Missing hard drive space

[jdow]

First step I'd make sure the device still mounts on Windows. I believe
you've said they are USB based devices. So make sure you "safely
remove hardware" to dismount the drives before going back to Linux.

If it mounts for Windows and you dismount it properly it should mount
on Linux. That's appararently your FAT based disk. So you should not
try mounting it NTFS. And you are not.

If they are USB devices they may change device numbers depending on
the order in which they are detected or inserted. So labels or UUIDs
are a better approach.

Presuming you are in Linux comment out the lines for the three USB
drives.

Then make sure the disks are "clean" on Windows and dismounted cleanly.

Leave them disconnected and boot Linux.

Now plug in the drive designated as /dev/sdc originally. It's the
400.0 GB drive.

Check that the drive was found using fdisk on /dev/sdb or /dev/sdc
(etc). Once you find it we can start rebuilding fstab, slowly and
methodically.

Presuming that it's /dev/sdb, since it is the only other drive
attached, create a line in /etc/fstab that looks like this:

sudo /dev/sdb1  /media/External/400GB vfat rw,hard,intr    0  0

Create the /media/External/400GB mountpoint directory.
(sudo mkdir /media/External/400GB)

Now we're ready to "sudo mount /dev/sdb1". If that worked we're part
way there. Now unmount it and let's edit the fstab again.
sudo umount /dev/sdb1

You ran vol-id while this drive was drive C - I think. (If you have
been plugging and uplugging the drives the data may be wrong. So
check it again running vol-id against /dev/sdb in this case.)

Edit the line in fstab starting with /dev/sdc1 to change "/dev/sdc1"
to "UUID=17E8-082F".

Now try "sudo mount /media/External/400GB". If that worked you are
nearly home free.

Repeat for mountpoints /media/External/320GB and /media/External/160GB.
Make sure you have the drive UUID's correct and working. Then it will
not matter in which order the drives are discovered on boot up or as
you plug and unplug them. If you plug and unplug with Linux running you
must use "umount" to dismount the drive before unplugging it. And you
may need to use "mount" to mount the drive after plugging it in. If you
plan to have them always present you can change the final zeros on the
fstab lines to 2 and have them mount at boot time.

{^_^}

----- Original Message ----- 
From: "MG" <m.s0128532 at gmail.com>
To: "Ubuntu user technical support,not for general discussions" 
<ubuntu-users at lists.ubuntu.com>
Sent: Monday, 2009/April/20 11:44
Subject: Re: Missing hard drive space


> Some progress, any ideas now?
> Thx!
>
> root at THUNDERCAT1:/home/max# sudo mount -a
> mount: wrong fs type, bad option, bad superblock on /dev/sdc1,
>       missing codepage or helper program, or other error
>       In some cases useful info is found in syslog - try
>       dmesg | tail  or so
>
> $MFTMirr does not match $MFT (record 1).
> Failed to mount '/dev/sdb1': Input/output error
> NTFS is either inconsistent, or you have hardware faults, or you have a
> SoftRAID/FakeRAID hardware. In the first case run chkdsk /f on Windows
> then reboot into Windows TWICE. The usage of the /f parameter is very
> important! If you have SoftRAID/FakeRAID then first you must activate
> it and mount a different device under the /dev/mapper/ directory, (e.g.
> /dev/mapper/nvidia_eahaabcc1). Please see the 'dmraid' documentation
> for the details.
> NTFS signature is missing.
> Failed to mount '/dev/sdd1': Invalid argument
> The device '/dev/sdd1' doesn't have a valid NTFS.
> Maybe you selected the wrong device? Or the whole disk instead of a
> partition (e.g. /dev/hda, not /dev/hda1)? Or the other way around?
> root at THUNDERCAT1:/home/max#
>
> # /etc/fstab: static file system information.
> #
> #  -- This file has been automaticly generated by ntfs-config --
> #
> # <file system> <mount point>   <type>  <options>       <dump>  <pass>
>
> proc /proc proc defaults 0 0
> # Entry for /dev/sda1 :
> UUID=d053ecd0-1482-4cfc-8b34-1d821a41f843 / ext3 
> relatime,errors=remount-ro
> 0 1
> # Entry for /dev/sda5 :
> UUID=8c6a2356-9c6b-4ef1-9b65-8e6edbf76120 none swap sw 0 0
> /dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0
> none       /mnt/ramfs      tmpfs      defaults  0 0
> # Entry for /dev/sdc1 :
> /dev/sdc1       /media/External/usb1      vfat      rw,hard,intr  2 2
> # Entry for /dev/sdb1 :
> /dev/sdb1       /media/External/usb2      ntfs-3g      rw,hard,intr  2 2
> # Entry for /dev/sdd1 :
> /dev/sdd1       /media/External/usb3      ntfs-3g      rw,hard,intr  2 2
>


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