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Old 09-25-2010, 04:20 PM   #1
Vegan
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cannot boot live backtrack dvd


Trying to boot backtack 4 and I am running into issues. There are a few different options to boot from. And this happens with whichever option I choose.

Hda: cdrom_decode_status: status=0x51 {driveready seekcomplete error}
Hda: cdrom_decode_status: error=0x40 {lastfailedsense=0x40 }
Hda: possibly failed opcode: 0xa0

Other live distros work. I have tried 2 different isos and 4 different dvds. And the live boot works when I try it in virtualbox.
Per a google search I turned plug and play os on and off in the bios. Haven't tried much else.
Any ideas?
 
Old 09-25-2010, 04:26 PM   #2
trist007
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Put Backtrack 4 on a usb flash drive instead.
 
Old 09-25-2010, 05:47 PM   #3
Vegan
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Quote:
Originally Posted by trist007 View Post
Put Backtrack 4 on a usb flash drive instead.
I don't have that option.
And would like to solve this. Still new to all this stuff
 
Old 09-25-2010, 05:49 PM   #4
repo
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Try to burn the iso at a lower speed.

Kind regards
 
Old 09-25-2010, 06:19 PM   #5
Vegan
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Quote:
Originally Posted by repo View Post
Try to burn the iso at a lower speed.

Kind regards
Just burned one at my lowest speed (6x) still same result
 
Old 09-26-2010, 04:41 AM   #6
repo
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Does it boot on another computer?


kind regards

Last edited by repo; 09-26-2010 at 04:47 AM.
 
Old 09-26-2010, 08:54 AM   #7
onebuck
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Hi,

You did verify the ISO?

The 'md5sum' or 'hash' is very important to learn to use and too regularly get in the habit of utilizing it. You can get a sum checker for M$ if need be; 'md5sum.exe'.

For GNU/Linux the 'man md5sum' will get you all the information to perform the check. You can get the 'man command' from the 'cli' at anytime.

If you downloaded the CD/DVD ISO then be sure to check the md5sum for the original ISO. From the cli;
Code:
 ~#cd /downloadisolocation      #cdromiso.iso cdromiso.md5
 ~#md5sum -c cdromiso.md5       #substitute the correct name to check
If the ISO md5 is OK then you should check the image burn with 'CdromMd5sumsAfterBurning''.

This way you will know if the burn was OK!

This will check the download ISO with the known md5sum that you also get with the ISO. You should do the check for any download that you might perform, even a LiveCD. Plus burn the image. Sometimes you may need to lower the burn rate to get a valid burn.


The above links and others can be found at 'Slackware-Links'. More than just SlackwareŽ links!
 
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Old 09-26-2010, 11:52 AM   #8
Vegan
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Looks the it was the md5sum
If failed on md5sum.txt on all of the ones I have. So looks like I will be redownloading it today when I get the chance
What would cause 2 isos to fail that test?
Thank you again!
 
Old 09-27-2010, 03:42 AM   #9
gripip
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Quote:
Originally Posted by Vegan View Post
Looks the it was the md5sum
If failed on md5sum.txt on all of the ones I have. So looks like I will be redownloading it today when I get the chance
What would cause 2 isos to fail that test?
Thank you again!
I guess backtrack is downloaded via torrents so download torrent file(same version number) and copy backtrack image in default torrent folder, torrent client will check hashes and re download the damaged sections only.
 
Old 09-27-2010, 08:05 AM   #10
onebuck
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Hi,

Quote:
Originally Posted by Vegan View Post
Looks the it was the md5sum
If failed on md5sum.txt on all of the ones I have. So looks like I will be redownloading it today when I get the chance
What would cause 2 isos to fail that test?
Thank you again!
You should have a md5sum for each ISO that matches to the original ISO. That md5sum & asc file should be available with the ISO.

As to the failure, it could be local problem with verification methodology. Or even storage media issues locally. Rare to have a problem from the original source or mirror. Be careful as to where you source the ISO. Know the validity of the source/mirror.

To many users depend on applications to do the verify. Some burn applications do pad thus a potential verification problem(s).

I do suggest that you verify your source. Possibly choose another mirror or source for the ISO image. If you can get the original then that may require ftp, a little slower since most will have a lower service rate unlike some super mirror sites.
 
Old 09-27-2010, 10:37 AM   #11
Vegan
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Quote:
Originally Posted by onebuck View Post
Hi,



You should have a md5sum for each ISO that matches to the original ISO. That md5sum & asc file should be available with the ISO.

As to the failure, it could be local problem with verification methodology. Or even storage media issues locally. Rare to have a problem from the original source or mirror. Be careful as to where you source the ISO. Know the validity of the source/mirror.

To many users depend on applications to do the verify. Some burn applications do pad thus a potential verification problem(s).

I do suggest that you verify your source. Possibly choose another mirror or source for the ISO image. If you can get the original then that may require ftp, a little slower since most will have a lower service rate unlike some super mirror sites.
Awesome. Thank you guys very much!
 
Old 09-27-2010, 10:57 AM   #12
onebuck
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Hi,

Please mark the post as [Solved] if the issue has been addressed.
 
  


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