I'm trying to install Ubuntu 12.10 alongside Windows 7 on my ASUS laptop and I'm new to all of this.
I'm using the Ubuntu 12.10 64-bit ISO burned onto a CD.
The first time I tried to install it, Ubuntu said it did not detect any other OS, which meant I only had 4 options:
- Erase disk and install Ubuntu (I don't want to do this)
- Encrypt new Ubuntu.
- Use LVM.
- Something else.
If I choose the
Something else option, it brings me to the partition menu and says that I have 1 disk with free space of
750516Mb (750Gb), but that's not true because I have Windows 7.
I've already read through several questions and people have mentioned that you could only have 4 primary partitions. So I got hold of partition magic and removed my
E:, leaving me with primary
C: partition and
System reserved partition and a lot of unallocated space.
I restarted the laptop several times and booted the CD again and I got exactly the same as I did previously.
How do fix this problem and install Ubuntu alongside Windows 7?
Here are my results for
sudo fdisk -l; echo; sudo parted -l; echo; mount; echo; df -h
WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sda: 750.2 GB, 750156374016 bytes 255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x90050371 Device Boot Start End Blocks Id System /dev/sda1 * 2048 206847 102400 7 HPFS/NTFS/exFAT /dev/sda2 206848 146368214 73080683+ 7 HPFS/NTFS/exFAT Warning: /dev/sda contains GPT signatures, indicating that it has a GPT table. However, it does not have a valid fake msdos partition table, as it should. Perhaps it was corrupted -- possibly by a program that doesn't understand GPT partition tables. Or perhaps you deleted the GPT table, and are now using an msdos partition table. Is this a GPT partition table? Yes/No?
After selecting YES
Yes/No? yes Error: The backup GPT table is corrupt, but the primary appears OK, so that will be used. OK/Cancel?