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Old 06-09-2003, 09:42 PM   #1
justin2net
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Registered: Jun 2003
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Exclamation How do you boot DOS from Linux??


Hello, I'm a super-newbie to RedHat Linux 8.0 (haven't been using it much except for Apache HTTP Server). I've got one of those BIOS problems. I needed to boot from CD-ROM but my 1st, 2nd, 3rd boot device settings had IDE-0 (my HD) as 1st. I tried to get into my AMIBIOS CMOS settings pannel but I needed my password. I found few password crackers that could find my BIOS/CMOS password off the internet from my second computer. The only thing is, these run from Windows, Windows Command-Prompt, and DOS. I've got a DOS boot disk that I made from the old Windows 98 OS. I don't know how to boot from DOS with RedHat Linux 8.0 and I can't even see my CD-ROM and floppy disk! I can either uninstall RedHat and install WinXP Pro and run the Windows password cracker OR find a way to boot from my floppy disk drive OR find a way to boot from my CD-ROM version of my DOS floppy. Can anybody help me? Thanks all.

P.S: I also tried using those backdoor passwords for AMIBIOS from different websites, they didn't work .
 
Old 06-09-2003, 09:47 PM   #2
fancypiper
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Registered: Feb 2003
Location: Sparta, NC USA
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You don't boot from linux Booting is a computer start up process.

Is there a jumper on the mobo that you can use to re-set the bios to it's defaults? Usually, you move it, let it sit for a second or two, then move it back.

Then hitting delete (or other keys/combinations, check mobo specs, can differ) on the speaker beep should bring up the bios settings page.

Last edited by fancypiper; 06-09-2003 at 09:51 PM.
 
Old 06-09-2003, 11:33 PM   #3
jdtiede
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It sounds to me like you need to look under "dual booting" in a book, manual or man pages. During setup of Linux, there is an opportunity to have Windows included in the boot loader, but you have to tell it which disc partitions are for Windows. My favorite reference is Red Hat Linux 7.3 Bible, though there are newer editions I would buy if I didn't already have this one. The author is Negus, the publisher is Wiley. There should be a new one out soon for RH 9.0; as that would include discs to install 9.0, that might be the best one to get. The shutdown procedure, for one thing, is more straightforward in 9.0.
 
Old 06-10-2003, 12:38 AM   #4
justin2net
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I mean like command Linux when the next time it starts up boot DOS not RedHat Linux 8.0. I know about the jumper reset thing, but if I reset it, I wouldn't still be able to access my CMOS settings anyways becuase you need a password to enter it. I found that off a website but I don't think its true. I believe I haven't changed any of my settings so what risks would I have to accept if I would use that jumper option on my motherboard. I'm afraid . I don't even know how to boot DOS or uninstall RedHat Linux 8.0. I can't even access my CD-ROM drive and floppy! What should I do? Gimme a tutorial please. Thx
 
Old 06-10-2003, 12:51 AM   #5
fancypiper
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Can you boot to Linux? See this:
LNAG - Accessing my drives section

If you can get into Linux, perhaps you can just add a windows stanza to boot Windows then.

Multiboot with GRUB Mini-HOWTO
Installing a bootloader

Well, moving that jumper just resets the bios to it's default setup condition on all my mobos. What is different about AMIBIOS boards?

If you have flashed it, I think that will remove that update as well, but I'm not sure.

How did you manage to get it to ignore floppys and CDs in the first place?

# How do I uninstall Linux completely and keep/use Windows only?
How to Remove Linux and Install Windows 2000
How to Remove Linux and Install Windows XP
You can remove lilo from the mbr with
/sbin/lilo -u
You can remove grub or lilo from the mbr by booting with a Windows 98 boot floppy (at the prompt, type fdisk /mbr), or by using the Windows XP Recovery Console or the Windows 2000 Recovery Console

# Redhat links
RedHat Linux Manuals
Maximum RPM
rpmfind
Easier software management: apt4rpm - Red Carpet
RedHat 8.0 Tips & Tricks

# Redhat 7.3 down configuration commands
setup leads to several configuration tools

# Redhat 7.3 up configuration commands
Configure soundcard:
redhat-config-soundcard
Configure X server:
redhat-config-xfree86
Configure network:
redhat-config-network

Last edited by fancypiper; 06-10-2003 at 01:03 AM.
 
Old 06-10-2003, 04:58 AM   #6
jdc2048
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Quote:
Originally posted by justin2net
I know about the jumper reset thing, but if I reset it, I wouldn't still be able to access my CMOS settings anyways becuase you need a password to enter it.
If you use this method, you will return the BIOS to its original state, which in all cases I have seen removes the password. Therefore you wouldn't need to enter any passwords to get into the BIOS/CMOS settings. The only risk you have is losing any customizations that you made to BIOS. You would have to re-apply all these changes afterwards.

This would be a whole lot easier than uninstalling linux or trying to find some program to hack the password on the BIOS.
 
Old 06-11-2003, 12:36 AM   #7
justin2net
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Registered: Jun 2003
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I got the bootloader that is in RedHat 8.0 (the one thats on the hd not the SYSLINUX one). Can you give me a list of what I should do (like 1st, 2nd, 3rd). Remember I'm a newbie !
I should get that GRUB thing and what do I do with that and I should only use my jumper on my motherboard as a last resort. Anyways, how can I reformat my hard drive anways without using fdisk from DOS. Can I just do it like inside RedHat's interface? Thx
 
Old 06-11-2003, 12:49 AM   #8
justin2net
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Registered: Jun 2003
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Sorry I didn't read your whole post. Now I now how to uninstall it.
I tried putting in my RedHat installer disk but it just started the GRUB thing (I do have GRUB installed then). I gotta go.
 
Old 06-11-2003, 12:59 AM   #9
fancypiper
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I go with every one else and suggest you reset the bios. Then you can change the settings without the password. If you want one, then you can set a password that you may be able to recall.

If anyone besides you have access to open the case, the password is useless protection anyhow.
 
  


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