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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.