Ubuntu Installation :: External Harddisk Is Not Mounted - Not Visible?

Apr 7, 2010

I use dual booting, vista ubuntu 9.10. I have just bought a new 1T external harddisk i have used it on windows to backup some files. Now I want to backup some documents in ubuntu, but the harddisk is not visible, I can't see it, ok I think the term in Linux is that it is not mounted. Is there something else one should do ?

Disk /dev/sda: 640.1 GB, 640135028736 bytes
255 heads, 63 sectors/track, 77825 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xf959a599

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Ubuntu Installation :: USB Keys Or External Harddisk Can Not Be Mounted?

Apr 8, 2010

I tough that my computer could not mount external harddisk.Here is my mail about that subject.I use dual booting, vista ubuntu 9.10.I have just bought a new 1T external harddisk i have used it on windows to backup some files.Now I want to backup some documents in ubuntu, but the harddisk is not visible, I can't see it, ok I think the term in Linux is that it is not mounted..Disk /dev/sda: 640.1 GB, 640135028736 bytes255 heads, 63 sectors/track, 77825 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesDisk identifier: 0xf959a599

Device Boot Start End Blocks Id System
/dev/sda1 1 1176 9437184 27 Unknown
/dev/sda2 * 1176 52188 409761792 7 HPFS/NTFS
/dev/sda3 52188 77826 205930496 7 HPFS/NTFS

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In my fstab I have this entry to connect to my NAS box:

Code:
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Feb 2, 2010

I've right now installed Fedora 12 in my laptop, and when I try to acces my external USB Woxter HardDisk I get this error:

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or it was not setup correctly (e.g. by not using mdadm --build ...),

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As part of our work, i need some files and installers (Linux compatible) from an External Harddisk.
When i tried to mount the harddisk, found ntfs module is missing.
Could please help to continue with LiveCD.

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Jan 30, 2010

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May 18, 2010

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I have an old external 20GB HD formatted with NTFS. It used to be able to mount in Ubuntu just fine. One day I copied a huge file into it, then suddenly it failed to mount. nitially the message was something like the following:

Code:
Error mounting: mount exited with exit code 13: ntfs_attr_pread_i: ntfs_pread failed: Input/output error

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Jun 18, 2011

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Alternative I have mounted both disks and via another linux partition I have used:
cp -rvbdR /source/* /target

both methodes worked with ubuntu 32 bit. With 64 bit ubuntu I can NOT get it to work. error message after booting the clone: /var/lib/gdm/.ICEauthoriy ..

I can see that /source/var/lib/gdm has different rights as /target - will be part of the problem.
This did not happen with the 32 bit ubuntu - but why ?

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Feb 23, 2010

I've got an external HDD from Iomega that I've been using for over a year and lately it's been doing this thing where it suddenly changes from /dev/sdg to /dev/sdh while the partition on it is still mounted, seemingly at random. I'm often (not always) able to look at the contents of the partition, but it gives me I/O errors followed by a list of files and directories.

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Code:
sd 5:0:0:0: [sdg] 976773168 512-byte hardware sectors: (500 GB/465 GiB)
sd 5:0:0:0: [sdg] Write Protect is off
sd 5:0:0:0: [sdg] Mode Sense: 34 00 00 00
sd 5:0:0:0: [sdg] Assuming drive cache: write through

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May 14, 2011

My external hard drive randomly unmounts in the middle of file transfers.

The system is Debian Wheezy with sda as single-partition ext4. I have an INEO I-NA212-J USB 2.0 enclosure with 2xHDD single-partition ext2 which are recognized as sdb & sdc.

When files are transferred from the external to sda, the system will unmount the external drive at random times. When that happens, "fdisk -l" no longer reports sdb & sdc, but does show the drives as sdd & sde and they can be mounted. I have to reboot the machine to have it see the drives as sdb & sdc again.

When transferring from sda to the external, the unmounting is less frequent but I get file corruption. For example, a large directory seemed to transfer successfully, but the result showed as a single executable file and the displayed file properties were just long strings of numbers. Deleting the file did not reclaim the space.

There seems to be no pattern to the failure. I have checked for file size, number of files, system uptime, transfer time, etc. I have so far not seen it happen while there is no activity. The problem is the same whether there are 1 or 2 drives in the enclosure. However, I have used USB thumb drives and microdrives (both vfat) without problems.

For mounting, I have tried both "mount" and "pmount", and for file management both Xfe and Midnight Commander.

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Mar 7, 2010

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Dec 23, 2010

I'm running a cron job every night to dump a MySQL database to an external hard drive. It works, however when I check on it the following morning the external is no longer mounted and the XFS log file is corrupted. If I run

Code:
xfs_repair -L /dev/sdf1
It works, but then I get these issues:
Code:
XFS: Filesystem sdf1 has duplicate UUID - can't mount
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Sep 8, 2010

1) Environment:
Ubuntu 10.04

2) Phenomenon:
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I have a "not good" habit: I'd love to upgrade whatever suggested by Ubuntu upgrading center every morning.
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My question is:
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Jan 23, 2010

The /mnt/ext is mounted to an ext2 filesystem, an external hard drive. For some reason I can't run scripts from there. Please see the session below.

luntain@plato /mnt/ext $ echo "echo success" > k.sh
luntain@plato /mnt/ext $ chmod 777 k.sh
luntain@plato /mnt/ext $ ./k.sh

[code]....

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Mar 16, 2011

I administer a remote server via SSH that runs CentOS 5.5. I have been unsuccessful in all my attempts to write to two different external USB hard drives with a single ext3 partition when logged in as root.

When attempting to create a "test" directory I get one of two messages:

Quote:

Both drives *appear* to have filesystem issues. When I run an fsck on either drive, I get:

Quote:

Keep in mind this is a newly-formatted, empty drive.

Not putting stock in the odds that I've had two hard drives (different sizes and brands) with the exact same hardware problem, I'm going to assume this is a software issue, although maybe it isn't. Hence, my post in "Linux - General". I've heard talk elsewhere of controller (chipset) issues coming into play. Is this valid?

Okay, here's the information you'll need to make a diagnosis....

Here's the output of a "df -h" command:

Quote:

Here's the contents of my /etc/fstab:


Quote:

Here's the output of "cat /etc/mtab":

Quote:

Here's the output of a mount command:

Quote:

Here's the output of fdisk on the device in question:

Quote:

The number of cylinders for this disk is set to 48641.

There is nothing wrong with that, but this is larger than 1024, and could in certain setups cause problems with:

1) software that runs at boot time (e.g., old versions of LILO)

2) booting and partitioning software from other OSs (e.g., DOS FDISK, OS/2 FDISK)

Command (m for help):

I've got someone with access to the box if necessary. But it might take days to implement solutions since this isn't his full-time job. Remote solutions are, therefore, preferable.

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Jun 5, 2010

[openSUSE 11.1, kernel 2.6.27.45-0.1-Default, Gnome 2.26.3] I have a problem where I have an external USB drive which mounts at boot, with /home aboard it along with several data-only partitions, and if I try to add another USB drive *after* boot, the system changes the device IDs previously given to the original drive. The already running sdb now becomes sdc. If a user or processes are attached to /home when this occurs they are left in the twilight zone and stuff starts crashing. An added weirdness is the newly added drive isn't stealing the sdb ID, the added drive becomes sdd instead, and nothing at all is left at the sdb ID.

Note:

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Nov 14, 2009

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Feb 20, 2010

When I plug in my external USB Hard drive which is formatted as a single NTFS partition, it is recognized and mounted automatically, a nautilus window pops open. Unfortunately it is not writable. The reason is: the partition is mounted "ntfs" (which lacks write support) instead of "ntfs-3g". This is the output of mount after plugging in the drive:

$ mount | grep sdc1
/dev/sdc1 on /media/4EBC5FB82435B0EE type ntfs (rw,nosuid,nodev,uhelper=devkit,uid=1000,gid=1000,dmask=0077)

I want this partition to be writable by just plugging it in.

The partition should not have any errors because a) I fsck'ed it windows and b) mounting it manually works:

$ sudo mount -t ntfs-3g /dev/sdc1 /media/disk_/
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/dev/sdc1 on /media/disk_ type fuseblk (rw,allow_other,blksize=4096)
$ devkit-disks --mount-fstype ntfs-3g --mount /dev/sdc1
Mounted /org/freedesktop/DeviceKit/Disks/devices/sdc1 at /media/4EBC5FB82435B0EE
$ mount | grep sdc1
/dev/sdc1 on /media/4EBC5FB82435B0EE type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096)
$ gnome-mount -nbtd /dev/sdc1
$ mount | grep sdc1
/dev/sdc1 on /media/disk type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096)

How can I get ntfs drives to be mounted as writable by default, preferrably without having to modify fstab?

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Jan 26, 2011

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Jun 3, 2011

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Code:
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Jan 20, 2011

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My current plan so I won't have to reinstall my system is booting from a Ubuntu CD (or USB stick, whatever) and doing

Code:
dd if=/dev/sda of=/dev/sdb

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Now my questions:

1. Is this going to work? Is it a bad idea?

2. Should I use any parameters for dd, for performance? Like setting bs (or something) to a bit smaller than the both HDD's (equal) cache size?

If that matters, the hdd contains both NTFS, ext3/4 and reiserfs partitions. I use grub to boot Ubuntu, WinXP and Win7.

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