purging MBR

purging MBR

Post by Yette » Wed, 26 Mar 1997 04:00:00



I recently deleted FreeBSD 2.1.5 from my system because I needed to
re-install it, and doing the re-install OVER the previous install didn't
work right.  However, since in the first installation I installed the
FreeBSD boot manager, I appear to be stuck with said boot manager.  Is
there any way I can erase the boot manager from my MBR without doing a
low-level format or anything * like that?

                                        --Danger Mouse
                                        KNOWLEDGE IS POWER

 
 
 

purging MBR

Post by Rob » Thu, 27 Mar 1997 04:00:00



> I recently deleted FreeBSD 2.1.5 from my system because I needed to
> re-install it, and doing the re-install OVER the previous install didn't
> work right.  However, since in the first installation I installed the
> FreeBSD boot manager, I appear to be stuck with said boot manager.  Is
> there any way I can erase the boot manager from my MBR without doing a
> low-level format or anything * like that?

>                                    --Danger Mouse
>                                    KNOWLEDGE IS POWER

If you got a dos partition, or a dos disk with msdos fdisk on it you might
want to try a:\fdisk /mbr which will restore the master boot record, then
from their you can do your stuff. Or you might be able to just set a diff
boot manager as bootable using fdisk (dos or freebsd's) ie the partiton
that the boot manager is in.


-oOOo----()-----Oooo-------------------
= Things come to those who can't wait =

---------------------------------------

 
 
 

purging MBR

Post by Michael Hugh » Thu, 27 Mar 1997 04:00:00




Quote:> I recently deleted FreeBSD 2.1.5 from my system because I needed to
> re-install it, and doing the re-install OVER the previous install didn't
> work right.  However, since in the first installation I installed the
> FreeBSD boot manager, I appear to be stuck with said boot manager.  Is
> there any way I can erase the boot manager from my MBR without doing a
> low-level format or anything * like that?

>                                    --Danger Mouse
>                                    KNOWLEDGE IS POWER

  fdisk /mbr
--
-------------------------------------------------------------------------------
 _ _ _                    _    _    ,                    Loghome living is the
' ) ) )      /           //   ' )  /         /                          best !
 / / / o _. /_  __.  _  //     /--/ . . _,  /_  _  _                          
/ ' (_<_(__/ /_(_/|_</_</_    /  (_(_/_(_)_/ /_</_/_)_                        
Bridge Information Systems, Inc.        /|                                    

-------------------------------------------------------------------------------
 
 
 

purging MBR

Post by Nabil Hassan Mustaf » Fri, 28 Mar 1997 04:00:00


Boot from a DOS floppy, and use the command "fdisk /mbr". This will
restore the previous master boot record.

Nabil Hassan Mustafa

 
 
 

1. Questions on MSDOS MBR and FDISK /MBR.

Are all MSDOS MBRs created equal?  That is, on a typical PC harddisks,
and excluding the partition table portion, are the MBRs on hda and hdb
the same?  Are MBRs made with all MSDOS versions the same.

Does "FDISK /MBR" change the partition table part of the MBR?  How
would it know what to change it to?  Defaults? (Horrors!)

If I don't have an MSDOS fdisk program (my DOS has something called
part with no /MBR and which has trashed things before), and I didn't
have LILO make me a backup copy when I installed LILO as the MBR, but
I do have one hanging around from I-don't-know-where-or-when, can I
use it to replace LILO's version?  What else could I do?

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