and Windows) from the same computer as it might be easier for me to make the transition a little bit more easier. That being said I need someone to give me tutorials (video preferred) on how to make the partitions on the hard disk and step by step instruction on how to install both the two OS in my laptop.
i have installed ubuntu version 9 and i cant seem to find where hard disk partitions are,what do i do?also what do i do to install the webcam and to change from gnome to Kde enviroment!!i also installed virtualbox but i seem not to find the icon
Especially /var because I am running a MYSQL server on this box. I want to know if there is a safe procedure to follow to move these partitions from the current sda2 and sda3 that they are now to sdb2 and sbd3 because this is a much bigger disk. I don't want to break MYSQL and I don't want to be down for a long period. I have heard of some people suggesting a sym link to a /newvar and /newuser on sdb but I have also read this will not work when moving to a different physical drive.
I got a new hard drive yesterday, a Seagate Baracuda XT 2000GB SATA3. I'm running it on the SATA3 jmicron chip in AHCI mode, and Opensuse 11.2 is having issues with using this hard drive properly.
The hard drive seems to take a while to detect, for one thing. After it is detected however, I am told I have no hard disk that can be used for installation. The exact message is:
"No hard disks were found for the installation. Please check your hardware!"
After that, I'm told the partitioner can't read the partitions on my hard drive properly:
"The partitioning on disk /dev/sda is not readable by the partitioning tool parted, which is used to change the partition table.
You can use the partitions on disk /dev/sda as they are. You can format them and assign mount points to them, but you cannot add, edit, resize, or rename partitions from that disk with this tool."
I partitioned the new hard drive under Windows, with a partitioning tool called Partition Wizard (free / home version). I'm not sure if hard drives partitioned with this tool are not recognized by OpenSuse's partitioner, or if it's something else.
I already installed Windows on this hard drive, so I can't delete all the partitions I have so far and start all over again (I'm keeping my system a dual-boot between Windows 7 and openSuse 11.2). What can I do so OpenSuse will see and modify my partitions? If it is the partitioning not being understood, is there some sort of tool that can make the partition table of the hard disk linux-readable? (a free Windows program that could do such).
I have what seems to be a hard disk Write speed problems with my first hard drive. Timing the cp command of a 700 Meg file takes about 8 secs from disk 2 to 3 but takes 25 minutes from disk 2 to disk 1.
Here are the details: Kubuntu 9.04 (Kernel 2.6.28-15-generic) Hard Disk 1 : /dev/sda (WDC WD2500KS-00MJB0) Partitioned /dev/sda1 ext3 / 10 Gigs /dev/sda2 extended 222 Gigs /dev/sda5 linux-swap 2 Gigs /dev/sda6 ext /home 220 Gigs
Hard Disk 2 : /dev/sdb (WDC WD2500AAKS-00F0A0) Partitioned : /dev/sdb1 ntfs 16 gigs /dev/sdb2 xfs /home/eric/data_drive 216 Gigs Hard Disk 2 : /dev/sdc (ST3500320AS) Partitioned: /dev/sdc1 xfs /home/eric/data_drive2 465 Gigs
By doing 'time cp ...sdb1/test.avi ...sdc1' takes about 8 seconds and same vice-versa. the command 'time cp ...sdb1/test.avi ...sdb1/test1.avi takes about 11 seconds and the same holds true if sdc1 is used But copy sdb1 or sdc1/test.avi to either sda1 or sda6 and it takes 25 minutes. Same problem if I copy from the same drive partition (sda). I have booted a livecd Knoppix 6.2 and the same problems happens.. So safe to say it's not Kubuntu. The only thing that is left to do is backup and reformat the partitions as XFS and try again. I also did a full smartcontrol Extended test and no errors. Checked all the various logs and nothing found.
I just bought a new 2 TB hard disk to replace my old 175 gig one. I currently am dual-booting Lucid Lynx and Windows 7, and rather than go through the process of reinstalling both, then reinstalling all my programs, settings, and everything, I was wondering if there's a way I can just copy the partitions on my 175 GB disk to the new one, grow them to fill up the rest of the free space on the new 2 TB disk, and then plug that HD into the primary master plug on my motherboard... will that work?
I'm trying to install Ubuntu 10.10 64-bit on my laptop HP pavilion 3046ee . When I reach the partition part , it doesn't detect the Windows 7 os , and doesn't detect any hard disk partitions ( it sees the whole hard disk as one unallocated partition ). I faced the same problem when I tried Ubuntu 10.04 LTS.
To use squid i want to install linux in my 200 GB hard disk. I need guidance regarding to installation phase.A server which will be dedicated for squid proxy what things should I keep while installing my red hat linux operating system.I mean the partition sizes for swap ,root ,boot and any partion for squid cache should I need during making partitions ?
We have a server with RAID 0 with 4 hard disks on it each 250 GB. Linux kernel must find one hard disk named: /dev/sda with 1TB capacity. right? And also we have 2 partitions on sda: sda1 and sda2. We want to add another partition but we don't have enough space.
Now the problem: If we add another hard disk and run Code: fdisk -l Will the /dev/sda space incremented automatically so we can add new partitions or we must do something?
i've fedora 15 & windows vista installed on hard disk partitions.i can access windows files from fedora but how to view fedora files when i'm working on windows???
I tried to install ubuntu 10.10 today through livecd. but the partitions in my 60gb samsung harddisk are not detected. My entire harddisk is shown as unallocated free space. Also gparted is not detecting the partitions as well. I am currently not facing any problems with my partitions in windows xp. I tried the solution given here (to no avail): [URL]. I have had no such problems with previous versions of ubuntu.
My PC configuration is as follows: CPU: AMD Athlon II 245 X2 RAM: 2GB DDR2 MB: ASUS M2A74-AM SATA DVD-Writer WD 320GB SATA HDD.
SATA Controller is in AHCI mode in BIOS. Partition Table: 1. Pri. (Windows 7 Ultimate) 2. Log. (Data) 3. Log. 15GB free space (want to install Linux in this partition)
I want to install Debian 5.0.4 from DVD. But the installer is not showing any partitions, it says entire hard disk is blank. But I ran 'fdisk -l' in the console, it shows the partitions correctly.
after installing Ubuntu on one WD 500 GB hard disk and after making mistake and pasting wrong code into Terminal:my OTHER WD 500 GB hard disk that was also in the system (I guess it was "hd1") - died.The problem must be, I guess, I typed wrong code: "hd1,1" instead of "hd0,0".)500 GB (NTFS) of data was on that other (non-Ubuntu) hard disk, and now I can not access it anymore. While booting, system gives "Hard Disk Error" warning and stops.One again: I installed Ubuntu od one hard disk and at the end of instalation I pasted wrong code for GRUB, giving address of another hard disk. Now that other hard disk has error and will not work
So I downloaded the Ubuntu 10.04 Desktop Edition and burned it to a disk. Shut off my computer and restarted it, booting from the CD Drive. It couldn't find it. So I thought maybe there was an unrecorded write error so I burned it to a second disc. Well after burning it I noticed I can't even see the disc anymore. It doesn't seem to be recognized at all. That explains why it didn't boot from CD.
But what I want to know is why on earth is it basically going invisible and not working? I've never had a problem with burning discs, especially Ubuntu stuff... So why...? Well I just booted up the CD on a different computer and it seems to be working fine. So it appears that my computer simply has ceased to see bootable discs or maybe its just non-empty discs.
I have a sata 320 gb with mandriva linux 2009.1 on it.And it is what curently atached to my cpu. It is shown as 'sda' in the partition table.I also have another 40gb hard disk with windows xp installed on it.It is shown as 'hda' in the partition table . Now what i want to do is attach this 40gb hard disk to my pc and configure grub on my 320gb hard disk('sda') so as to boot windows xp(which is residing on the second hard disk,'hda')Can anyone tell me if what im doing is feasible or not? If it is feasible,can anyone suggest me how to get it working. I know i just need to add 2-3 lines to my grub.conf, but dont know what exactly i need to write.
I had a dual boot (windows 7 + debian), both of them installed in my internal hard disk, with the GRUB in it. I have recently installed a second linux distro (mint), but I put it in an external hard disk. Now the GRUB allows me to boot any of the three operating systems, but I need the external disk to do it. It seems that after the mint installation the GRUB is now working from the external disk (if the external disk is not connected, the machine does not boot.) �Is there a way to change the location of the GRUB, to the internal hard disk of my laptop?
I have a laptop with Ubuntu 9.10 installed. It will not boot to the login screen. If I remove this HDD and connect it as a secondary drive to another PC running Ubuntu, will I be able to access the files on this HDD? There is a lot of data which I haven't backed up which I need to retreive. I don't think the hard drive has failed.
I was using Terminal and browsing a directory in my home folder. My "home" directory is located on "/dev/sdb1". When in Terminal I typed "ls" in one of my directories and the output was garbage. The output didn't show the files in the directory. I think it said something like, "input/output error". Unfortunately, I didn't write the exact error down. Instead I rebooted.The hard disk with the problem is:
Code: $ sudo hdparm -I /dev/sdb [sudo] password for brian:
This is the third 9.10 install to do this on two different laptops, so wondering what's up...
In both cases, the goal was to leave a large chunk of unpartitioned disk after the Ubuntu partitions, for a second OS install or a filesystem Ubuntu cannot create like NTFS.
When I install with manual partitions, the system can't boot and asks for me to insert a system disk and press any key. When I reinstall telling Ubuntu to "use the entire disk" it then works.
First laptop, first try:
Remainder of the 500GB disk is free space.
Fails to boot, "insert system disk".
First laptop, second try without the /boot partition:
Remainder of the 500GB disk is free space.
Fails to boot, "insert system disk".
"use entire disk" works perfectly.
Second laptop, first try:
Same thing, non-system disk or disk error, insert system disk.
Second try "use entire disk" is currently in progress but I expect the same to happen.
I have a machine that is dual booted with win vista. It has 3 HD's. I created the partitions for the non-bootable drives in windows, ages ago. Prior versions of ubuntu would detect the drives, when I clicked on them in nautilus, I was prompted for my password, then the drives were mounted for the rest of the session. any idea how to mount these drives properly? The documentation linked to above describes ext3 and fat32 file systems (I tried both)
I have a simple C program that reads a 1 GB file from disk into memory.The first time I run this program, the process takes several seconds. But if I run this program again immediately after it finishes, the read happens almost instantly. What is going on here?My suspicion is that the operating system is realizing that the data I'm trying to read is still uncorrupted in memory (its been freed but not overwritten), so instead of reading it again, it just gives me the same block. I would really like to know what this process is called, or any Googleable keywords that would allow me to research it.
The reason I ask is because the size of my input data has increased. Now I need to read in a 6 GB file (my system has 12 GB of RAM), but I'm not observing the same behavior with the larger file. Each time I run the program the read takes an equally long time.
We have G5 PPC with Mac OS 10.xx (panther?). I need files from it, but we don't have the passwords for the machine, and have no disks with which to recover data or reinstall the OS. So, I used an Ubuntu Jaunty Jackalope 9.04 disk and mounted the drives, but when I try and open the target dir, I get permission problems.
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.
