RE: [Unattended] howto trash xp
-Original Message- From: Brad Erdman [mailto:[EMAIL PROTECTED] Sent: 18 February 2005 04:48 To: unattended-info@lists.sourceforge.net Subject: RE: [Unattended] howto trash xp What if you just delete boot.ini and ntldr and possibly ntdetect.com? Brad You machine would still try and boot off the HD and fail as the bios will still spot the MBR and then bootstrap it. Mark. -- This e-mail message may contain confidential or privileged information. Recipients are requested to preserve this confidentiality and to advise the sender immediately of any error in transmission. Any views/opinions expressed in this email are that of the author and may not reflect the views of Salamis Group - www.salamisgroup.com --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ unattended-info mailing list unattended-info@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/unattended-info
Re: [Unattended] howto trash xp
hi, On Thu, Feb 17, 2005 at 03:13:51PM -, Mark McRitchie wrote: ...or use boot.ini to start on OS on a separate partition - it need only be small because it would probably only need dos - but that OS would have no qualms about zapping the XP partition. hm, I must have been sleeping or something.. if the problem at hand is just to but kick of unattended from network you could use my solution (which I currently still use to boot ghost) I use grub on all machines with two menu items: ## title HSG dhcp configfile (nd)/grub/menu.lst title Win2K chainloader (hd0,2)+1 ## the second entry is just there in the case of a network failure, or other problems.. then I can change the menu.lst file on the server as needed, for example to default to do a unattended installation. For example: ## title unattended kernel (nd)/unatt/vmlinuz noapic z_user=XXX z_pass=XXX z_path=//192.0.2.8/install initrd (nd)/unatt/initrd ## Note: * grub needs to be compiled with all nececssary network drivers for this to work * worth trying would be bootp --with-configfile instead of just dhcp * pxegrub exists also, so even blank machines could use this * there is a password option in the config file, using which, you can get a different menu after entering a password (so that users can not see options which they should not) I do not yet know a good solution to tell exactly one machine to boot something different exactly one time. Possible attack vectors would be scriptable dhcp daemon, tftp-daemon with support to send a client the output of an executable (cgi-bin like) or hacking grub to do special things. cu maurice --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ unattended-info mailing list unattended-info@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/unattended-info
RE: [Unattended] howto trash xp
What if you just delete boot.ini and ntldr and possibly ntdetect.com? Brad --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95alloc_id396op=click ___ unattended-info mailing list unattended-info@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/unattended-info
Re: [Unattended] howto trash xp
hi, On Tue, Feb 15, 2005 at 05:13:05PM +, Hugo Monteiro wrote: I'd like to know if there's a simple way of trashing a prefectly good installation of XP, in such a way that in the next boot, if the client is configured to boot from the lan, it starts a brand new unattended install. I would guess, to make the disk unbootable in a way the bios can recognize, means overwriting the last to bytes of the MBR which should be 0x55 0xAA with something else. For simplicity for example overwriting the whole MBR. If running linux that would be: # dd if=/dev/zero bs=512 count=1 of=/dev/hda but I do not know how to do this with xp. does someone else know? cu maurice --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ unattended-info mailing list unattended-info@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/unattended-info
Re: [Unattended] howto trash xp
Hi, take a look at the source for RAWRITENT.EXE. It is included in Slackware (http://www.slackware.com;), a wellknown Linux-distribution, and you probably only have to change the check that a removable drive is the target. But I think that you have to be administrator on that machine and most antivirus programms should disable these writes to the MBR. Regards Stefan Kell On Tue, 15 Feb 2005, Maurice Massar wrote: hi, On Tue, Feb 15, 2005 at 05:13:05PM +, Hugo Monteiro wrote: I'd like to know if there's a simple way of trashing a prefectly good installation of XP, in such a way that in the next boot, if the client is configured to boot from the lan, it starts a brand new unattended install. I would guess, to make the disk unbootable in a way the bios can recognize, means overwriting the last to bytes of the MBR which should be 0x55 0xAA with something else. For simplicity for example overwriting the whole MBR. If running linux that would be: # dd if=/dev/zero bs=512 count=1 of=/dev/hda but I do not know how to do this with xp. does someone else know? cu maurice --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ unattended-info mailing list unattended-info@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/unattended-info --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ unattended-info mailing list unattended-info@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/unattended-info
Re: [Unattended] howto trash xp
In win95 and probably 98 you could do: fdisk /mbr on the command line XP not sure. Maurice Massar wrote: hi, On Tue, Feb 15, 2005 at 05:13:05PM +, Hugo Monteiro wrote: I'd like to know if there's a simple way of trashing a prefectly good installation of XP, in such a way that in the next boot, if the client is configured to boot from the lan, it starts a brand new unattended install. I would guess, to make the disk unbootable in a way the bios can recognize, means overwriting the last to bytes of the MBR which should be 0x55 0xAA with something else. For simplicity for example overwriting the whole MBR. If running linux that would be: # dd if=/dev/zero bs=512 count=1 of=/dev/hda but I do not know how to do this with xp. does someone else know? cu maurice --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ unattended-info mailing list unattended-info@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/unattended-info --- SF email is sponsored by - The IT Product Guide Read honest candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595alloc_id=14396op=click ___ unattended-info mailing list unattended-info@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/unattended-info
