Pouria Posted November 21, 2005 Report Share Posted November 21, 2005 Hi,I have seen it before:You can boot the system by a disk and use DEBUG program to move some data on boot sector of your HDDand save that changes on the floppyand HDD will be unusable until you'll undo that changes by a similar job.but , now I can't find those commandsanybody knows that?Thanks. Quote Link to comment Share on other sites More sharing options...
korgg Posted November 21, 2005 Report Share Posted November 21, 2005 Well, I guess you got to have on your boot disk the "debug.exe" or com program ... And if you have it run it with full path like: "a:\debug.exe "Why the sudden interest for MS-DOS lately ? :D ... Quote Link to comment Share on other sites More sharing options...
Pouria Posted November 21, 2005 Author Report Share Posted November 21, 2005 I mean by using debug we can change some bytes on boot sector of HDDand then the system cannot boot.until you roll back those changes.We can use that for a good security you know... ;) Quote Link to comment Share on other sites More sharing options...
ɹəuəllıʍ ʇɐb Posted November 22, 2005 Report Share Posted November 22, 2005 You mean like a file editor / hex editor ? Quote Link to comment Share on other sites More sharing options...
Scarecrow Man Posted November 22, 2005 Report Share Posted November 22, 2005 I mean by using debug we can change some bytes on boot sector of HDDand then the system cannot boot.until you roll back those changes.We can use that for a good security you know... ;)Change your boot sector? You mean like fdisk /mbr, and for 2000/XP fixmbr.You also mention "security". The only program I can think of that protects the computer like that is, Pointsec. It uses password encryption, and the user is asked for a password to boot the computer, before any OS starts, even DOS. Quote Link to comment Share on other sites More sharing options...
Pouria Posted November 22, 2005 Author Report Share Posted November 22, 2005 Not exactly.you can move some byte by MOV command of DEBUGand back them in their original place to fix.indeed you crash your HDD and then you fix it again!I saw that in an issue but i,ve lost that.There were only 5-10 lines of commands but I ,ve forgotten it. Quote Link to comment Share on other sites More sharing options...
korgg Posted November 22, 2005 Report Share Posted November 22, 2005 Assuming that you broke the boot sector, if I insert a win 98 system disk and make a fdisk /mbr would I be able to boot from that disk or access it ? :D ...You could use GRUB for instance as it can be password protected ... As an alternative ... Using the debug shell is not safe and besides that's kind of an old, old school :D ... Quote Link to comment Share on other sites More sharing options...
Pouria Posted November 22, 2005 Author Report Share Posted November 22, 2005 I prefer it.I don't know about recovery power of fdisk/mbr... Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.