Re: Multiboot.

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Auteur: Tim Walker
Date:  
À: guilde
Sujet: Re: Multiboot.
This works with NT 3.1 also.


Martial Lachmann wrote:
>
> Je renvoie le fichier html attache apres reformattage en 7bits,
> mon browser ne pouvait pas l'imprimer.
>
>     ---------------------------------------------------------------

>
> NT OS Loader + Linux mini-HOWTO
>
> Bernd Reichert, <reichert@???>
> v1.11, 2 September 1997
>
> 1. Abstract
>
> This document describes the use of the Windows NT boot loader to start
> Linux. This procedures have been tested with Windows NT 4.0 WS and
> Linux 2.0.
>
> 2. How does the NT OS Loader work
>
> The NT OS loader likes to have the boot sector from the other
> operating systems available as a file. It reads this file and starts
> the operating system selected, i.e. either Windows NT in different
> Modes or any other OS.
>
> 3. Tips on how to install Windows NT and Linux on the same System
>
> 3.1. Windows NT installation
>
> Try to install Windows NT first. If you want to use NTFS for your
> Windows NT-partition, keep in mind, that the todays production version
> of Linux cannot access NTFS partitions. An alpha driver that can read
> NTFS-Partitions is vailable at
> http://www.informatik.hu-berlin.de/~loewis/ntfs.
> You may create a separate FAT-Partition for data exchange or you have
> to use DOS-formatted floppies.
>
> 3.2. Partitioning
>
> Another Mini-howto recommends not to use NTs "Disk Administartor" to
> create the Linux swap - and root- partitions. It is sufficient to see
> the free space there. I also recommend to use linux's fdisk later.
>
> 3.3. Linux installation
>
> Now boot linux from diskettes, create the swap and root-partition.
> Fdisk assumes the ntfs-partition to be a HPFS-partition. This is
> normal. Boot again from diskettes and install Linux as you like.
> Just in case the installation procedure suggests that you could mount
> the NTFS partition which it has found: Ignore it.
>
> 3.4. Lilo
>
> When you come to the Lilo-Section, specify your Linux-root-partition
> as your boot device because the Master Boot Record (MBR) of your
> harddisk is owned by Windows NT. This means that the root-entry and
> the boot-entry in your /etc/lilo.conf have the same value. If you have
> a IDE-harddisk and your Linux-partition is the second partition, your
> boot-entry in /etc/lilo.conf looks like :
>
> boot=/dev/hda2
>
> If you have two disks and your Linux resides on the first partition of
> your second disk, your boot-entry in /etc/lilo.conf looks like:
>
> boot=/dev/hdb1
>
> Run lilo with a kernel that matches your system. Check the kernel by
> booting from diskette first if you are not sure. If you cannot boot
> Windows NT now, you have a problem. I hope you have created a
> repair-disk recently.
>
> 4. Bootpart
>
> There is a NT-programm called bootpart written by G. Vollant that can
> do the jobs from the next two points for you. Bootpart is available at
> http://ourworld.compuserve.com/homepages/gvollant/bootpart.htm.
>
> If you want to know how things are working together, use the
> procedures described in point 5 and 6.
>
> 5. The Linux part of the work
>
> You have to boot from diskettes until the NT-part is fixed. Now you
> have to peel the bootsector from your Linux-root-Partition. With
> /dev/hda2 as your linux-partition, the dd-command is:
>
> # dd if=/dev/hda2 of=/bootsect.lnx bs=512 count=1
>
> NB. There is something wrong if your bootsect.lnx has more than 512
> bytes.
>
> Now copy the file bootsect.lnx to a DOS-formated floppy if this is
> your way to transfer files to the NTFS-Windows-partition. You can copy
> it with :
>
> # mcopy /bootsect.lnx a:
>
> or with :
>
> # mount -t msdos /dev/fd0 /mnt
> # copy /bootsect.lnx /mnt
> # umount /mnt
>
> 6. The Windows NT part of the work
>
> Copy the file from the diskette to C:\bootsect.lnx. I don't tell you
> how to do that. What lilo.conf is for linux is what c:\boot.ini is for
> Windows NT. Remove the system and the read-only attributes before you
> can modify it with :
>
> C:\attrib -s -r c:\boot.ini
>
> Now change the file boot.ini with an editor, notepad for example, as
> follows :
>
> [boot loader]
> timeout=30
> default=multi(0)disk(0)rdisk(0)partition(1)\WINNT
>
> [operating systems]
> multi(0)disk(0)rdisk(0)partition(1)\WINNT="Windows NT Workstation ...
> multi(0)disk(0)rdisk(0)partition(1)\WINNT="Windows NT Workstation ...
>
> C:\BOOTSECT.LNX="Linux"
>
> Only the last line has been added in this example. Restore the
> attributes after you have saved boot.ini with :
>
> C:\attrib +s +r c:\boot.ini
>
> After a shutdown of your Windows NT and a restart you should see the
> following :
>
> OS Loader V4.00
> Please select the operating system to start :
>
>    * Windows NT Workstation Version 4.0
>    * Windows NT Workstation Version 4.0 [VGA mode]
>    * Linux

>
> Select Linux and see LILO loading zImage ....
>
> 7. Play it again Sam
>
> A new copy of bootsect.lnx must be transfererd to C:\BOOTSECT.LNX evry
> time the bootsector of your linux-partition has been modified. This
> happens for example when you install a new kernel with lilo. As you
> can see such a system in not ideal for testing experimental kernels.
>
> 8. Troubleshooting
>
> If things do not work as expected, check bootability with a floppy
> disk. With /dev/hdb1 as your Linux-partition, your /etc/lilo.conf has
> the following entries :
>
> root=/dev/hdb1
> boot=/dev/fd0
>
> Run lilo with a diskette inserted. Now try to boot from the diskette.
> If your Linux on /dev/hdb1 can't be started, the NT OS loader will
> also fail to start it. If you see a lot of 01 01 01 01, your root-disk
> is not accessible. Check whether all your disks are known by the bios.
>
> If the floppy boots your Linux partition, you can peel of your
> boot-sector for the NT OS loader with :
>
> # dd if=/dev/fd0 of=/bootsect.lnx bs=512 count=1
>
> You can keep this diskette as your rescue-diskette just in case your
> Windows NT installation breaks.
>
> 9. References
>
> The Linux+WindowsNT mini-HOWTO, the FAQ for FreeBSD 2.X
>
> 10. Acknowledgements
>
> Thanks to Xiaoming Yi <z3c20@???> for the tip that the
> procedures work also with other disks than the first one. Thanks to
> Frank Dennler <Frank.Dennler@???> for the diskette-trick.
>
> 11. Feedback
>
> Any comments are welcome.


-- 
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Tim Walker                                             Hewlett-Packard
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