LinuxQuestions.org
Help answer threads with 0 replies.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie
User Name
Password
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!

Notices


Reply
  Search this Thread
Old 07-06-2004, 03:07 PM   #1
dvgt
LQ Newbie
 
Registered: Mar 2004
Distribution: Gentoo 2005.0
Posts: 7

Rep: Reputation: 0
knoppix 3.4: hard disks have vanished!!


I downloaded knoppix 3.4 (english version) build: 17-05-2004 (the most recent version i think). i burned it with k3b under linux and booted the cd. everything went fine until i rebooted my computer. i get the following boot message:

searching for boot record from floppy .. not found
searching for boot record from cdrom .. not found
searching for boot record from scsi .. not found

boot failure
insert boot diskette in a:
press any key when ready

i have inserted the boot diskette for windows 98 and started fdisk and i said i didn't have any fixed hard disks present. i'm thinking knoppix destroyed my hard disk! can someone please help me!!

maybe some additional info will help you to find the error:

1) before i booted knoppix, at boot time i didn't get "searching fo boot record from scsi .. not found" but there was "searching fo boot record from ide-0 .. " and then the bootloader grub started.
2) i mounted two hard disk partitions (under the kde) when is was working with knoppix for the first time, but i forgot to unmount them, maybe that is where it all went wrong?

if you have any suggestions, please help me, i'm a real computer fan and i want to continue working on, as soon as possible!!

thanks dvgt
 
Old 07-06-2004, 04:50 PM   #2
jailbait
LQ Guru
 
Registered: Feb 2003
Location: Blue Ridge Mountain
Distribution: Debian Jessie, Linux Mint 17
Posts: 7,750

Rep: Reputation: 271Reputation: 271Reputation: 271
"searching for boot record from floppy .. not found
searching for boot record from cdrom .. not found
searching for boot record from scsi .. not found

boot failure
insert boot diskette in a:
press any key when ready"

My first guess is that your BIOS does not recognize your hard drives. Take a look at your BIOS and see how it has your hard drives configured.

___________________________________
Be prepared. Create a LifeBoat CD.
http://users.rcn.com/srstites/LifeBo...home.page.html

Steve Stites
 
Old 07-07-2004, 10:21 AM   #3
dvgt
LQ Newbie
 
Registered: Mar 2004
Distribution: Gentoo 2005.0
Posts: 7

Original Poster
Rep: Reputation: 0
my bios is configured so that it first searches for a boot section at the FDD, then at the CD-ROM and as last at IDE-0. i didn't change the configuration, 'cause it was working just fine. the strange thing is that now the bios searches a SCSI device instead of an IDE device. i tried to let my bios auto-search my primary and secondary master and slave devices, but all it found was my CD-ROM drive as the secondary slave (or master, i forgot). so it didn't find any primary devices.

my biggest question is if knoppix could have destroyed my hard disk? i have a vague presumption that if you mount a partion of a hard disk and you shutdown without unmounting it, you cause damage to that partition or even to the whole hard disk. is that correct?? or is every partition unmounted before shutting all processes down??

please try a second guess

thank you for answering!
 
Old 07-07-2004, 10:50 AM   #4
jailbait
LQ Guru
 
Registered: Feb 2003
Location: Blue Ridge Mountain
Distribution: Debian Jessie, Linux Mint 17
Posts: 7,750

Rep: Reputation: 271Reputation: 271Reputation: 271
"my biggest question is if knoppix could have destroyed my hard disk? i have a vague presumption that if you mount a partion of a hard disk and you shutdown without unmounting it, you cause damage to that partition or even to the whole hard disk. is that correct?? or is every partition unmounted before shutting all processes down??"

There is a shutdown command. If you execute the shutdown command then shutdown writes all of the dirty buffers in the cache to the hard drive, umounts the file system, and then records the fact that the file system has been umounted in the file system superblock. If you come down hard without going through the shutdown command then you may have a corrupt file system and for sure you will not have the clean umount flag set.

When you boot after a hard shutdown then you will go through grub OK and load the kernel OK, unless the unwritten dirty buffers happened to be updates to grub or the kernel. When the system begins mounting all of the file systems in /etc/fstab you will get error messages saying that you need to run e2fsck against the file systems that were not dismounted cleanly. So the symptoms that you describe are not very likely to be caused by a hard shutdown in knoppix.

"the strange thing is that now the bios searches a SCSI device instead of an IDE device. i tried to let my bios auto-search my primary and secondary master and slave devices, but all it found was my CD-ROM drive as the secondary slave (or master, i forgot). so it didn't find any primary devices."

I do not think that your problem is software related. The BIOS is failing to find your hard drives and is not getting to the point of reading the MBR and starting grub. I do not know what triggered the problem. Did you have power fluctuations or the dog chewing on the power cord or something like that? In any case the solution is to get the BIOS to recognize the hard drives to where it goes back to the message, "searching fo boot record from ide-0 .. ". Play around with the BIOS hard drive configuration settings and see what you can do. If you have a corrupt BIOS you may have to flash your BIOS (reload the BIOS program) which somebody else will have to explain how to do since I have never done it.


___________________________________
Be prepared. Create a LifeBoat CD.
http://users.rcn.com/srstites/LifeBo...home.page.html

Steve Stites

Last edited by jailbait; 07-07-2004 at 10:52 AM.
 
Old 07-07-2004, 11:48 AM   #5
dvgt
LQ Newbie
 
Registered: Mar 2004
Distribution: Gentoo 2005.0
Posts: 7

Original Poster
Rep: Reputation: 0
so if i understand it well: knoppix wasn't the cause of my problem, even if i would shut down the power when some partitions were mounted, my hard disk wouldn't be damaged because of the sofware (the OS)?

i did already played around with my bios: everything works, except for my hard disk! i didn't flash my bios yet ( and i do not intend to do it) , because i think it is quite a dangerous job, isn't it?

thank you very much for the technical help and the fast replies, guru jailbait, i really appreciate it, although, it still doesn't work.
i just think my hard disk it seriously broken and i will have to replace it.

by the way: did you ever used knoppix?

ps: i hope my english was not to bad ... i'm not to good at languages .. you know ...
 
Old 07-07-2004, 03:15 PM   #6
jailbait
LQ Guru
 
Registered: Feb 2003
Location: Blue Ridge Mountain
Distribution: Debian Jessie, Linux Mint 17
Posts: 7,750

Rep: Reputation: 271Reputation: 271Reputation: 271
"so if i understand it well: knoppix wasn't the cause of my problem, even if i would shut down the power when some partitions were mounted, my hard disk wouldn't be damaged because of the sofware (the OS)?"

If you shut down the power you will not get any physical damage to the hard disk. You may get some bad data on the hard drive and Linux will try to fix that by running e2fsck the next time you boot.

"i did already played around with my bios: everything works, except for my hard disk! i didn't flash my bios yet ( and i do not intend to do it) , because i think it is quite a dangerous job, isn't it?"

I am not sure how dangerous flashing your BIOS is because I have never had to do it.

"i just think my hard disk it seriously broken and i will have to replace it."

I am fairly certain that your problem is hardware. If the BIOS is not the problem then check for a bad cable connection, a bad power cable connection to your hard disk, a bad IDE controller chipset, or a bad hard disk. If you have a second computer available you can swap components. Try your hard disk in the other computer. Try a hard disk that you know is good in the computer that doesn't work. Swap cables. Swap power supply cables.

"did you ever used knoppix?"

Yes. I then created my own replacement for knoppix called LifeBoat. You can find LifeBoat at:
http://users.rcn.com/srstites/LifeBo...home.page.html
_______________
Steve Stites

Last edited by jailbait; 07-07-2004 at 03:18 PM.
 
Old 07-15-2004, 07:39 AM   #7
dvgt
LQ Newbie
 
Registered: Mar 2004
Distribution: Gentoo 2005.0
Posts: 7

Original Poster
Rep: Reputation: 0
I've tried putting my hard disk in a different computer (as a slave) and suddenly it worked again: I could see it from there and work on it. After a small week of formatting and reinstalling everything ( + we had some virus problems in our network, so I was offline for some time) Iím back: up and running!!

Thanks, jailbit!
This is a great forum!
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
Grub on 2 hard disks ninadb Linux - General 1 03-28-2005 07:57 AM
How many Hard disks ? BizHat.com Linux - Software 5 01-18-2005 08:38 PM
Can I change disks in Knoppix? Todd42 Linux - Distributions 1 02-08-2004 02:03 PM
2 Hard Disks and 2 OS? How to? nbn792 Linux - General 5 12-26-2003 08:20 PM
2 Hard disks hadi Linux - Newbie 4 10-29-2003 03:34 PM


All times are GMT -5. The time now is 06:47 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration