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Old 11-12-2011, 09:23 PM   #1
Neanderthal
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Registered: Nov 2011
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ubuntu 10.04 lts, boot error : invalid mount point on root


ubuntu is installed on a externat usb drive, i have tryed to fix it with boot repair from a ubuntu 10.04 live cd, but no joy. It gave this read out of my computer problem for if still didnt work ,http://paste.ubuntu.com/736820/ . I know a little about linux , but not enought to fix this on my oun, for I have tryed. I also booted useing super grub 2 boot disk ,booted first option by it finding the grub.cfg file, it did same as when I do a reguler boot , it errored : saying invalid mount point in root = , then I tryed the 2nd boot option on the super boot disk, selected the partition ubuntu 10.04 is installed on , it error : no such device : eb6a26f-5c08-48f8-9203-fd5154716e73 , and drops me at grub rescue prompt. Can this be fixed from grub prompt or do I need to run some command from a live cd boot.

this is a laptop with xp on it processor 1800 mhz, 1400 meg mem , Thank you for your help , been working on this for about 3 or 4 weeks,I try to fix myself for u learn more , but I am not too smart when it comes to linux , just learning. Thank u again hope someone can help me. Neanderthal P.S. the windows install is booting fine , just need help on the ubuntu 10.04 install

Last edited by Neanderthal; 11-12-2011 at 09:35 PM. Reason: needed to add that the windows install is booting fine ,
 
Old 11-12-2011, 10:47 PM   #2
ukiuki
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Hi

Looks like something got messed up in the install, and grub is point to a different partition than the one the system is installed so the Linux boot partition. Try to reinstall, it can be a learning process and redoing so you might find out why grub cant find your external USB drive. If you don't know much about Linux go with what is simple and familiar to you. Reinstalling maybe a good way, have you tried install in the internal drive?

Regards
 
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Old 11-13-2011, 07:16 AM   #3
Neanderthal
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ubuntu 10.04

Quote:
Originally Posted by ukiuki View Post
Hi

Hi
Looks like something got messed up in the install, and grub is point to a different partition than the one the system is installed so the Linux boot partition. Try to reinstall, it can be a learning process and redoing so you might find out why grub cant find your external USB drive. If you don't know much about Linux go with what is simple and familiar to you. Reinstalling maybe a good way, have you tried install in the internal drive?

Regards
Hi
Yes I have tryed the main drive but not on this machine, it goes with another machine. Got it on this lap top because it supports usb boot from bois .Useing plop boot manager to inable usb on boot on other machine, and its working fine. Have done tryed to reinstall ubuntu 10.04 2 times to drive to same partition to fix install ,but it moves to another partition and installs, I started out with 3 partitions on the usb drive.If there is'nt a way to fix it other wise , I will backup files I have on the usb drive and reformat the drive, put 3 partitions back on the drive, then reinstall. Is there not a way to reinstall to same partition to fix a install like u can in windows. I have been looking around for 2 years and have not found if there is. Thank u Neanderthal P.S I like ubuntu , This usb drive is for a friends computer.It is slower but will run it.My friends main drive is'nt big enough for xp and ubuntu with room to grow , thats why I haveing to redo it, but thats geting side tracked. Thank u again , Neanderthal
P.S. It is finding my usb drive , it just cant find the mount point on it, says please add valid mount point for root = .Think that got messed up from other 2 installs, make 3 so far.Figure would ask for help before it get to where couldn't be fixed without reformat. Thanks Neanderthal

Last edited by Neanderthal; 11-13-2011 at 07:55 AM. Reason: used dir instead of partitions & added P.S
 
Old 11-13-2011, 08:36 AM   #4
yancek
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I'm not sure I understand what you are doing but, it seems that you are trying to install Ubuntu 10.04 on a friends external drive as the only system. Have you installed Grub to the master boot record of the external drive? Do you have an Ubuntu or any Linux Live CD which you could use to post actual information? Partition information for the external drive, bootloader information?

You could get detailed information by downloading and running the bootinfoscript from the site below and posting the output here. Also, if you do, let us know if this is the output from the machine it will actually be attached to and which drive is the external:

http://bootinfoscript.sourceforge.net/
 
Old 11-13-2011, 09:42 AM   #5
Neanderthal
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ubuntu 10.04

Quote:
Originally Posted by yancek View Post
I'm not sure I understand what you are doing but, it seems that you are trying to install Ubuntu 10.04 on a friends external drive as the only system. Have you installed Grub to the master boot record of the external drive? Do you have an Ubuntu or any Linux Live CD which you could use to post actual information? Partition information for the external drive, bootloader information?

You could get detailed information by downloading and running the bootinfoscript from the site below and posting the output here. Also, if you do, let us know if this is the output from the machine it will actually be attached to and which drive is the external:

http://bootinfoscript.sourceforge.net/
Hi
The reason I got the usb drive on my laptop was to verify that it would boot on a computer with usb bois support as it says to do in the plop boot manager how to.When I did the reinstall the last 2 times it fixed the grub 2 boot loader, but would get stuck when it goes to mount the root= mount point on the drive.so that how i got here. I done had the file in link u gave me , the third drive in the results is my thumb drive I used to get the text to this computer I am on now. Here is the results text in the attachment.I have grub 2 installed in the mbr of the usb drive, and in the partition of ubuntu 10.04 which is sdb,11, the grub in sdb8 was the first install, tryed to do a repair install and it installed in another patition.The parition sdb,8 was formated before the reinstall, I even installed the grub to all partitions, so should point to right place, but fells to when it goes to mount point. the results text is on the lap top, have to get it where will boot on laptop with bois support be trying on other computer.The xp home is the xp on other computer, its booting , when I try to boot from other it does same thing done on laptop.So it will be easyer to fix the usb drive's boot, on laptop , then move to other computer since laptop has usb bois boot support. I uploaded the attachment. And Thank u for your time, Neanderthal
P.S. Didn't know where else to ask for help.Where I live everyone comes to me for help , but I ussually have no one to ask for everyone I know can't do what I do , they come to me.I learned to fix dos on my first computer , a 8086, wouldnt run windows.did same on win98, winme, xp, but have trouble on vista, a lot dont work in it that did in xp.Some of my own computers are down a long time before I get them fixed.I once worked 3 years on 1 off and on before I got it fixed.Just saying that for I try to fix my own, but a foolish man won't omit when they need help,and then learn from what they find out. Thank u again, Neanderthal Oh the external is the sdb drive and the boot partition is the sdb,11 and Thank you again Neanderthal
Attached Files
File Type: txt RESULTS.txt (13.2 KB, 4 views)

Last edited by Neanderthal; 11-13-2011 at 09:57 AM. Reason: changed mba to mbr
 
Old 11-13-2011, 01:09 PM   #6
ukiuki
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One thing i dont get is why so many swap partitions, did you reinstall and let Ubuntu to create the partitions or did you create it manualy?

My sugestion about partitioning is keep it simple you only really need 2 partitions:
1- root /
2- swap (about double the size of your RAM memory will do, lets say you have 1Gb RAM then make 2Gb swap partition)

Just one swap partition will do even if you have more than one Linux distribution installed.

About grub check this:
Quote:
grub

Note that grub uses hd numbers in the form of (hdM,n) and (hdM), instead of hdXy and hdX.

M corresponds to a number from '0', which represents 'a' for X.
For every letter after that, add one.
'b' is '1', 'c' is '2', 'd' is '3', etc.

n corresponds to a number from '0', which represents '1' for y.
Subtract 1 from y to get n.
'1' becomes '0', '2' becomes '1', '3' becomes '2', etc.

Since this guide is using hda1 for hdXy, this means that (hdM,n) is (hd0,0)
and that the use of hda for hdX means (hdM) is (hd0)
I got this info from:http://distro.ibiblio.org/tinycoreli...ll_manual.html


Well your boot partition is 11 but for grub it isnt, maybe that is why grub cant find the boot partition.
Note you actualy dont have 11 partitions in that drive but just 10, so it cant be partition #11.

Regards
 
Old 11-13-2011, 02:26 PM   #7
Neanderthal
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Registered: Nov 2011
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ubuntu 10.04

Quote:
Originally Posted by ukiuki View Post
One thing i dont get is why so many swap partitions, did you reinstall and let Ubuntu to create the partitions or did you create it manualy?

My sugestion about partitioning is keep it simple you only really need 2 partitions:
1- root /
2- swap (about double the size of your RAM memory will do, lets say you have 1Gb RAM then make 2Gb swap partition)

Just one swap partition will do even if you have more than one Linux distribution installed.

About grub check this:

I got this info from:http://distro.ibiblio.org/tinycoreli...ll_manual.html


Well your boot partition is 11 but for grub it isnt, maybe that is why grub cant find the boot partition.
Note you actualy dont have 11 partitions in that drive but just 10, so it cant be partition #11.

Regards
Hi
As far as the partitions go , I needed 3 on the drive not counting the 1 swap.And thats what I tryed to keep but when installing linux or ubuntu I set the advance to make it install where I needed it but it seemed to have a mind of its own.
I am backing up the windows drive backup to a drive of mine then going to reformat the drive,put 3 partitions on it . Then remove internal drive from laptop.Boot live ubuntu 2.7 dvd which is a 10.04 version.Then going to reinstall to a partition, will more than likely end up with a 4th partition and 1 swap for it seems like it always want to divided the partition I pick to insatall into , may try to set partitions from install program may get 3 partitions and 1 swap that way. Then will see if it will boot . If so will copy xp backup to backup dir and try on other computer.Will post back here if that works, it should. But it would be easyer if could do a repair install into the same partition and dir and it not run off to some other some other partition and spit it into 2 partitions. Thank you for your time , if I get it fixed will close this if not will still need help, Will post back tomorrow, going to take 5 hours to move the backup. I Thank everyone for their time , Neanderthal

Last edited by Neanderthal; 11-13-2011 at 02:27 PM. Reason: added hi
 
Old 11-13-2011, 02:55 PM   #8
ukiuki
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You can manualy set the partitions, select manual partitioning, dont let Ubuntu do it, things will just get more confusing.
I would delete all the partitions the installer have made and start over just with the 2 partitions you need.
Do it manualy it is possible.
 
Old 11-13-2011, 03:36 PM   #9
yancek
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I would suggest that you use your Linux CD, boot from it, create a mount point for sdb11, mount it and navigate to the /boot/grub/grub.cfg file and change the line:

Quote:
set root='(hd1,11)'
To:

Quote:
set root='(hd0,11)'
Use sudo gedit to edit the file, save it and try rebooting. The entry you have is for the second drive and partition 11 and you are not booting from the first drive unless you have modified the windows boot file?
 
Old 11-13-2011, 04:52 PM   #10
Neanderthal
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Registered: Nov 2011
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ubuntu 10.04

Quote:
Originally Posted by yancek View Post
I would suggest that you use your Linux CD, boot from it, create a mount point for sdb11, mount it and navigate to the /boot/grub/grub.cfg file and change the line:



To:



Use sudo gedit to edit the file, save it and try rebooting. The entry you have is for the second drive and partition 11 and you are not booting from the first drive unless you have modified the windows boot file?
Hi have done edited the file grub.cfg and changed to first drive , but I don't know how to set the mount point, if had it set I think it would work. If you can tell me how to manually set mount point from a live cd ,I will listen and learn . Thats what I was hopeing someone knew how to do . Thank you , Neanderthal
P.S. I found storage devise manager, it suppose to be able to set mount point will try it in a bit.

Last edited by Neanderthal; 11-13-2011 at 06:46 PM.
 
  


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