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Editing MBR

K

kvitale

n00b
Joined
Jan 31, 2005
Messages
3
I have two 2 os's installed on one hard drive accross multiple partitions. At startup however, the OS I last loaded is listed first. I would like to change and make the second option the first OS loaded without having to manually choose the second option. That's annoying, ya know?

Some vague idea pulled from somewhere hints at changing the startup data in the mbr... is this what I need to do? If not, what do I need to do? Thanks...

Kyle
 
unhide files on the system partition
change the attributes to read and write on the boot.ini file
then edit it to change the default boot drive to the other one listed

reboot

you can also alter the timeout to whatever you like
and the description in between the quotes
 
and to clarify the situation
the MBR contains no data on the 2nd OS
it simply points to the boot.ini on the system partition (or more accurately the ntldr)
review > Inside the Boot Process Part 1 & 2

had you installed the new OS as a dual boot to a new HDD instead of on the same HDD
it would actually lack an MBR
thus if the initial HDD where to be removed in this senerio you loose access to the 2nd as well,
(that can be remedied with a fixmbr form an install CD and the Recovery Console)
which is why I crossboot drives in that senerio
removing the first drive and doing a fresh install on the 2nd
then I edit each of the boot.ini adding an entry to point to the other install on the other drive

that way your able to boot to either from either
but which is actually the system partition is dependent on which the BIOS boot order is set to
(of course you get dynamic drive letter assignemnts like that)
 
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