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I am not able to boot Ubuntu. I am facing four problems in serial and I am stating each one below:

1) When I switch on my computer the Ubuntu boots than at starting it says:

the disk drive for /boot/uboot is not ready yet or not present
wait or press S to skip or M to add manually.

2) After pressing S then I go to login, then after login using my password, my home screen pops a message:

could not update ICEauthority file. /home/
user/.ICEauthority

3) Then I press enter, then again an error message pops saying:

There is a problem with the configuration server. (/usr/lib/libgconf
2-4/ifconf-sanity-check
-2 exited with status 256)

4) Then after pressing Enter, I get another error message

Nautilus could not create the following required
folders:/home/user/Desktop, /home/user/.nautilus

These are the four problems that I am getting. Please do help me. I also saw some solutions on the Net and tried them but I am not able to solve them so thought that it is better to ask at this forum, waiting for your valuable response.

The solutions that I tried so far from the text console with Ctrl+Alt+F1:

sudo chmod 755/etc/gconf/gconf.xml.system
mkdir -p /etc/gconf/gconf.xml.system
chmod 755 /etc/gconf/gconf.xml.system
su root 
chmod 777 /tmp
chmod 777 /tmp/*
reboot

What's wrong with my system?

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closed as not a real question by mikewhatever, SirCharlo, Tom Brossman, Mitch, fossfreedom Sep 8 '12 at 22:21

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

1  
Please post the output of the following commands after you have started your text console: ls -l /home, mount, sudo gdisk -l /dev/sda. It might be helpful to know more about what procedure you followed to create your Ubuntu system. –  John S Gruber Sep 7 '12 at 18:29
    
for ls -l /home the output is total 0. for sudo gdisk -l the output is gdisk command not found. for mount the output is /dev/sda on / type ext4 none on /proc type none on /sys type none on /sys/kernel/debug type none on /sys/fs/fuse/connection type none on /sys/kernel/debug type none on /sys/kernel/security type none on /dev type none on /dev/pts type none on /dev/shm type none on /var/run type none on /var/lock type none on /lib/init/rw type /scratchbox on /scratchbox/user/megharaj/scarchbox type name same for tmp,proc,dev,dev/pts, dev/shm,sys –  A G Megharaj Sep 11 '12 at 12:39
    
It appears that your system's /home directory tree is missing. Either it got erased; or if this is a brand new install, the install went bad; or you set up your system to have a separate partition for /home and something happened to that partition or it can no longer be found for some reason. If you want to pursue it further I suggest that you ask the question "What happened to my /home directory", give details about how you set it up and what its history is, and if you might have set up a separate /home partition, include the output of sudo fdisk -l /dev/sda and contents of /etc/fstab. –  John S Gruber Sep 11 '12 at 16:34
    
@john thanks for the replay.. the problem was " you set up your system to have a separate partition for /home and something happened to that partition or it can no longer be found for some reason" you are right –  A G Megharaj Sep 14 '12 at 6:39

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