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Newer page: version 2 Last edited on Friday, 27 August 2010 23:30:57 by CyberLeo Revert
Older page: version 1 Last edited on Friday, 27 August 2010 23:20:34 by CyberLeo Revert
@@ -1,11 +1,80 @@
 There are two ways of creating a bootable DOS filesystem: 
 * [Using MS-DOS and 'sys' in ~DosBox|#DosBox] 
 * [Using FreeDOS and 'sys-freedos.pl'|#sys-freedos.pl] 
+  
+The methods documented below will create a 2.88MB boot floppy (as 1.44 often hasn't enough space to hold the bios updates for modern motherboards).  
  
 ---- 
  
 !! #[DosBox] 
+  
+* Make sure that you have a copy of DosBox and a copy of a Windows 98 MS-DOS boot floppy.  
+  
+* Create a directory to hold the disk images, so that you don't lose them  
+<verbatim>  
+mkdir ~/boot  
+cd ~/boot  
+</verbatim>  
+  
+* Create a blank 2.88MB floppy image and format as FAT12  
+<verbatim>  
+dd if=/dev/zero of=floppy.img bs=1024 count=2880  
+mkdosfs -vvv floppy.img  
+</verbatim>  
+  
+[Upload:CyberLeo/2.88Boot-1.png]  
+  
+* Launch ~DosBox  
+<verbatim>  
+dosbox  
+</verbatim>  
+  
+* Within ~DosBox, mount the directory containing the images, and issue a boot command to boot the Windows 98 MS-DOS boot floppy  
+<verbatim>  
+mount c ~/boot  
+c:  
+boot win98s~1.img floppy.img  
+</verbatim>  
+  
+[Upload:CyberLeo/2.88Boot-2.png]  
+[Upload:CyberLeo/2.88Boot-3.png]  
+  
+* After Windows 98 MS-DOS boots, you will be dropped to a DOS prompt. Copy the system over to the B: disk as usual  
+<verbatim>  
+sys b:  
+</verbatim>  
+  
+[Upload:CyberLeo/2.88Boot-4.png]  
+[Upload:CyberLeo/2.88Boot-5.png]  
+  
+* The new disk image should now be bootable, and fully compatible with memdisk (you don't really have a real 2.88MB floppy drive lying around, do you?)  
  
 ---- 
  
 !! #[sys-freedos.pl] 
+  
+You will need  
+* mtools  
+* mkdosfs from dosfstools  
+* kernel.sys and command.com from the [FreeDOS distribution|http://www.freedos.org/freedos/files/] (fdbasecd.iso:/freedos/setup/odin)  
+* [sys-freedos.pl|KnowledgeBase/Scripts/sys-freedos.pl] from the [sys-freedos|http://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/dos/sys/sys-freedos-linux/] tarball  
+** This requires perl, and probably also nasm to build the boot block  
+  
+<code brush="bash">  
+# Make a file  
+truncate -s $(( 2880 * 1024 )) floppy.img  
+  
+# Add FAT12 filesystem  
+mkdosfs -vvF12 -n DOSBOOTFLOPPY floppy.img  
+  
+# Copy in the FreeDOS files  
+mcopy -i floppy.img kernel.sys command.com ::  
+  
+# Hide them, for consistency  
+mattrib -i floppy.img +H +S ::kernel.sys ::command.com  
+  
+# Install boot block  
+sys-freedos.pl --disk=floppy.img  
+</code>  
+  
+* The new disk image should now be bootable  

version 2

There are two ways of creating a bootable DOS filesystem:

The methods documented below will create a 2.88MB boot floppy (as 1.44 often hasn't enough space to hold the bios updates for modern motherboards).

DosBox

  • Make sure that you have a copy of DosBox? and a copy of a Windows 98 MS-DOS boot floppy.
  • Create a directory to hold the disk images, so that you don't lose them
mkdir ~/boot
cd ~/boot
  • Create a blank 2.88MB floppy image and format as FAT12
dd if=/dev/zero of=floppy.img bs=1024 count=2880
mkdosfs -vvv floppy.img

  • Launch DosBox
dosbox
  • Within DosBox, mount the directory containing the images, and issue a boot command to boot the Windows 98 MS-DOS boot floppy
mount c ~/boot
c:
boot win98s~1.img floppy.img

  • After Windows 98 MS-DOS boots, you will be dropped to a DOS prompt. Copy the system over to the B: disk as usual
sys b:

  • The new disk image should now be bootable, and fully compatible with memdisk (you don't really have a real 2.88MB floppy drive lying around, do you?)

sys-freedos.pl

You will need

  • mtools
  • mkdosfs from dosfstools
  • kernel.sys and command.com from the FreeDOS distribution (fdbasecd.iso:/freedos/setup/odin)

  • sys-freedos.pl from the sys-freedos tarball

    • This requires perl, and probably also nasm to build the boot block
# Make a file
truncate -s $(( 2880 * 1024 )) floppy.img

# Add FAT12 filesystem
mkdosfs -vvF12 -n DOSBOOTFLOPPY floppy.img

# Copy in the FreeDOS files
mcopy -i floppy.img kernel.sys command.com ::

# Hide them, for consistency
mattrib -i floppy.img +H +S ::kernel.sys ::command.com

# Install boot block
sys-freedos.pl --disk=floppy.img
  • The new disk image should now be bootable