fdisk -l /dev/sda Determine REAL block size. Then use that size for dd.
Some disks are VERY picky about how block zero is written. (One Quantum hard
disks were particularly annoying in this regard.)
Then use dd to blank the first megabyte of the disk, ideally starting at
block 1.
Make sure your BIOS does not have boot protection turned on.
{^_^}
On 2013/01/30 10:11, Raf Roger wrote:
i tried it and still have the windows boot manager when my HDD boot :( instead
of having "system not found" (which is the typicall message when boot sector is
not found in windows)
any other idea than "dd if=/dev/zero of=/dev/sda bs=446 count=1" ? i also tried
with bs=512, but still not successfull :(
On Wed, Jan 30, 2013 at 6:34 PM, Raf Roger <raf.news@xxxxxxxxx
<mailto:raf.news@xxxxxxxxx>> wrote:
Hi Patrick,
in fact i can delete everything on this HDD as i formatted it...backup was
done before :)
i just found also something similar.
|dd if=/dev/zero of=/dev/sda bs=446 count=1|
where /dev/sda should be replaced by my HDD value.
On Wed, Jan 30, 2013 at 6:20 PM, Patrick Lists
<fedora-list@xxxxxxxxxxxxxxxxx <mailto:fedora-list@xxxxxxxxxxxxxxxxx>> wrote:
On 01/30/2013 06:13 PM, Raf Roger wrote:
Hi,
i formatted my HDD where before i had windows 7 installed, in order to
install new fedora 18.
however after fedora installation, HDD does not boot on grub but still
on former windows boot manager.
How ca i do to REALLY remove this stupid windows 7 boot manager ?
thx
http://www.linuxquestions.org/__questions/linux-newbie-8/__using-dd-to-zero-the-mbr-__query-606489/
<http://www.linuxquestions.org/questions/linux-newbie-8/using-dd-to-zero-the-mbr-query-606489/>
Make sure you don't delete data you do not want to lose. You do have a
backup of your important data right?
Regards,
Patrick
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