Possible Duplicate:
How to fix MBR partition prior to Ubuntu Installation? A partition overlaps GPT backup sectors
I just bought a new laptop that comes with Windows 7 preinstalled and I want to install Ubuntu alongside with it.
The system came with 5 partitions:
- System partition
- Unknown partition
- NTFS partition (the one with windows)
- NTFS partition (to be used for data)
- A recovery partition
I had removed the NTFS data partition and shrinked the windows partition to make room for Ubuntu as it will be my main OS.
The problem is that when I boot with the live CD, the installation program does not detect any of the partitions and tries to use the whole disk (/dev/sda) to install Ubuntu.
When I start the Live CD, I can see that gparted does not detect them:
But the disk utility can:
Also, while looking through askubuntu I've found similar questions asked before that did not solve my issue, but I have run the commands suggested with the following output:
ubuntu@ubuntu:~$ sudo fdisk -lu
WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sda: 500.1 GB, 500107862016 bytes
256 heads, 63 sectors/track, 60563 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x2902cc6d
Device Boot Start End Blocks Id System
/dev/sda1 1 4294967295 2147483647+ ee GPT
ubuntu@ubuntu:~$ sudo fixparts /dev/sda
FixParts 0.8.4
Loading MBR data from /dev/sda
This disk appears to be a GPT disk. Use GNU Parted or GPT fdisk on it!
Exiting!
ubuntu@ubuntu:~$ sudo parted -l
Error: Unable to satisfy all constraints on the partition.
Error: /dev/sr0: unrecognised disk label
Does anyone know how can I workaround this?
EDIT: I have added a couple of screenshots so people can see better what the problem is.
Also I have run gdisk as requested by John, here is the output:
ubuntu@ubuntu:~$ sudo gdisk -l
GPT fdisk (gdisk) version 0.8.5
Problem opening -l for reading! Error is 2.
The specified file does not exist!
ubuntu@ubuntu:~$ sudo gdisk /dev/sda
GPT fdisk (gdisk) version 0.8.5
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present
Found valid GPT with protective MBR; using GPT.
Warning! Secondary partition table overlaps the last partition by
33 blocks!
You will need to delete this partition or resize it in another utility.
Command (? for help): p
Disk /dev/sda: 976773168 sectors, 465.8 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 91B5A850-8718-4D8C-AA48-4DA569E5BEAE
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 976773134
Partitions will be aligned on 2048-sector boundaries
Total free space is 716402654 sectors (341.6 GiB)
Number Start (sector) End (sector) Size Code Name
1 2048 411647 200.0 MiB EF00 EFI system partition
2 411648 673791 128.0 MiB 0C01 Microsoft reserved part
3 673792 209174527 99.4 GiB 0700 Basic data partition
4 925575168 976773167 24.4 GiB 2700 Basic data partition
Command (? for help): v
Warning! Secondary partition table overlaps the last partition by
33 blocks!
You will need to delete this partition or resize it in another utility.
Identified 1 problems!
sudo gdisk -land putting the output in your question? gdisk is in the gdisk package along with fixparts, so you probably already have it installed. – John S Gruber Aug 23 '12 at 19:12