Hello List

1.) Just to be sure:
dd if=/dev/zero of=/dev/sda1
will overwrite any data on sda1 with zeroes, but leave sda2, sda3 and
the mbr untouched?

2.) To backup my mbr I do 
dd if=/dev/sda of=/flopyy/mbr.sda bs=512 count=1
 and to put it back
dd if=/floppy/mbr.sda of=/dev/sda bs=512 count=2

Will this be enough to get lilo back after windos new install?

3.) During all this dd'ing, /dev/sda must be *completely* unmounted?

Thanks 
joerg

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