Ubuntu install on Sony laptop with vista says "This computer has no OS on it"

andrak · 09-24-2009, 04:20 PM

I have resized the partition in vista and created two new partitions. One of 4GB for the swap and the other much larger for Linux. They are not named or formatted. I have a 500 GB HDD (RAID 0 2X250 GB/Go) with Vista home premium installed.

Everything with the installation goes smoothly until I get to the setting up partitions bit and select manual/advanced where I get the message "This computer has no operating system on it"

I want to dual boot vista and linux.

Ubuntu works fine from the CD.

Any suggestions?

yancek · 09-24-2009, 06:06 PM

It would be helpful if you posted partition information. I assume you are trying to install Ubuntu? If the Live CD works, open a terminal and type the command: sudo fdisk -l (lower case Letter L), you may be prompted for a password. Post that info here.

Does vista still boot?

andrak · 09-24-2009, 06:44 PM

This is the response: Unable to seek on /dev/sda

Vista still boots normally and Ubuntu still runs fine from the CD.

bjharker · 09-24-2009, 07:35 PM

My first reaction was to wonder why you used Vista's partitioning tool to resize and setup other partitions. This is bad. Get yourself a copy of GParted, boot it up, wipe everything but the Vista & Vista Recovery partitions, and redo your partition setup. This may help during your Ubuntu installation. Just my 2 cents.