[Solved] -- Not booting form CD?

[katie]

I decided to catch up with the rest of the world and downloaded 2010 last evening (KDE)- Md5sum was accurate
Just burned a CD using K3B-- at slowest speed
Checked to see that DVD/CD burner was first boot device-- it was

Booted and up pops Grub menue for old version

Checked CD & it shows the following three folders:
boot
isolinux
livecd.sqfs

Burned two CDs and both fail to boot, although seem to have been burned
Your help wouldbe appreciated
katie

[luikki]

Checked to see that DVD/CD burner was first boot device-- it was

check again!
a dead drive?
bad media?

[Old-Polack]

I decided to catch up with the rest of the world and downloaded 2010 last evening (KDE)- Md5sum was accurate
Just burned a CD using K3B-- at slowest speed
Checked to see that DVD/CD burner was first boot device-- it was

Booted and up pops Grub menue for old version

Checked CD & it shows the following three folders:
boot
isolinux
livecd.sqfs

Burned two CDs and both fail to boot, although seem to have been burned
Your help wouldbe appreciated
katie

Did you check the md5sum of the burned disk? It should match the .iso md5sum.

[katie]

Checked to see that DVD/CD burner was first boot device-- it was

check again!
a dead drive?
bad media?

Definitely not dead-- play CDs on it occasionally (just tried it again)- worked fine
Media- could be a bad CD, I guess-- but a spindle of 100 that I use for almost everything--- perhaps I'll try downloading MiniMe

Did you check the md5sum of the burned disk? It should match the .iso md5sum.

You got me on that one-- how do I do that?

thanks both
katie

[Old-Polack]

Checked to see that DVD/CD burner was first boot device-- it was

check again!
a dead drive?
bad media?

Definitely not dead-- play CDs on it occasionally (just tried it again)- worked fine
Media- could be a bad CD, I guess-- but a spindle of 100 that I use for almost everything--- perhaps I'll try downloading MiniMe

Did you check the md5sum of the burned disk? It should match the .iso md5sum.

You got me on that one-- how do I do that?

thanks both
katie

In a terminal; 

md5sum /dev/<your device>

In my case the device is /dev/sr1 because I have two optical drives and the burner is the second. If you have only one optical drive, it should be /dev/sr0.

[katie]

In a terminal; 

md5sum /dev/<your device>

In my case the device is /dev/sr1 because I have two optical drives and the burner is the second. If you have only one optical drive, it should be /dev/sr0.

Just the one DVD/CD burner (no othr optical devices on the computer)

I played both CDs and DVDs under linux (just to be sure and both work fine

I then opened a terminal and the session follows

[katie@localhost ~]$ md5sum /dev/sr0
md5sum: /dev/sr0: Permission denied
[katie@localhost ~]$ su
Password:
[root@localhost katie]# md5sum /dev/sr0
md5sum: /dev/sr0: No such device or address
[root@localhost katie]#

katie

[Old-Polack]

[katie@localhost ~]$ md5sum /dev/sr0
md5sum: /dev/sr0: Permission denied
[katie@localhost ~]$ su
Password:
[root@localhost katie]# md5sum /dev/sr0
md5sum: /dev/sr0: No such device or address
[root@localhost katie]#

Again from the terminal;

ls -l /dev |grep cdrom

The cdrom in /dev is linked to something. This should show what the something is. You do realize the disk needs to be in the tray, and the tray closed... right?

I only say that because it's happened before.    Chased around looking for what was wrong until I got the response "Oops, the disk was in the case, not the tray."

[melodie]

[katie@localhost ~]$ md5sum /dev/sr0
md5sum: /dev/sr0: Permission denied
[katie@localhost ~]$ su
Password:
[root@localhost katie]# md5sum /dev/sr0
md5sum: /dev/sr0: No such device or address
[root@localhost katie]#

katie

[/quote]

Hi,

No need to be root.
Just try like this:

Code: [Select]

[melodie@localhost ~]$ ls -l /dev/cd*
Do not forget the * attached to 'cd' : 'cd*' : it means that the shell must return all answers as long as it begins with "cd".

Here it returns:

lrwxrwxrwx 1 root root 8 2010-05-04 23:04 /dev/cdrom -> /dev/sr0
lrwxrwxrwx 1 root root 3 2010-05-04 23:04 /dev/cdrom1 -> sr0
lrwxrwxrwx 1 root root 3 2010-05-04 23:04 /dev/cdrw1 -> sr0

This way you will know the naming of your CD/DVD device.

Hi old-polack ! o/

Here you command returns:

$ ls -l /dev |grep cdrom
lrwxrwxrwx  1 root root           8 2010-05-04 23:04 cdrom -> /dev/sr0
lrwxrwxrwx  1 root root           3 2010-05-04 23:04 cdrom1 -> sr0
crw-rw----  1 root cdrom    21,   0 2010-05-04 23:04 sg0

This confuses me a bit, I don't know what this sg0 is.

[katie]

I tried to utilize each thing suggested
old-polack  suggested the following-- to which I got the response indicated

[katie@localhost ~]$ ls -l /dev |grep cdrom
lrwxrwxrwx 1 root root            3 May  4 20:14 cdrom -> hdc

melodie suggested the following-- to which I got the following response
[katie@localhost ~]$ ls -l /dev/cd*
lrwxrwxrwx 1 root root 3 May  4 20:14 /dev/cdrom -> hdc

I then used the first querry substituting the <hdc> ----- again no luck as below
[katie@localhost ~]$ md5sum /dev/dev/hdc
md5sum: /dev/dev/hdc: No such file or directory
[katie@localhost ~]$ ^C
[katie@localhost ~]$


Yes, the DVD/CD door is closed and CD is in place (no need to apologize for asking-- I've done worse)

Again, as suggested, "It must be connected to something"  as I am able to play CDs and DVD movies on my 2009 PCLinux install that I am trying to replace.   But for some reason I am not able to boot from it (& I did double/triple check that the DVD/CD is set as first boot device.

On another note, I was able to begin to boot on on my AMD Dual-core desktop  (this machine is P4).  It got to splash screen and stopped for a couple hours.  I then tried without boot splash and it eventually reported that it was unable to mount the CD.   Just to say that I did get a bit further-- but unfortunately  I needed to start with the P4 machine if possible (the AMD dual core 4400 is not available yet- just used it to check out the media)

thank you for your responses-- I will try to install a CD-Rom to the P4 machine tomorrow and see if that makes any difference

katie

[Old-Polack]

I tried to utilize each thing suggested
old-polack  suggested the following-- to which I got the response indicated

[katie@localhost ~]$ ls -l /dev |grep cdrom
lrwxrwxrwx 1 root root            3 May  4 20:14 cdrom -> hdc

melodie suggested the following-- to which I got the following response
[katie@localhost ~]$ ls -l /dev/cd*
lrwxrwxrwx 1 root root 3 May  4 20:14 /dev/cdrom -> hdc

I then used the first querry substituting the <hdc> ----- again no luck as below
[katie@localhost ~]$ md5sum /dev/dev/hdc
md5sum: /dev/dev/hdc: No such file or directory
[katie@localhost ~]$ ^C
[katie@localhost ~]$


Yes, the DVD/CD door is closed and CD is in place (no need to apologize for asking-- I've done worse)

Again, as suggested, "It must be connected to something"  as I am able to play CDs and DVD movies on my 2009 PCLinux install that I am trying to replace.   But for some reason I am not able to boot from it (& I did double/triple check that the DVD/CD is set as first boot device.

On another note, I was able to begin to boot on on my AMD Dual-core desktop  (this machine is P4).  It got to splash screen and stopped for a couple hours.  I then tried without boot splash and it eventually reported that it was unable to mount the CD.   Just to say that I did get a bit further-- but unfortunately  I needed to start with the P4 machine if possible (the AMD dual core 4400 is not available yet- just used it to check out the media)

thank you for your responses-- I will try to install a CD-Rom to the P4 machine tomorrow and see if that makes any difference

katie

Why don't you try it again, and this time don't add an extra /dev.  

md5sum /dev/hdc

Bet that works.

[katie]

Why don't you try it again, and this time don't add an extra /dev.  

md5sum /dev/hdc

Bet that works.

You're right- that worked fine (now if I can only get it to boot)

What I found so far:
All three CDs have the exact same Md5sum- identical to the downloaded file and identical to the published Md5sum (notwithstanding that a new version was released today- guess how confused I was trying to compare the new Md5sum to the old download??  But finally figured it out)

I also downloaded the MiniMe version and compared both the downloaded file and the CD burned from it to the published Md5sum for MiniMe-- perfect match, but still not booting from CD (defaults to Grub from the old install)

I double/double checked boot sequence-- DVD/CD is still listed as 1st boot device.  When I boot with CD in closed tray, the light blinks several times and then goes to Grub for 2009

Didn't get to try reinstalling old CD-Rom yet; hopefully can do that later this evening

Just thought I'd get back to you and report my [was going to say progress] current position

Thanks for your help
katie

[Old-Polack]

katie:

As strange as this sounds, I've seen it work before, so nothing but a little time to lose trying. In BIOS, you should have at least a choice of the order of booting from three devices. My last allowed setting up to seven. As many as yours allows, set the hard drive as the last, and all the rest to cdrom. This forces BIOS to keep rechecking for boot code on the liveCD, and increases the chance that it will find it within the allotted check time.  

Wouldn't hurt any to clean the lens of the optical drive. either.

[luikki]

i had a situation of a "working" dvd - rw drive (played and burned cd's and dvd's) but wouldn't let me install any os...

[katie]

i had a situation of a "working" dvd - rw drive (played and burned cd's and dvd's) but wouldn't let me install any os...

That turned out to be it-- swapped out the new LQ Super-multi DVD Rewriter [GH22LP20] for the antiqueLite-On CD-ROM Model LTN-526D and it began booting immediately.

After a couple false starts- tried Live-CD, Vesa, Safe Mode & finally tried "Load to RAM"-- and I got to Desktop & install went without a hitch.

Thanks to everyone for your insights, I learned a lot along the way.  I'll probably switch the drives back so I can play DVDs.  By-the-way, I did use one of the CDs I burned on this same DVD burner, so I know the drive is good, just won't boot.

I've got a bit of updating to do- but wanted to express my appreciation to all who helped, and especially to Tex and the Gang for a fine distribution
katie