[ubuntu-uk] dual boot

[Tom Bamford]

norman wrote:
>> MBR, can you post the menu.lst and device.map files the from /boot/grub/
>> directory to the pastebin (or to this list)? Then we can see the current
>> configuration and maybe make suggestions about what needs to be changed.    
> Please explain to this ignorant one what is the MBR and how do things
> get installed there?
>   
Sorry, forgot to mention that the Master Boot Record is a small section 
before any partitions on your disk where the bootloader (Grub) sits. 
Actually Grub is too big for the MBR so only a small piece of Grub is 
stored there - the rest is self-loaded from the files in your /boot/grub 
directory.

You don't write to the MBR like you would a partition, this is taken 
care of by the bootloader install program. If you were installing 
Windows to the same drive as Ubuntu you'd hit problems because Windows 
would rewrite the MBR with its own simpleton loader instead of Grub. 
When you boot from a hard drive, your BIOS tries to execute whatever 
lies in the MBR. If there's no bootloader the BIOS tries to execute the 
very first thing on the 'active' or 'boot' partition.

Tom

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