"Martin F. Krafft" wrote: > > also sprach Joerg Johannes (on Sun, 01 Jul 2001 02:09:49PM +0200): > > 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? > > yes. > > > 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 > > why count=2 when writing back? count=1 should do. >
OOPS, typo, should not happen when really doing it... > > Will this be enough to get lilo back after windos new install? > > why not just rerun lilo? Good idea, but would need rescue disc wiht xfs-enabled kernel for it, so this one must do it > > > 3.) During all this dd'ing, /dev/sda must be *completely* unmounted? > > no, /dev/sda1 *should* be unmounted while dd'ing over it. but since > you are writing 0's, there's not much else that can break if you'd > leave it mounted. but sure, unmount the entire thing! > > martin; (greetings from the heart of the sun.) > \____ echo mailto: !#^."<*>"|tr "<*> mailto:"; [EMAIL PROTECTED]
