On Thu, 15 Feb 2007, John Brewer wrote:

Does this tool support a function like a /mbr in old dos fdisk?

fdisk(1M):

DESCRIPTION
     This command is used to do the following:
[ ... ]
       o  Install the master boot record that is put in the first
          sector of the fixed disk on x86 systems only
[ ... ]

     -b master_boot

         Specify the file master_boot as the master boot program.
         The      default      master     boot     program     is
         /usr/lib/fs/ufs/mboot.
[ ... ]
     -n

         Don't update fdisk table unless explicitly specified  by
         another  option.  If  no other options are used, -n will
         only write the master boot record to the disk. In  addi-
         tion,  note  that  fdisk will not come up in interactive
         mode if the -n option is specified.

Hence: "fdisk -n /dev/dsk/....." should do what you want.

The standard bootblock, even though it is named /usr/lib/fs/ufs/mboot, just boots the "active" partition, as does the MSDOS/Windows one (the 'ufs' is a misnomer it doesn't look for that). You may need to set the partition you wish to boot to 'active', though.

Why do you need a new MBR ? Doesn't grub do the job ? In what way does it fail ?


FrankH.




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