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-The Linux ``Linux-DOS-Win95-OS2'' mini-HOWTO
-
-
-
-----
-
-!!!The Linux ``Linux-DOS-Win95-OS2'' mini-HOWTO
-
-!!Mike Harlan, r3mdh@raex.comv1.3.1, 11 November 1997
-
-
-----
-''This document presents a procedure to make 4 operating systems co-exist on a single hard disk.''
-----
-
-
-
-
-; __Disclaimer:__:
-
-Any damages inflicted on any machine by you as a result of
-your reading of this HOWTO is still YOUR FAULT. When you read
-about deleting partitions and formatting disks, be smart.
-Realize that doing any of the above will result in loss of data.
-So, BACKUP SOON, BACKUP OFTEN. This is your second-to-the-last warning.
-
-
-
-; __Stuff to make the lawyers happy:__:
-
-Unless otherwise stated, Linux HOWTO documents are copyrighted by
-their respective authors. Linux HOWTO documents may be reproduced and
-distributed in whole or in part, in any medium physical or electronic,
-as long as this copyright notice is retained on all copies.
-Commercial redistribution is allowed and encouraged;
-however, the author would like to be notified of any such distributions.
-
-
-All translations, derivative works, or aggregate works incorporating
-Linux HOWTO documents must be covered under this copyright notice.
-That is, you may not produce a derivative work from a HOWTO
-and impose additional restrictions on its distribution.
-Exceptions to these rules may be granted under certain conditions;
-please contact the Linux HOWTO coordinator at the address given below.
-
-
-In short, we wish to promote dissemination of this information through
-as many channels as possible. However, we do wish to retain copyright
-on the HOWTO documents, and would like to be notified of any plans to
-redistribute the HOWTOs.
-
-
-If you have any questions, please contact Tim Bynum,
-the Linux HOWTO coordinator, at
-linux-howto@sunsite.unc.edu
-via email.
-
-
-
-; __Updates from v1.3:__:
-
-
-
-
-*Updated my e-mail address.
-My address has changed from
-r3mdh@imperium.net
-to
-r3mdh@raex.com.
-*
-
-; __Updates from v1.:__:
-
-
-
-
-*Updated my e-mail address.
-My address has changed from
-r3mdh@dax.cc.uakron.edu
-to
-r3mdh@imperium.net.
-*
-
-
-
-
-Now...........on with the show!
-
-
-
-
-!!1. Introduction
-
-
-
-
-!!2. The Procedure
-----
-
-!!1. Introduction
-
-
-After many days of struggle and frustration,
-I finally figured out how to accomplish what I wanted.
-I have a 1.2GB HD and 16MB RAM PC. I wanted to have 4 operating systems
-on my system: MSDOS v6.22, Windows 95, OS/2, and Linux.
-Until now, I have found no Linux HOWTO to perform the task of getting
-each and every one of these operating systems on one machine and still
-have the ability to boot each (it is possible to write the OSs to different
-partitions, but getting them to boot and not hang at the ``Starting MSDOS''
-message, for example, is something that I had to figure out.
-Well, after much trial and error,
-I have come up with the following recipe to perform this feat:
-
-
-Before I begin going through the procedure step-by-step,
-let me first clue you in on what I eventually wish to accomplish:
-
-
-<NAME> <SIZE> <LABEL> <PARTITION NUMBER>
----------------------------------------------------------------------
-MSDOS v6.22 11MB P1 Primary Partition 1
----------------------------------------------------------------------
-Windows '95 350MB P2 Primary Partition 2
----------------------------------------------------------------------
-OS/2 Boot Manager 2MB P3 Primary Partition 3
----------------------------------------------------------------------
-DOS/Win Data 511MB E1 Primary Partition 4
-OS/2 Warp 3.0 127MB E2 Extended into 4 logical
-Linux Slakware 3.2 Swap XMB E3 drives (sub-partitions)
-Linux Slakware 3.2 Native 219-XMB E4 labeled E1-E4
----------------------------------------------------------------------
-
-
-What does all of this mean? Well, let me talk you through it.
-First, we need to use up all 4 partitions on our 1 harddrive.
-Partitions 1 through 3 are PRIMARY partitions.
-We will store MSDOS, Win95 and the OS/2 Boot Manager
-(which inefficiently requires its OWN partition) on these partitions,
-respectively. We then have 1 partition left.
-But, we want to have a drive just for DOS/Win95 data
-(this gives us a large place to dump all of those ZIP files
-we so often download from the Internet as well as a place to store
-Win95 programs and data that we don't have enough room for
-on the Win95 partition),
-OS/2, and Linux (both a Linux native as well as Linux swap partition).
-
-
-Now, I've been getting a lot of grief through e-mail lately about
-why I have a separate partition for Win95 and one for DOS
-and one for Win95/DOS data.
-Here's my answer: having separate Win95 and DOS partitions isn't for everyone.
-Perhaps you don't even use DOS anymore.
-Perhaps Windows '95 is your answer for any software written for a Microsoft
-platform. Well, there are some people out there who still use DOS and
-can't live without it. Whether it's because DOS can run 16-bit applications
-faster and more efficient, or because the certain DOS program
-that you may use won't run under a Windows environment
-(the Gravis Ultrasound soundcard setup program comes to mind),
-you simply MUST be able to boot into DOS from time to time.
-This HOWTO was written with those people in mind.
-If you still have difficulty swallowing the fact that the word
-``MSDOS'' is included in this HOWTO, then feel free to sit down and write
-a Linux-Win95-OS/2-only HOWTO. :)
-
-
-Now, back to the diagram above.
-Like I said, we have 1 partition to cram 4 things onto:
-DOS/Win data, OS/2, and Linux native & swap.
-This can be done by creating what are called logical drives
-(or logical partitions, depending on which book you read)
-within the 1 primary partition.
-When we create these logical drives within a primary partition,
-we refer to this primary partition as an EXTENDED PARTITION
-(because it is extended beyond the scope of a single,
-primary partition and instead contains up to 3 subpartitions
-(logical drives)). Confused? If so, you might want to read the OS/2 manual
-about this topic. It will explain it better than I have
here.
-
-
-Now, you might be scratching your head saying
-``he wants to cram 4 things onto that extended partition,
-but he just got done saying we can only have 3 subpartitions to put them on!''
-This is true, at least in MS-DOS's and OS/2's reasoning.
-But, here one of the many powerful advantages to Linux comes to save the day.
-Linux can create more than 3 subpartitions on an extended drive.
-Just how many, I don't know. But, I know it can create at LEAST 4
-(what we need). So, when we go through the steps of the installation
-procedure below, keep in mind that when we create partitions using an MSDOS
-or OS/2 program, we will only create 3 logical drives.
-Then, when we go to Linux, we will split one of them into two.
-Essentially, you can think of it as ``tricking'' MSDOS and OS/2
-into seeing only 3 logical drives, but in reality (and to Linux),
-there will be 4.
-----
-
-!!2. The Procedure
-
-
-
-
-; __NOTE:__:
-
-Numbers in parentheses were the number of megabytes
-that I used on my 1.2GB harddrive.
-
-Now, let's move on to the step-by-step procedure:
-
-
-#Run view.exe on the Linux Slakware CD
-and create the Linux Boot and Linux Root floppies.
-For some reason, the Linux bootstrap program calls the Root disk
-the Ramdisk floppy. I'll refer to this disk from now on
-as the Ramdisk (Root) floppy.
-#
-
-#Backup any information that you wish to keep to tape
-(or whatever media you have available to you).
-#
-
-#Boot your original MSDOS installation floppy, disk 1.
-#
-
-#When ``Starting MSDOS'' appears,
-press F5 to bypass config.sys and autoexec.bat.
-#
-
-#Run a:\fdisk.exe.
-#
-
-#Delete all partitions
-(you have been warned:
-DELETING / MODIFYING OF ANY PARTITION
-WILL RESULT IN THE LOSS OF ALL DATA ON THE DISK!).
-#
-
-#Add an MSDOS primary partition. (11MB)
-#
-
-#Format this partition.
-#
-
-#Run a:\setup.exe to install MSDOS on this partition.
-#
-
-#Boot OS/2.
-#
-
-#Select Advanced installation.
-#
-
-#Run FDISK.
-(this will eventually popup for you if you run through
-the OS/2 installation)
-#
-
-#Add 1 primary partition after the MSDOS one.
-This will become our Windows 95 partition. (349MB)
-#
-
-#Add the Boot Manager to the next primary partition. (2MB)
-#
-
-#Add an extended partition.
-#
-
-#Add a logical drive to the extended partition.
-This will become the data portion of our MSDOS system. (511MB)
-#
-
-#Add another logical drive to the extended partition.
-This will become our OS/2 HPFS (``High Performance File System'')
-partition. (127MB)
-#
-
-#Add 1 last logical drive to the extended partition
-using the remaining space on the drive.
-This will later become 2 partitions under Linux mdash
-our swap partition and our native Linux partition.
-But, since OS/2 (and DOS as well) can only write up to
-6 partitions per drive (3 primary and 3 logical drives
-housed within 1 extended partition), we have to create only one
-at this time. And we DO have to create this partition.
-Don't leave this as free space and expect Linux to be able
-to create the two partitions. Due to the way that OS/2's FDISK works,
-where you add your last logical drive to the extended partition
-marks the END of the extended partition.
-You can__not__ add partitions beyond this point.
-So, in other words, creating this one last logical drive serves
-as a space-filler for Linux. Later we will delete this partition
-and add 2 new ones in the space that it once took up.
-#
-
-#Add partitions 1, 2, and 5 to the Boot Manager.
-#
-
-#Make partition 5 installable.
-Your FDISK screen should now look like this
-(or something like this):
-
-----
-
-FDISK
-Disk 1
-___________________________________________________________________________
-Partition Information
-Name Status Access FS Type MBytes
-___________________________________________________________________________
-MSDOS Bootable C: Primary FAT 11
-WIN 95 Bootable : Primary FAT 350
-Startable : Primary BOOT MANAGER 2
-None D: Logical Unformatted 511
-OS/2 Installable E: Logical FAT 127
-None F: Logical Unformatted 219
-
-----
-
-
-#
-
-#Continue on with the OS/2 installation process.
-#
-
-#Reboot and select partition 2 (Windows 95) from the Boot Manager.
-#
-
-#When the missing operating system error pops up,
-boot your MSDOS installation disk.
-We selected this partition in order to ``hide'' the MSDOS partition.
-OS/2's Boot Manager is a bit strange. For every bootable partition
-you have (in our case, MSDOS and OS/2), you can have only one of
-them visible at a time. What this means is that if you boot into
-one partition, MSDOS for example, the other partition (Win95) is
-invisible. The MSDOS partition and Win95 essentially SHARE a drive
-letter. That's why under ``Access'' above, MSDOS has drive letter C
-and Win95 has no drive letter. Under the current circumstances,
-MSDOS is visible with drive letter C and Win95 is invisible with
-no drive letter. If we were to boot Win95, the opposite would be true:
-MSDOS would be invisible with no drive letter and Win95
-would be visible with drive letter C.
-__An invisible drive cannot be accessed AT ALL.__
-If you wish to copy files between two drives
-in which only one can be visible at one time, you must use a common
-(non-bootable) drive to swap files.
-In our case, the DOS/Win95 Data drive (drive D 511MB above)
-will serve as this common drive. You might be asking
-``Won't we eventually be booting Linux also?''.
-The answer is yes, we will. But let's not get into that just yet.
-#
-
-#Install MSDOS to Partition 2
-(we'll need this in order to install Windows 95).
-#
-
-#Boot Partition 2.
-#
-
-#Install Windows 95 to this partition (if you are running the upgrade
-version of Win95, you may need to have your Win3.1 installation disk 1
-ready to insert).
-#
-
-#Boot Partition 1.
-#
-
-#Format Partition 4.
-#
-
-#Restore DOS data from tape (if any) to partitions 1 and 4.
-#
-
-#Boot the Linux Boot Floppy.
-#
-
-#Follow up with the Linux Ramdisk (Root) floppy.
-#
-
-#When you log in as root and get to the # prompt,
-type ``fdisk'' and press enter.
-#
-
-#Delete the last partition (the one we created in step 18).
-#
-
-#Add 1 16MB partition and tag it as filesystem type Linux Swap. (17MB)
-#
-
-#Add 1 last partition with the remaining cylinders on the disk and tag
-this as filesystem type Linux native. (198MB)
-#
-
-#Write the changes to the boot sector and reboot.
-#
-
-#When you get to the # prompt again, run setup.
-#
-
-#Install Linux to the last partition.
-#
-
-#When you install LILO, be sure to install it to the root of the last
-partition (NOT to the MBR, as you will destroy all of your previous
-work in this HOWTO if you do so). Add only the last partition to
-LILO and set the timer to zero. By doing this, when you select Linux
-from the OS/2 Boot Manager, LILO will activate
-and will then boot Linux from the logical drive on the extended
-partition. Since Linux is the only partition
-that we wish to activate from LILO, we don't need a timer on it
-(unless you have more than one Kernel that you wish to load.
-In this case, you may want to set the timer to something more
-than 0 seconds).
-#
-
-#Activate the Linux swap partition
-(refer to the Linux Installation and Getting Started Manual
-by Matt Welsh for this).
-#
-
-#Boot OS/2.
-#
-
-#Run FDISK.
-#
-
-#Add Linux to the Boot Manager using the Linux NATIVE partition
-(type 83 __not__ 82!).
-#
-
-Your FDISK screen should now look like this (or something like this):
-
-----
-
-FDISK
-Disk 1
-___________________________________________________________________________
-Partition Information
-Name Status Access FS Type MBytes
-___________________________________________________________________________
-MSDOS Bootable C: Primary FAT 11
-WIN 95 Bootable : Primary FAT 350
-Startable : Primary BOOT MANAGER 2
-None D: Logical FAT 511
-OS/2 Bootable E: Logical HPFS 127
-None : Logical Type 82 17
-Linux Bootable : Logical Type 83 198
-
-----
-
-...And you're done!
-
-
-Send any comments/suggestions/problems (as a last resort, please!)
-to me at
-r3mdh@raex.com.
-
-
-Mike Harlan,
-11 NOV 1997
-----
+Describe [HowToLinuxDOSWin95OS2]
here.
