Partitions and cdrom are not mounted, and the bars are missing in Ubuntu 12.04

Posted by nuit on Ask Ubuntu See other posts from Ask Ubuntu or by nuit
Published on 2012-04-05T15:40:10Z Indexed on 2012/04/05 17:45 UTC
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Provide my spec and sorry for my poor English first.

  • MB: Gigabyte G31M-S2L (bios ver. F9)
  • CPU: intel E5200
  • 2G RAM
  • HD1: WD 160G with 2 partitions (partition 1:60G, NTFS, win xp; partition 2:100G, NTFS)
  • HD2: WD 320G with 2 partitions (partition 3:220G, NTFS; partition 4:100G, ext4, Ubuntu)

Recently, I tried to install Ubuntu 12.04 Beta 2 on my desktop PC (on partition 4).
At the beginning, everything looked great including the auto-mounting of partitions 1~3 and the unity (3D).
However, after I deleted and re-allocated the partitions on HD2 and re-installed Ubuntu on partition 4, the partitions 1~3 are no longer auto-mounted when I logged in the desktop (and even the inserted cdrom would not be mounted either), and the launch bar and menu bar in unity (3D) are missing. The configurations during these two installations are all the same as default.
Are there any possible reasons or solutions for this issue?
Thank you in advance!

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