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is it possible to use wheezy CD to rescue stretch

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  is it possible to use wheezy CD to rescue stretch Long Wind <longwind2@yahoo.com> - 2019-01-09 23:30 +0100
    Re: is it possible to use wheezy CD to rescue stretch Roberto C. Sánchez <roberto@debian.org> - 2019-01-09 23:40 +0100
    Re: is it possible to use wheezy CD to rescue stretch Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-01-10 01:10 +0100
      Re: is it possible to use wheezy CD to rescue stretch Long Wind <longwind2@yahoo.com> - 2019-01-10 01:30 +0100
        Re: is it possible to use wheezy CD to rescue stretch Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-01-10 07:20 +0100
          (solved) Re: is it possible to use wheezy CD to rescue stretch Long Wind <longwind2@yahoo.com> - 2019-01-10 08:10 +0100
        Re: is it possible to use wheezy CD to rescue stretch songbird <songbird@anthive.com> - 2019-01-10 07:40 +0100

#204268 — is it possible to use wheezy CD to rescue stretch

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i have stretch, but can't boot it, i think its grub is bad, i want to boot into it so that i can run grub-install to fix it.
i have wheezy CD, it has rescue option, is it possible to use it to boot stretch? in early Debian CD, it's possible. Thanks! 

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#204269

On Wed, Jan 09, 2019 at 10:26:51PM +0000, Long Wind wrote:
>    i have stretch, but can't boot it, i think its grub is bad, i want to boot
>    into it so that i can run grub-install to fix it.
>    i have wheezy CD, it has rescue option, is it possible to use it to boot
>    stretch? in early Debian CD, it's possible. Thanks!

Yes, that should be possible.  If the tools available in the wheezy
installer environment are insufficient, then you chroot into the broken
jessie environment to issue whatever grub commands you need to restore
your installation to working order.

Regards,

-Roberto

-- 
Roberto C. Sánchez

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#204274

Le 09/01/2019 à 23:26, Long Wind a écrit :
> i have wheezy CD, it has rescue option, is it possible to use it to boot stretch?

Not always. Wheezy's kernel and e2fsprogs tools do not support newer 
ext4 features such as csum_metadata which are enabled by default on ext4 
filesystems created by Stretch's tools.

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#204276

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Thanks, i browse Help of wheezy CD, i don't know what rescue it can do
its advanced option allows you to specify boot option before boot,vmlinuz, initrd, root=/dev/sda2 ...
(my stretch is installed at sda2)
but initrd on CD is intended for install, not for my purpose
no luck, i may have to find other way


 

    On Thursday, January 10, 2019 8:01 AM, Pascal Hambourg <pascal@plouf.fr.eu.org> wrote:
 

 Le 09/01/2019 à 23:26, Long Wind a écrit :
> i have wheezy CD, it has rescue option, is it possible to use it to boot stretch?

Not always. Wheezy's kernel and e2fsprogs tools do not support newer 
ext4 features such as csum_metadata which are enabled by default on ext4 
filesystems created by Stretch's tools.



   

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#204282

Le 10/01/2019 à 01:21, Long Wind a écrit :
> Thanks, i browse Help of wheezy CD, i don't know what rescue it can do
> its advanced option allows you to specify boot option before boot,vmlinuz, initrd, root=/dev/sda2 ...
> (my stretch is installed at sda2)
> but initrd on CD is intended for install, not for my purpose

The rescue mode will ask you to select the root filesystem and start a 
shell on it (with chroot). You can also start a shell in the installer 
(initramfs).

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#204284 — (solved) Re: is it possible to use wheezy CD to rescue stretch

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i remove problem stretch disk to another pc also running stretchand let it boot problem stretch (after reconfig grub)and fix problem stretch with grub-install

Thank Pascal and songbird anyway! 

    On Thursday, January 10, 2019 2:19 PM, Pascal Hambourg <pascal@plouf.fr.eu.org> wrote:
 

 Le 10/01/2019 à 01:21, Long Wind a écrit :
> Thanks, i browse Help of wheezy CD, i don't know what rescue it can do
> its advanced option allows you to specify boot option before boot,vmlinuz, initrd, root=/dev/sda2 ...
> (my stretch is installed at sda2)
> but initrd on CD is intended for install, not for my purpose

The rescue mode will ask you to select the root filesystem and start a 
shell on it (with chroot). You can also start a shell in the installer 
(initramfs).



   

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#204283

Long Wind wrote:
...
> but initrd on CD is intended for install, not for my purpose
> no luck, i may have to find other way

  can you download and create a USB stick with the
relevant netinst image on it?

  that has a rescue aspect which should be compatible.


  songbird

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