General :: Mount 2nd Hard Disk Without Erasing Data?
Jan 26, 2010
Is it possible to mount a 2nd hard disk without erasing the data that is already on it? If so, what command must I enter. The system recognizes that the disk is there, I just can't access the data because it hasn't been mounted.
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Mar 16, 2011
I have a directory /var/log/data its about 80 GB,It filling up quit rapidly.I don't have much space left in the system them So i will attaching another External HDD.My question is that i need to mount /var/log/data to new HDD.So i have old data and pulse new coming up.I don't want to copy data from /var/log/data then mount new HDD to /var/log/data you know what i am taking about is there a simple way like linking or any other.
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Jun 30, 2010
mount from the old hdd to the new hdd i mean (Hard disk)
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Aug 9, 2010
Risk to native OS from Live CD?
when booted from linux live cd, all partitions of hard disk become accessible without any restriction. How to block this?
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Apr 30, 2011
My hard disk is failing and I amnot able to boot into the system! Currently I have logged into the system uing Live CD! Any way to compress and back up the data in my hard disk in an efficient way!
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Sep 29, 2010
I have 2 hard disks and all together I created 6 partion in it.On primary I installed Windows XP and REST 5 partions were having data.From Second hard disk ,I copied all the first partion data to another partions and installed Red Hat 7.It took only 3 GB all togethr for Linux Distribution.Now I need to fetch my Windows data back.I logged from the Windows XP disk and I could see the second disk through disk managemnt .But it was showing "Unhelathy".But I will not be able to retrive the data.So can Anyone give soln for this.
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Mar 20, 2011
A friend of mine has just given me an old 80GB hard drive provided that i erase the hard drive. So could someone tell me that if i used Code: shred -vz -n 3 /dev/hda to erase all data contained on the hard drive Would i then have to reformat the hard drive so i could install a Linux OS on it?
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Jun 28, 2010
I am using an embedded platform in which I have connected an external harddisk (/dev/sda). The SCSI driver is present and I am using the SG_IO interface for performing the SMART commands with the Hard Disk. (Unfortunately not all the HDIO ioclts are present. So I opted for the SG_IO ioctl). But the data transfer (reading/write data from/to sector) is not working with the SG_IO ioctls. So I searched for some other options. Later in one of the places, I found that we can actually mount the /dev/sda to some mount point in /mnt and then make a XFS file system (mkfs.xfs) of this.
And then we can create the directories and do file operations on this mounted directory. Here the simple read/write systems calls can be used for this. I was thinking about this implementation. But I am confused how I can map the actual LBA (Logical Block Address) to the device file offset. I mean if I want to write to the sector 5, there will be a LBA for it. So I can do lseek on my device and then write the data there. So how the mapping between LBA and device file offset can be calculated.
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Mar 23, 2010
I had a drive that kept kernel panic'ing so my data center recommended using the spare hard drive to reinstall OS on, and import the data from the old drive. (they checked the hardware, it wasn't the hardware) The new install is done, and I need to mount the old drive and get backups off it since my data center does not provide management whatsoever.
It's the same OS on both (Cent OS 5.4 32-bit) I'm an advanced user on windows, but linux gets me. I can ssh in, do basic stuff like setup IP ranges and restart services. I normally navigate the box through SFTP so I have a gui. WHM shows me my drives as such
Found Disk: hda
Found Disk: sdb
so I'm assuming SDB is my old drive and the drive I need to access. I attempted to follow instructions on
cyberciti.biz/faq/freebsd-adding-second-hard-disk-howto/
but I'm assuming FreeBSD would work differently and I wasn't totally sure what the labels of the file systems should be.
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Sep 12, 2009
Just ran into an uncomfortable problem. I usually never save any documents on my machine, and keep all my stuff on an external USB hard disk. (an 80GB TrekStor DS microdisk q.u)
Well yesterday this disk just would not mount.
Read through related posts but nothing seemed to work. Even tried it on a Windows machine.
Tried TestDisk utility. Found nothing wrong with the drive, but still could not repair the MBR.log code...
Palimpsest Utility recognized the drive, but just will not let me do anything with it except format it.
How can i repair the partitions and MBR without losing all my data?
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Sep 1, 2009
Copy of IBM Server hard disk data to Another USB External Hard disk?
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May 11, 2011
I have one hard disk (call her HDA) that contains nothing but a single ext4 partition containing a backup of all my important data. Last night I did a clean install of Ubuntu 10.10 on my primary hard disk (call her HDB) and from there proceeded to upgrade directly to Ubuntu 11.04 upgrade. In 10.10, I was able to read HDA just fine. However after the upgrade, I can no longer mount this drive. When mounting from file browser:
Code:
Error mounting: mount: wrong fs type, bad option, bad superblock on /dev/sda,missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so The end of dmesg said the following:
Code:
dmesg | tail
[ 82.130904] EXT4-fs (sda): bad geometry: block count 122096646 exceeds size of device (122096381 blocks)
my hard disk has a block count greater than the size of my device. I've done my background searching on this and tried a command line utility I've never heard of before:
Code:
# sudo e2fsck /dev/sda
e2fsck 1.41.14 (22-Dec-2010)
The filesystem size (according to the superblock) is 122096646 blocks
The physical size of the device is 122096381 blocks
[code]....
this is as far as I've gotten. This drive holds over a decade's worth of work for me and is extremely valuable. I really didn't think that the Ubuntu upgrade process would mess with this drive, seeing as the Ubuntu install was contained on an entirely different drive. What is it that I need to do to restore my drive to working status?
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May 14, 2010
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?
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Jul 1, 2010
When we copy a sector to a file like using dd command, the data in the file is of which format? and of which type of conversion is nesessary to see the data in read able formate. i have tryed the ASCII conversion in dd command but still the data is in un-readable format. and also tell that if i access hard disk sector's data using c language program and copy data to a file then which type of conversion should i do ?
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May 30, 2011
I was dual booting Ubuntu 8.10 and Windows Vista on a Acer Aspire 5920. My laptop went for service and the company said they will give me a fresh laptop instead of the one I am using now for they cannot set it right.
When I plugged in my hard disk through an external cable onto a windows machine it detected only the data present (which is almost negligible in my case) in the vista partition. I would like to transfer all the data I have from hard disk at least the one in the Ubuntu 8.10 to my new laptop on which I plan to run Ubuntu. Can someone guide me on how to go about doing it? Also is it possible to transfer all the installed softwares so that they start running in the new laptop without any extra effort?
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Jun 9, 2010
My OS hard drive crashed on my file server. and now I am trying to "restore" my drives.
I am having problems re-creating without erasing data my Linux LVM drive. I would like some instructions on how to re-create my logicalVolumeGroups and phisical groups so I can re-mount my Linux LVM partition.
Here is my specific information.
when I do a pvdisplay I only get my boot vg_files group listed
pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name vg_files
PV Size 74.33 GB / not usable 577.00 KB
Allocatable yes (but full)
[Code]...
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Jul 16, 2010
I learned a couple of days ago why you should do regular backups. Left my laptop working for the day in hot weather. When I came back it had crashed. On reboot it no longer booted up. I could still access the BIOS and boot from alternative media but not from the hard drive. The laptop tried to access the hard disk for a couple of minutes (hard drive light was blinking) and then failed. I made an ubuntu live usb stick and am currently working from there, trying to access my hard drive so I could image my data on another disk before sending the laptop for repairs. All my data is on that disk including my passwords and the password for this site conveniently so I had to register a new account to post this thread.
The laptop is IBM Thinkpad X41. The hard drive is accessed during when boot options are presented, again when the live cd boots up and determines the hardware available and also when manually probing for hard disks using the script below. The hard disk however does not show up in dev. If I could get so far to get it there, I could use dd_rescue to image it away. My hope lies in that the drive still spins up and is accessed producing error messages, however indicating that the system still knows it exists. Excerpt from dmesg concerning the drive:
[Code].....
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Oct 21, 2010
I'm using windows 7 now and I want to install ubuntu as the main OS to the current C:drive(which has installed windows currently) but with keeping the data in other ntfs drivers(D:, E:, F: ) on my hard disk. I can't take backups of all data in other drivers and if that data erased with ubuntu installation I will face a very big problem in future. So how to install ubuntu 10.10 only for a one drive(c: drive) without erasing the data on other ntfs drivers? and I uses nvidia 8 series graphic card and are there any special things to follow to install it's official linux drivers(.run) or is it enough to use default drivers on ubuntu.
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Jul 1, 2010
I am student of MCS and working on final project. I am the user of windows xp. I am new in Linux. I am working on a project that titles "Hard disk data Recovery of ext2 and ext3 in linux". In windows, including dos.h and bios.h header files in program of c language I can send interrupt to bios and access most of the devices like parallel port, hard disks etc. But problem is that there is no bios.h and dos.h files in gcc. Now how can I access my hard drive using c program. How can I call int13h interrupt in linux or there is any other function in the linux to access the hard disk. In fact I want to access sectors of my hard disk using c language program. How can I do it?
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Sep 29, 2010
My primary drive is 250GB and has the root, home and var (I'd read it's good to put var on a separate partition for MythTV which I'm planning on doing) on separate partitions. I have a second 1TB drive that I'll be using to backup the 250GB drive and also host less critical data. I've created two partitions on this drive, one 250GB and the other covering the rest of the drive. I'd like to move the Videos directory out of Home on the 250GB onto the 1TB drive but can't find a definitive way of doing this. Should I just follow this guide for moving the home folder to a new partition? Next question is when performing a backup of the 250GB drive how do I make sure it's going to the 250GB partition on the 1TB drive? Can the different partitions be mounted separately?
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Aug 17, 2009
I have never used Linux before and know nothing about it . But my cousin installed a Fedoro linux CD on my laptop which previously had Lotus symphony . Unfortunately my laptop had single partition and so Linux overrode the old OS ,ie lotus symphony .
I have some critical data on my hard disk but I have no clue how to take backup this data using Linux . I desparately need this data .
Could somebody let me know how I can access this data and take the backup ?
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Dec 19, 2010
How to scan and fix Bad Sectors on Hard Disk without damaging data?
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Oct 11, 2010
Last time I installed Ubuntu in a dualboot configuration with Win7 on one of my machines, my entire boot sector and Windows install got corrupted, resulting in a complete loss of all my data and requiring a fresh install of Windows.
I looked into this a bit after the fact, and it seemed to me it was due to conflicting hard disk geometry between Linux and Windows.
My question is, how likely is this to happen with Fedora? Is this because of Ubuntu? A bad install? Is there someway I can avoid this from happening when I install Fedora if it will happen?
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Jul 2, 2010
How to install openSUSE with Ubuntu in dualboot? I have Ubuntu 10.04 and i want to install openSUSE 11.2 without losing any data on hard disk.
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Feb 21, 2016
I am running Debian testing (amd64, xfce) on my box where I have two sata hard disks.
I do not have any raid or fancy stuff; all the OS is on one hard disk and the second is mounted on boot and accessible as simple extra storage that I use for some backups.
Today, for the first time, I started to get some messages during the boot about some process (EMASK and DRDY) on my second hard disk.
The system boots, but I cannot access any more the 3 TB volume which is my second hard hard disk.
I do not know if it is a software of hardware problem (the hard disk are not old at all), so...where should I start from?
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Jan 5, 2011
I'm running SUSE 11.3 on hard disk (a). I have a second hard disk (b) which has FreeBSD loaded and would like to copy all that info onto (a), then reformat (b).
How do I mount hard disk (b) to achieve my objective?
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Jul 5, 2011
I've used YAST to include a USB hard disk in the export list and mount it to remote machine with NFS. That worked first time the disk was mounted. On the next reboot I saw that the USB disk was mounted again in "/media" but in new folder and its previous folder existed but empty and was mounted with nfs. It seems that first nfs comes mounted in booting time and then USB gets mounted after logging as a user. USB hard disk finds its folder occupied and automatically creates new folder in "/media". What should be done in order to USB hard disk and nfs to be mounted in the same point automatically on the boot ? The second question : When I mount an external disk to be accessible remotely with nfs I get refused to unmount the disk as a USB device. Is it possible to be unmounted as a USB disk done without unmounting it as a nfs as well?
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Jan 10, 2010
I've had this external drive for ages, it contains all my music and pictures that I generally share on my network to my family etc... It has been working for years on Ubuntu until the other month I updated to 9.10 and now it will not mount. It still works on my EEE PC, I plug the USB in and up it pops as usual, however, I can't get it to work on Ubuntu 9.10
[Code]....
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Mar 5, 2010
On my embedded linux box, running on Linux Kernel 2.6.9 embedded with BusyBox utilities.
An Objective are follow:
1/ To figure out how many partitions are on the hard disk
2/ Create a extra partition about 10GB size on the hard disk
3/ Format the partition and mount var on that partition
Only utility to perform above operations I have "sfdisk" utility from BusyBox collection. Which get installed at the time of image flash in to ROM (8mb ROM size). The following is the root directory structure where hdd as a directory mounted /mnt/hdd1
Code:
~ > ls
bin etc lib proc sbin sys var
dev hdd mnt root share tmp var_init
Within /bin sfdisk utility can be used which I tried but no avail.
Code:
~ > sfdisk -l /dev/hda
/dev/hda: No such file or directory
sfdisk: cannot open /dev/hda for reading
~ > sfdisk -l /dev/sda0
/dev/sda0: No such file or directory .....
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Nov 1, 2010
I accidentally formatted a 2TB drive of mine (big oops), but have recovered 2 of the 3 partitions using testdisk. My third partition is a LUKS encrypted partition. Testdisk managed to recover a piece of it, but it won't mount as most of it is unallocated. The partition originally occupied all space from sector 2,930,272,065 to the end of the disk -- sector 3,907,024,064. That is about 473 GBs. Currently, the partition only uses space from sector 2,930,272,065 to 2,930,288,129, about 7.84 MB.
The rest of the space is unallocated. Now what I need to do, is to expand the partition so that it occupies all the space that it used to. How would I do this? I cannot resize the partition, cause it would try to recreate the filesystem AFAIK and I don't want that, as it will fry my data. My data is not terribly important, but I would rather have it then not. I attached a screenie of kpartitionmanager. The partition in question is /dev/sdb2.
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