Re: how to install OpenBSD in a computer with Linux and Grub2

[Luiz Gustavo S. Costa]

2010-04-06 8:27 GMT-03:00 Salvador Fandino :
> AFAIK, this procedure is not documented in any place and it is quite handy
> in order to install OpenBSD on boxes that already have a recent Linux inside
> and use grub2 as the boot manager:
>

Hi, your save my life :-)

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Re: how to install OpenBSD in a computer with Linux and Grub2

[tuyosi]

Hi all .

recently i use debian's grub2 as openbsd boot loader .

install debian in ext2fs. no swap , if 2GB space ok .
  ^^
and debian's
/etc/grub.d/40_custom

#!/bin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries.  Simply 
type the

# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.

#1
menuentry 'openbsd wd11' {
#root (hd1,3)
set root='(hd1,msdos4)'
chainloader +1
}

#2
menuentry 'openbsd wd0' {
#root (hd0,3)
set root='(hd0,msdos4)'
chainloader +1
}

#3
menuentry 'openbsd install-5.7' {
kopenbsd /bsd.rd-57
}

#4
menuentry 'openbsd install-snap' {
kopenbsd /bsd.rd-snap

#2 is used main openbsd .
#1 is used as spare or experimental  .
#3 is used as openbsd 5.7 installer or  upgrader .
#4 is used as openbsd snapshot installer .

in order to **update** bsd.rd-snap ,i run next script on **openbsd**(no 
need boot debian) .


 cat bsd-rd.bat

umont /mnt-deb
mount_ext2fs  /dev/wd0i /mnt-deb
rm /mnt-deb/bsd.rd
wget -c  ftp://ftp.openbsd.org/pub/OpenBSD/snapshots/amd64/bsd.rd
mv bsd.rd /mnt-deb/bsd.rd-snap
ls -ltr /mnt-deb/bsd.rd*

i use rental server , so this procedure is very convinient .

thanks.

Re: how to install OpenBSD in a computer with Linux and Grub2

[Gareth Nelson]

Just reboot into grub, hit c to get the command line and type kopenbsd
/bsd.rd there, no need to edit the config twice

On Sun, Jul 12, 2015 at 8:04 AM, tuyosi nakajin.fu...@gmail.com wrote:

 the main process is install debian , and then isntall openbsd by debian's
 grub2

 1) on debian
 download bsd.rd to /

 rewrite /boot/grub/grub.cfg

 menuentry 'Debian GNU/Linux, with Linux 3.2.0-4-amd64 (recovery mode)'
 --class debian --class gnu-linux --class gnu
  --class os {
 load_video
 insmod gzio
 insmod part_msdos
 insmod ext2
 set root='(hd0,msdos1)'
 search --no-floppy --fs-uuid --set=root
 48513cc3-0824-41d2-b0e2-33cefa6dfbc7
 echo'Loading Linux 3.2.0-4-amd64 ...'
 kopenbsd /bsd.rd  -
 echo'Loading initial ramdisk ...'
 boot  -
 }

 then boot by 'Debian GNU/Linux, with Linux 3.2.0-4-amd64 (recovery mode)'

 then openbsd install begin

 2)

 write /etc/grub.d/40_custom
 ーーーーーーーーーーーーー
 #!/bin/sh
 exec tail -n +3 $0
 # This file provides an easy way to add custom menu entries. Simply type
 the
 # menu entries you want to add after this comment.  Be careful not to
 change
 # the 'exec tail' line above.
 menuentry OpenBSD {
 set root=(hd0,4)
 chainloader +1
 }


 and update-grub


 dual boot machine , happy

Re: how to install OpenBSD in a computer with Linux and Grub2

[tuyosi]

your oppinion is correct


Just reboot into grub, hit c to get the command line and type kopenbsd
/bsd.rd there, no need to edit the config twice


but i use rental server .
so i have no time to hit c .
so debian is booted .
so i try another way .

this install is convinet over network install .
if there is not  kopenbsd , i first send install57.iso and start to install 
openbsd .
1 hour or more is costed and whole disk may be ocupied with openbsd only .
i want to use debian (typical linux server) also .

set root=(hd0,4) is wrong.  set root=(hd0,4) is right .

and more i easily try snapshots upgrade .
--
regards

Re: how to install OpenBSD in a computer with Linux and Grub2

[tuyosi]

the main process is install debian , and then isntall openbsd by 
debian's grub2


1) on debian
download bsd.rd to /

rewrite /boot/grub/grub.cfg

menuentry 'Debian GNU/Linux, with Linux 3.2.0-4-amd64 (recovery mode)' 
--class debian --class gnu-linux --class gnu

 --class os {
load_video
insmod gzio
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set=root 
48513cc3-0824-41d2-b0e2-33cefa6dfbc7

echo'Loading Linux 3.2.0-4-amd64 ...'
kopenbsd /bsd.rd  -
echo'Loading initial ramdisk ...'
boot  -
}

then boot by 'Debian GNU/Linux, with Linux 3.2.0-4-amd64 (recovery mode)'

then openbsd install begin

2)

write /etc/grub.d/40_custom
ー
#!/bin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
menuentry OpenBSD {
set root=(hd0,4)
chainloader +1
}


and　update-grub


dual boot machine , happy

Re: how to install OpenBSD in a computer with Linux and Grub2

[Tuyosi Takesima]

i found very interesting method that uses linux grub2 to install openbsd .

that is written in http://yanmoo.blogspot.jp/2012/04/vpsopenbsd.html.

main poin is
---
grub kopenbsd /bsd.rd
grubboot

by this method , i install debian and then oppenbsd in rental server.
now openbsd uses whole disk (no debian) and run gui of openbsd .

it is very fun!

how to install OpenBSD in a computer with Linux and Grub2

[Salvador Fandino]

AFAIK, this procedure is not documented in any place and it is quite 
handy in order to install OpenBSD on boxes that already have a recent 
Linux inside and use grub2 as the boot manager:


0) do any preparatory work needed: backup your data, resize your 
partitions, create a new one for OpenBSD, etc.


1) download bsd.rd and move it to the Linux root partition:

  # wget ftp://ftp.openbsd.org/pub/OpenBSD/4.6/i386/bsd.rd
  # mv bsd.rd /openbsd.rd

2) add the following entry to /etc/grub.d/40_custom

  menuentry Install OpenBSD from RAM disk {
set root=(hd0,1)
kopenbsd /openbsd.rd
  }

replacing (hd0,1) by the partition id corresponding to the Linux root 
file system.


(you may need to modify also /etc/default/grub in order to make grub2 
menu visible)


3) regenerate grub configuration:

  # update-grub

4) reboot:

  # reboot

5) When the grub menu pops up select Install OpenBSD from RAM disk


... and install OpenBSD


Cheers,

- Salva

Re: how to install OpenBSD in a computer with Linux and Grub2

[Vivien MOREAU]

Tuesday 06 Apr 2010 ` 13:27:33 (+0200), Salvador Fandino a icrit :

 AFAIK, this procedure is not documented in any place [...]

http://www.openbsd.org/cgi-bin/cvsweb/src/etc/etc.i386/INSTALL.linux?rev=1.15

 :-)
-- 
Vivien MOREAU

Re: how to install OpenBSD in a computer with Linux and Grub2

[Aaron Lewis]

On 04/06/2010 07:27 PM, Salvador Fandino wrote:
 AFAIK, this procedure is not documented in any place and it is quite
 handy in order to install OpenBSD on boxes that already have a recent
 Linux inside and use grub2 as the boot manager:
 
 0) do any preparatory work needed: backup your data, resize your
 partitions, create a new one for OpenBSD, etc.
 
 1) download bsd.rd and move it to the Linux root partition:
 
   # wget ftp://ftp.openbsd.org/pub/OpenBSD/4.6/i386/bsd.rd
   # mv bsd.rd /openbsd.rd
 
 2) add the following entry to /etc/grub.d/40_custom
 
   menuentry Install OpenBSD from RAM disk {
 set root=(hd0,1)
 kopenbsd /openbsd.rd
   }
 
 replacing (hd0,1) by the partition id corresponding to the Linux root
 file system.
 
 (you may need to modify also /etc/default/grub in order to make grub2
 menu visible)
 
 3) regenerate grub configuration:
 
   # update-grub

I'm on Gentoo Linux , so i think normally you should try with
`grub-mkconfig'
e.g grub-mkconfig  /tmp/grub.cfg  cp /tmp/grub.cfg /boot/grub/grub.cfg

Not all system ships with `update-grub' script.

 
 4) reboot:
 
   # reboot
 
 5) When the grub menu pops up select Install OpenBSD from RAM disk
 
 
 ... and install OpenBSD
 
 
 Cheers,
 
 - Salva
 


-- 
Best Regards,
Aaron Lewis - PGP: 0x4A6D32A0
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Re: how to install OpenBSD in a computer with Linux and Grub2

[Salvador Fandino]

On 04/06/2010 01:40 PM, Vivien MOREAU wrote:

Tuesday 06 Apr 2010 ` 13:27:33 (+0200), Salvador Fandino a icrit :


AFAIK, this procedure is not documented in any place [...]


http://www.openbsd.org/cgi-bin/cvsweb/src/etc/etc.i386/INSTALL.linux?rev=1.15


That is a different thing, the procedure there explains how to boot an 
OpenBSD system from grub once it has been already installed on the 
machine hard disk.


The procedure I have described shows how to *install* OpenBSD booting 
from a RAM disk (bsd.rd) placed in a Linux partition. Basically it 
removes the need to create a booting floppy or to burn a CD in order to 
install OpenBSD.


- Salva

Re: how to install OpenBSD in a computer with Linux and Grub2

[Lars Nooden]

On Tue, 6 Apr 2010, Salvador Fandino wrote:
The procedure I have described shows how to *install* OpenBSD booting from a 
RAM disk (bsd.rd) placed in a Linux partition. Basically it removes the need 
to create a booting floppy or to burn a CD in order to install OpenBSD.


It documents how to do it using grub2, which is IMHO much 
more complex than old grub.


/Lars