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I installed Ubuntu 12.04 Desktop (32 Bit, i386) on the second hard disk of a PC using a CD-ROM. The first drive contains Windows XP. It's rather old hardware but the installation apparently worked fine.

After reboot there is no daul boot screen and I am unable to start the new Ubuntu installation.

What went wrong and what can I do to fix it?

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To what HDD did you install the Grub bootloader? sda or sdb ? – Prasad RD Jul 30 '12 at 14:57

You will have to alter the boot order of your computer. Open the BIOS configuration and set the second hard disk as the primary boot device.

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Hi, does that mean,, that I can only boot either Windows or Ubuntu? Martin – Martin Jul 30 '12 at 14:57
No, as your GRUB menu will also include an entry to boot Windows. – Cumulus007 Jul 30 '12 at 14:59
Hi, I think, Grub was not installed at all! Martin – Martin Jul 30 '12 at 15:02
Try @Cumulus007's suggestion and make the second hard drive (that has Ubuntu) the primary boot device. If grub is installed there, it will give you the choice to boot Ubuntu or Windows (from the first drive). If it boots straight to Ubuntu let us know. – user68186 Jul 30 '12 at 15:07
Or if just booting of the second drive explicitly works, once you're in you can install grub on the other, and leave bios alone. – Jon Hanna Jul 30 '12 at 15:12

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