I need some help. During install first steps ubuntu installer stops during HDD detection.(just before he asks about install side by side with win). It is a 750gb seagate with UEFI system and win 7 64 bit, verified ubuntu MD5 and image is correct, trying to install from USB, but as I mentioned Live works fine and everything works can access HDD and partitions no problem. I just cant install as the installer hangs. I have been reading some articles but all mention boot issues and none mention the installer hanging. Anyone has any ideas?
Found a solution credits go to Rod Smith http://askubuntu.com/users/57976/rod-smith Thanks
Your parted output suggests you've got a partition table problem, or at least an issue that libparted (which is used both by the text-mode parted program and the Ubuntu partitioner) is interpreting as a partition table problem. The "Invalid or incomplete multibyte or wide character" message suggests that parted is having problems interpreting the partition name, which is officially a UTF16-encoded name. Unfortunately, the last time I checked, parted didn't do proper UTF-16 encoding or decoding of partition names; instead, it tried to interpret them as a sort of modified ASCII -- or in practice, a modified UTF-8. This could lead to problems if a real UTF-16 partition name used non-ASCII characters, since they might then look like gibberish when interpreted as a modified UTF-8. Since libparted is very sensitive to errors and offers little in the way of corrective tools, the result is an error, as both parted and the Ubuntu installer demonstrate.
If I'm right (and I'm far from certain that I am), you should be able to correct the problem as follows:
If my suspicion is correct, you should now be able to proceed with Ubuntu installation. If I'm correct, this is a libparted bug, which should be reported to Ubuntu and/or to the libparted developers. Recording the names of all your partitions for inclusion in your bug report is worth doing.
As mentioned in my comment, one thing I would try is to modify the boot parameters. I didn't have this problem with 12.04 or 12.10, but for prior versions of Ubuntu I had to add a boot parameter of "pci=nomsi" to get it to find my hard drive (essentially preventing device drivers from generating a Message Singaled Interrupt).
Here is an article that describes how to alter the boot parameters prior to installation. Basically, you'll need to get to the advanced boot menu. From there, pressing F6 (followed by esc to close the pop-up menu) should enable editing of the boot command. Go all the way to the end of the line and add
Try that and post back if it doesn't work. If it doesn't work another thing to try would be to remove dmraid prior to installation, as mentioned in this post: Ubuntu Install Failing- Hard Drive.