Generating new grub table after new installation
On my computer I have the following partitions:
/dev/sda1 * 2048 180410359 90204156 7 HPFS/NTFS/exFAT
/dev/sda2 180410368 262330367 40960000 7 HPFS/NTFS/exFAT
/dev/sda3 262330429 599834969 168752270+ f W95 Ext'd (LBA)
/dev/sda4 599840768 625135615 12647424 7 HPFS/NTFS/exFAT
/dev/sda5 262330431 451089134 94379352 83 Linux
/dev/sda6 451089198 599834969 74372886 83 Linuxsda1 is the Windows Vista partition and is bootable. sda3 is an extended partition containing two Linux partitions: sda5and sda6.
sda5 contains my old Linux installation (Ubuntu 10.04) and sda6 contains my new Linux installation (Ubuntu 12.04). During installation, Ubuntu 12.04 has configured GRUB so that I get all three operating systems in the boot menu, i.e.
Ubuntu 12.04 (/dev/sda6)
Windows Vista (/dev/sda1)
Ubuntu 10.04 (/dev/sda5)After moving all my files to Ubuntu 12.04, I want to format the Ubuntu 10.04 partition /dev/sda5) and use it to store data.
My question is: can I run GRUB again after I have deleted Ubuntu 10.04 to regenerate the boot menu and remove all the Ubuntu 10.04 entries? What is the name of the tool I have to use, in case there is one?
11 Answer
As @bcbc said delete or format the partition but BEFORE rebooting, run sudo update-grub. If you don't you may end up with a Grub rescue prompt.
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