Why Is the Installer Not Showing Any Partitions in Ubuntu?

partitioningsystem-installation

I’m having a problem installing Ubuntu, and Kali as well. I downloaded the iso from the official site & tried installing using USB. I also tried desktop installation, but the problem is same.

It shows a single drive i.e. my total Hard Disk and if I select it, it asks me to create a new partition & shows total space as FREE.

It’s with all Ubuntu I downloaded, 11.10 Server, 12.10 and 13.04. I also tried to install BackTrack’s new version Kali Linux but again I got the same problem.

I hope I meet thier system requirements. Here’s my system details for your ease:

• OS: Windows 7 Ultimate
• Processor: Intel P4 2.80 GHz
• RAM: 3GB
• Hard Disk: 320GB
• No of Local Drives: 4 (1 Primary, 3 Logical)
• Free Space: 195GB (about)
• Motherboard: G31
• Cache: 1MB Help me, please.

Best Answer

This symptom is usually caused by one of two problems:

• Leftover software RAID data — If the disk had been (or is being) used with software RAID, leftover RAID data can confuse the Ubuntu installer. You can usually fix this problem by typing sudo dmraid -E -r /dev/sda; however, you should be very sure that you’re not currently using software RAID. If you erase RAID data when the system is actually using RAID, the result can be problems accessing your disk at all.
• A damaged partition table — The libparted library (upon which the Ubuntu installer relies) is extremely sensitive to partition table problems. If any exist, it usually reports the disk as being empty. My FixParts program (part of the gdisk package in Ubuntu) will correct many of these problems in an automatic or semi-automatic mannger; see its Web page for details. Other problems may require more specialized and manual repairs. If you think this is the source of the problem and if FixParts can’t fix it or if you’re wary of using FixParts, post the output of sudo fdisk -l /dev/sda. (Add four spaces to the beginning of each line of that output to preserve columnar output.)

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