Booting problem

[wiwerion]

I have downloaded the iso image of Knoppix v 4.0.2 and burned it on CD .But when I intend to boot from the CD, after main screen which requires the return key to be pressed, I get the message;

Scanning for USB/Firewire devices...Done
Can't find Knoppix filesystem sorry. Dropping you to an (very limited) shell. Press reset button to quit.

What is the problem and how can be solved? Thank you.

**There are many like that in forum but really couldnt understand the case as a new user. Sorry for the new thread.

[ckamin]

It sounds like your problem may be caused by a few things.

1. A corrupt disk or iso file, or a cd/dvd burned at too high a speed. 4X is about right for both. Anything faster and it may fail to be read. The iso file can be checked with an MD5 utility. You can do a quick check to see if the list of files on the CD is complete by using the testcd command on boot up. It could also be bad media. I have seen numerous defective disks of different manufacture. It's a common issue.

2. The need to use the "knoppix dma" cheatcode at the "boot:" prompt during boot up.

Downloading by Bittorrent is the most successful way to download. FTP or HTTP will many times result in a corrupt file.

More information can be found through the "Documentation" link at the top of this page. Here are a few links to take you to some useful information.

http://www.knoppix.net/wiki/Downloading_FAQ

http://www.knoppix.net/wiki/Cheat_Codes

[Hoppy]

I get the same error

Scanning for USB/Firewire devices...Done
Can't find Knoppix filesystem sorry. Dropping you to an (very limited) shell. Press reset button to quit.

downloaded live dvd from ftp://kernel.org burnt at 4x with nero onto traxdata (i think) made another burn with imgburn and got same error.
never got that from the live cd which was also burnt onto the same dvd brand..

[ckamin]

Not having experienced this issue myself, it's difficult to determine it's root cause. One other thing I did forget to add before. Some drives have a preference for media. One of my laptops has a QSI drive and simply will not boot from DVD-R media. Burn it to a DVD+R disc and all is well. Don't remember the errors I encountered, but don't recall the one you listed.

The only real cause I can think of is a media issue or a drive/drive controller issue. Try to enable dma using the "knoppix dma" cheatcode as I suggested before. Might want to try "knoppix nodma" just in case it has been enabled and is giving errors as the ones you describe. There is a mention in the Wiki about this concern if you care to look through the "Documentation" links at the top of the page. See this: http://www.knoppix.net/wiki/Using_FAQ#Q:_How_do_I_get_Knoppix_to_boot_Knoppix_ when_it_tells_me_that_it_can.27t_find_the_KNOPPIX_ filesystem_and_is_dropping_me_to_a_shell.3F