problem with sata3 and usb3.0

In BIOS boot order, did you set external USB/SATA3 media before internal drive ?

I didn't do any thing in BIOS, but when i tried to install windows it worked without any problem.

Is Ubuntu yet installed on external disk ?
Did you installed Grub MBR on internal or external drive ?

When i installed it in external drive it worked fine with usb2.0 but not with usb3.0
and the same with internal drive.

Hi :)

Please could you boot up from the Ubuntu Cd? Choose the "Try Ubuntu" option this time and it should get you to a working desktop. We call this a "LiveCd" even if you use a Usb-stick to get there
https://help.ubuntu.com/community/LiveCD
Alternatively if you already have Ubuntu open then just use that.

Get to the top taskbar and click on

Applications - Accesssories - Terminal

and try use the mouse right-click menus to copy&paste the output of this command into here

sudo fdisk -l

where "-L" is a lower-case "-L"
Good luck and regards from
Tom :)

If it works fine with usb2.0 and not with usb3.0, it could means Grub2 has issue with new USB protocol.
Tom's idea is good, as booting from Ubuntu CD/USB stick with a Live session, will allow us to test detection of external hard disk on bus.
Try "sudo fdisk -l" with USB 2.0 / USB 3.0 / SATA 3.0, so we will see if both kernel and udev are able to detect external disk.
Could you also check in motherboard documentation, if BIOS is able to boot from USB 3.0 and SATA 3.0 (are these ports on motherboard or on a PCI card).

this is what i got:

ubuntu@ubuntu:~$ sudo fdisk -l

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x44fdfe06

   Device Boot Start End Blocks Id System
/dev/sda1 1 60801 488384001 7 HPFS/NTFS
ubuntu@ubuntu:~$

these ports are on motherboard

note:
linux can read the ports but can't boot from it.

Hi :)

We can see that LiveCd works, which is good to know. Unfortunately it seems that linux is only seeing an internal 500Gb hard-drive which is presumably not your sata3 one? It looks as though linux has not been installed to this machine at all. Would it be possible to install Ubuntu onto the 500Gb drive as a dual/multi-boot? At the moment there only appears to be a Windows and anything we do from the LiveCd tends to get forgotten when you reboot. Installing to the 500Gb would allow you to install other programs which might help.

If fdisk cannot see the other drives then it is unlikely they appear in the "Places" menu but if they do then that might make things easier. Fdisk tends to be about the strongest program for seeing all kinds of drives. I am not sure how to progress with this if the drives are not being shown by fdisk but there are other people that have better idea of how to mount drives that are being awkward. Try this on the command-line
mount -h
to get a quick guide on how to use this command.
man 8 mount
gives more detailed information but as i said there are hopefully other people that would have a better idea of how to help you.

Good luck and regards from
Tom :)