I'm trying to install Ubuntu 12.10 and make a dual-boot scheme with Windows 8. I'm following these instructions.
But the installer doesn't list the partitions (it even shows that dialog to choose between a full-disk install or do the process manually):
But the Ubuntu can see the partitions (and I can mount them in Nautilus):
As you can see, I already resized my main partition to install Ubuntu in that "Free space". Some more outputs to describe better the problem:
ubuntu@ubuntu:~$ sudo fdisk -l WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sda: 1000.2 GB, 1000204886016 bytes 256 heads, 63 sectors/track, 121126 cylinders, total 1953525168 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: 0x84dec887 Device Boot Start End Blocks Id System /dev/sda1 1 4294967295 2147483647+ ee GPT WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sdb: 32.0 GB, 32017047552 bytes 256 heads, 63 sectors/track, 3877 cylinders, total 62533296 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: 0x180cb215 Device Boot Start End Blocks Id System /dev/sdb1 1 4294967295 2147483647+ ee GPT
ubuntu@ubuntu:~$ sudo parted -l Error: The backup GPT table is not at the end of the disk, as it should be. This might mean that another operating system believes the disk is smaller. Fix, by moving the backup to the end (and removing the old backup)? Fix/Ignore/Cancel? C Warning: Unable to open /dev/sr0 read-write (Read-only file system). /dev/sr0 has been opened read-only. Error: Can't have a partition outside the disk!
How can I fix this without harm the Windows installation?
Edit after Rod's answer
I confirm that HPA is disabled.
I don't understand this RAID thing, but my setup has two hard disks, one with 1TB and another one with 32GB SSD. The last is used as a cache. This thing is called
Intel Rapid Storage Technology. As far as I can tell, it "uses" RAID. So I don't want to disable it in Windows. How to proceed?