Repair Samsung NC10 MBR

I removed Ubuntu from a Samsung NC10 yesterday, now the F4 recovery option doesn’t work. Please excuse the lack of screen shots on this Howto but I couldn’t think how to capture from the recovery manager and camera shots look rubbish.

It would appear that Samsung uses a custom Master Boot Record (MBR) – so for Grub all is well because you can choose to boot into the recovery partition and away you go. However if you have followed any of the usual guides to removing grub (such as running an XP CD to a recovery console and typing fixmbr) F4 will not launch the restore tool.

System Rescue CD is a great tool to have handy on a USB key. You can, so booting into it run this command:

fdisk /dev/sda

Now pressing “p” should show you that the recovery partition is 1, so type “a” then “2”, “a” then “1” to make it bootable. Now write the partition table by typing “w” then reboot. At this point you will boot into the recovery manager and be able to recover but the F4 key will not still not be available at boot and of course trying to create a backup will not work either (as Windows will be booted on restart).

Once Samsung Recovery Manager III has loaded up, press Ctrl+Alt+F10 – I had no idea there was a management mode until I read this page (French) but be aware its only available from the recovery partition. It asks for a password – “secos” (without the quotes). Once in management mode, click the “Image” tab and select “Export” then “Select Location”, I used “D:”. Click “Start” and accept the dialogue box that comes up. This is a backup of the recovery partition.

Once this stage is finished, select the “Tools” tab, insert a spare USB stick and click “Admin Tool USB”. It will format the USB stick and then install some utilities. It takes a couple of minutes. Once finished click the close button in the top right and it’ll ask if the computer should be turned off – say yes.

Boot with the USB key we just made, bringing you to a completely different recovery menu. Click “MBR Fix” and then close the application.

Now when you reboot you’ll notice that the MBR has been repaired and F4 once again boots into Recovery Manager III.