Re: [ubuntu-uk] mbr removal command
On 03/12/2007, Colin Watson <[EMAIL PROTECTED]> wrote: > On Sat, Dec 01, 2007 at 03:34:36PM +, norman wrote: > > < snip > > > > It should be sda1 for the first SATA drive and byte size is usually > > > before count. > > > > Now I am puzzled, I always the first drive was xxx0 and not xxx1. Ah > > well, live and learn. Thanks. > > Partition numbers start at 1 under Linux; there are no "xxx0" devices > for disks. You're perhaps thinking of "/dev/sda", which accesses the > whole disk. > ...or the GRUB numbering system, which does start at 0. I believe they've changed this for the next version of GRUB, so it will use the same sda/hda type labels as the Linux kernel uses (but I could be wrong). Cofion, Neil. -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.kubuntu.org/UKTeam/
Re: [ubuntu-uk] mbr removal command
On Sat, Dec 01, 2007 at 03:34:36PM +, norman wrote: > < snip > > > It should be sda1 for the first SATA drive and byte size is usually > > before count. > > Now I am puzzled, I always the first drive was xxx0 and not xxx1. Ah > well, live and learn. Thanks. Partition numbers start at 1 under Linux; there are no "xxx0" devices for disks. You're perhaps thinking of "/dev/sda", which accesses the whole disk. -- Colin Watson [EMAIL PROTECTED] -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.kubuntu.org/UKTeam/
Re: [ubuntu-uk] mbr removal command
> You just substitute "/dev/hda1" for the device you want, but I would > have thought it'd be more like "/dev/sda" if you want to wipe the MBR.. > Also the order of the options to "dd" does not matter. The object is to wipe the MBR and I assume it is the sda part which is relevant in this case. Norman -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.kubuntu.org/UKTeam/
Re: [ubuntu-uk] mbr removal command
norman wrote: > As a result of my research into the complete removal of the MBR I came > across the following command:- > > dd if=/dev/zero of=/dev/hda1 bs=512 count=1 > > I have 2 questions and I would be grateful for answers, please. Firstly, > as I have only one hdd and that is a SATA drive, should I substitute > sda0 for hda1 and, secondly, does it matter which comes first bs=512 or > count=1, I have seen both and so am confused? > > Norman > > > You just substitute "/dev/hda1" for the device you want, but I would have thought it'd be more like "/dev/sda" if you want to wipe the MBR.. Also the order of the options to "dd" does not matter. Terence -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.kubuntu.org/UKTeam/
Re: [ubuntu-uk] mbr removal command
< snip > > > It should be sda1 for the first SATA drive and byte size is usually > before count. Now I am puzzled, I always the first drive was xxx0 and not xxx1. Ah well, live and learn. Thanks. Norman -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.kubuntu.org/UKTeam/
Re: [ubuntu-uk] mbr removal command
Hi Norman, On Sat, 2007-12-01 at 10:51 +, norman wrote: > As a result of my research into the complete removal of the MBR I came > across the following command:- > > dd if=/dev/zero of=/dev/hda1 bs=512 count=1 > > I have 2 questions and I would be grateful for answers, please. Firstly, > as I have only one hdd and that is a SATA drive, should I substitute > sda0 for hda1 and, secondly, does it matter which comes first bs=512 or > count=1, I have seen both and so am confused? It should be sda1 for the first SATA drive and byte size is usually before count. -- Dougie Richardson // [EMAIL PROTECTED] "Stop breathing down my neck!" // blog.lynxworks.eu "My breathing is merely a simulation!" // wiki.lynxworks.eu "So is my neck, stop it anyway!" //gallery.lynxworks.eu -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.kubuntu.org/UKTeam/
Re: [ubuntu-uk] mbr removal command
> You would change hda1 to sda0 I would think bs=512 comes first but don't > know for sure. Thank you. Norman -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.kubuntu.org/UKTeam/
Re: [ubuntu-uk] mbr removal command
You would change hda1 to sda0 I would think bs=512 comes first but don't know for sure. Regards, Daniel -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of norman Sent: 01 December 2007 10:51 To: ubuntu-uk Subject: [ubuntu-uk] mbr removal command As a result of my research into the complete removal of the MBR I came across the following command:- dd if=/dev/zero of=/dev/hda1 bs=512 count=1 I have 2 questions and I would be grateful for answers, please. Firstly, as I have only one hdd and that is a SATA drive, should I substitute sda0 for hda1 and, secondly, does it matter which comes first bs=512 or count=1, I have seen both and so am confused? Norman -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.kubuntu.org/UKTeam/ -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.kubuntu.org/UKTeam/
