#title How To Install Ubuntu On A Big Disk ||<
><>|| = Introduction = When you reboot '''after installing Ubuntu on a big disk (>100GB)''', you may get a boot error (eg "GRUB rescue>", or "Error: unknown file system", or "error: Out of disk"). Here is how to solve this problem: = Procedure = == Step 1 - try the Recommended Repair of Boot-Repair == * Boot your computer on a [[UbuntuSecureRemix|Ubuntu-Secure-Remix]] liveCD or liveUSB * choose "Try Ubuntu" * launch [[Boot-Repair]] from the Dash (click the Ubuntu logo in the top-left corner of the screen, then type '''boot''' and click on the '''Boot-Repair''' icon that will appear). * click the '''"Recommended repair"''' button * reboot the computer * '''if you still can't access Ubuntu, go to Step 2 below.''' == Step 2 - try the out-of-disk option == * Boot your computer on a [[UbuntuSecureRemix|Ubuntu-Secure-Remix]] liveCD or liveUSB * choose "Try Ubuntu" * launch [[Boot-Repair]] from the Dash (click the Ubuntu logo in the top-left corner of the screen, then type '''boot''' and click on the '''Boot-Repair''' icon that will appear). * click "Advanced option" * go to the "GRUB options" tab * tick the '''"out-of-disk"''' option * click "Apply" * reboot the computer * '''if you still can't access Ubuntu, go to Step 3 below.''' == Step 3 - Create a separate boot partition == * follow the following procedure: [[BootPartition|HOWTO create a separate /boot partition]]. * reboot the computer. You should now get access to Ubuntu. = Remarks = - '''if you need help''', please create your new own thread [[http://ubuntuforums.org/newthread.php?do=newthread&f=333|here]] (don't forget to indicate the URL you noted on your paper at Step6, this will give valuable information to understand your problem) = External Links = - [[http://ubuntuforums.org/showthread.php?t=2027548|Discussion thread on ubuntuforums for any question/comment about this tutorial]]. (this is not a thread for support)