Results 1 to 4 of 4

Thread: Changing the booting method?

  1. #1
    -G- NNTP User

    Default Changing the booting method?

    In a double boot laptop with a raid setup at install time I was presented
    with a message that I needed to set up a /boot partition with the
    partitioner and warning me that unless I knew what I was doing (and I did
    not!), linux might not boot.
    So, I created the /boot partition.

    When presented with the details of the installation, the section of "Booting
    from" has at least 2 options: 1) to boot from the MBR or 2) from the boot
    partition (there might be another option, from "/" but I am not completely
    sure).

    Both MBR and /boot options were "disabled", so I enabled the "/boot" one.
    Surely enough the machine would not boot after initial install. :-(

    I then decided to reinstall all and choose "MBR". This time everything went
    well. :-)

    So finally my question is this: is there a way to set change of boot mode,
    without having to reinstall the whole system? For example using the Recovery
    mode or similar?
    I am not in a hurry to fix anything, but I would like to learn from the
    knowledgeable people here if there is such a way. Google did not show me
    anything relevant regarding this issue, but perhaps I was not searching the
    right terms.

    Thanks in advance!

    -G-


  2. #2
    Join Date
    Feb 2009
    Location
    Spain
    Posts
    25,547

    Default Re: Changing the booting method?

    On 2013-11-20 17:19, -G- wrote:
    > In a double boot laptop with a raid setup at install time I was presented


    double boot with what, Windows?

    In that case it is best not to boot from the MBR, if you intend on doing
    Windows service pack updates sometime.

    > with a message that I needed to set up a /boot partition with the
    > partitioner and warning me that unless I knew what I was doing (and I did
    > not!), linux might not boot.
    > So, I created the /boot partition.


    Was it a primary? If you don't know, check the number: it must be less
    than 5.

    > When presented with the details of the installation, the section of "Booting
    > from" has at least 2 options: 1) to boot from the MBR or 2) from the boot
    > partition (there might be another option, from "/" but I am not completely
    > sure).


    "/" would not work, per the warning you got.

    > Both MBR and /boot options were "disabled", so I enabled the "/boot" one.
    > Surely enough the machine would not boot after initial install. :-(
    >
    > I then decided to reinstall all and choose "MBR". This time everything went
    > well. :-)
    >
    > So finally my question is this: is there a way to set change of boot mode,
    > without having to reinstall the whole system? For example using the Recovery
    > mode or similar?


    Yes...

    You boot from a rescue system (maybe the rescue xfce image). You
    manually mount your "real" system somewhere, with /boot. You bind mount
    /proc, /sys, and /dev, then chroot.

    At that point you can run YaST (maybe in text mode) and change the boot
    options.

    --
    Cheers / Saludos,

    Carlos E. R.
    (from 12.3 x86_64 "Dartmouth" at Telcontar)

  3. #3
    -G- NNTP User

    Default Re: Changing the booting method?

    Carlos E. R. wrote:

    > On 2013-11-20 17:19, -G- wrote:
    >> In a double boot laptop with a raid setup at install time I was presented

    >
    > double boot with what, Windows?


    Yes, Windows (that was originally in the machine).

    > In that case it is best not to boot from the MBR, if you intend on doing
    > Windows service pack updates sometime.


    Well, that was a problem in my case because trying to set it to boot from
    /boot did not work, the message says that "/" will not work either si I had
    no other obvious option.

    > Was it a primary? If you don't know, check the number: it must be less
    > than 5.


    Oh, I see, that is the reason (it is 6).

    > You boot from a rescue system (maybe the rescue xfce image). You
    > manually mount your "real" system somewhere, with /boot. You bind mount
    > /proc, /sys, and /dev, then chroot.
    >
    > At that point you can run YaST (maybe in text mode) and change the boot
    > options.


    I see, thank you very much for clarifying this.

    -G-


  4. #4
    Join Date
    Feb 2009
    Location
    Spain
    Posts
    25,547

    Default Re: Changing the booting method?

    On 2013-11-20 23:49, -G- wrote:
    > Carlos E. R. wrote:



    >> Was it a primary? If you don't know, check the number: it must be less
    >> than 5.

    >
    > Oh, I see, that is the reason (it is 6).


    Then the trick is to install grub on the extended partition, that
    happens to also be a primary.

    --
    Cheers / Saludos,

    Carlos E. R.
    (from 12.3 x86_64 "Dartmouth" at Telcontar)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •