RE: RE: [Plex86-devel] running win95 bochs image in plex86

[Drew Northup]

You can install inside of bochs (which would actually happen at a reasonable
rate) if you do it right.  What you need to do is the following:
(1)Make the fresh raw, blank disk image:
        dd if=/dev/zero of=/path/to/disk/image.img count={(size in bytes)/512}
(2)start bochs, tell it use use the blank disk image as the hdd, the raw
floppy /dev/fd0 as the floppy drive, and the raw cd-rom /dev/cdrom as the
cdrom [yes, you can do this, if you run as root ;-) ]
(3)install Win95 into the disk image as if you were using the guest machine
directly [with the obvious differences, of course]; you may wish to use
something to partition the disk first, mind you.
(4)configure Win95 for the bochs virtual machine, plex86 is roughly the same
virtual machine
(5)shutdown bochs
(6)change the plex86 configuration file to use the disk image that you just
installed to
(7)boot plex86, and spend the time waiting for it to boot appeasing whatever
God you suppose helps Windows boot successfully
(8)play with the new Windows 95 install!

Installing Win95 inside of plex86 directly may work, but I doubt it.

Drew Northup, N1XIM


> -----Original Message-----
> From: address@hidden
> [mailto:address@hidden Behalf
> Of rohitash panda
> Sent: Tuesday, April 08, 2003 2:00 AM
> To: address@hidden
> Subject: Re: RE: [Plex86-devel] running win95 bochs image in plex86
>
>
> hi drew,
>       What you are saying may be correct because iam not aware of
> the internals of plex86.Iam going by the way its written in the
> user guide , that an image of win95 for bochs will boot in
> plex86.Now iam not able to do that, that was my doubt.I just
> mentioned about the failure to boot other systems , because i
> suspected there might be some similarity with all the
> failured.They may fail but the win95 image of bochs should have
> worked.And i guess there is no way to install win95 in plex86, i
> guess it dosent work.
>
> thanks for your ideas and suggestions
>
> rohit
>
> On Mon, 07 Apr 2003 Drew Northup wrote :
> >The Images that come with the latest versions of Bochs DO NOT
> >WORK in
> >plex86.  Plex86 expects to find a FULL DISK IMAGE, and not what
> >the bochs
> >disk images typically look like (just a partition and it's boot
> >block).
> >This means that plex86 images often have an MBR, a partition
> >table, and a
> >set of internal partitions--with their associated structures.
> >This also
> >means that to install software in plex86 (assuming that it can be
> >done)
> >you'd need to do so just like you would on real hardware--using
> >the install
> >disks.
> >
> >Drew Northup, N1XIM
> >
> >
> > > -----Original Message-----
> > > From: address@hidden
> > >
> >[mailto:address@hidden
> >Behalf
> > > Of rohitash panda
> > > Sent: Monday, April 07, 2003 5:42 AM
> > > To: address@hidden
> > > Subject: [Plex86-devel] running win95 bochs image in plex86
> > >
> > >
> > > hi,
> > >    pasted below are the errors i get while running a win95
> >image i
> > > created in bochs.i was getting the same
> > > problems while using a win98 image created in bochs ( though
> >i
> > > came to know from a gentleman that win98
> > > currently cannot boot in plex 86) and i was also getting this
> >same
> > > error while i tried to boot a linux image
> > > i got from the bochs website.So i presume this error is not
> > > related to the images but its going wrong
> > > somewhere else.I have tried to find out but could not till now
> >,
> > > so anybody has any knowledge why it is
> > > behaving like this ??
> > >   I am sending all the errors i get and also the config
> >file.
> > >
> > >
> > > ./plex86 -f ../conf/win95
> > > Processing command-line options
> > > Opening VM (/dev/plex86)
> > > Processing config file ../conf/win95...
> > > Allocating 32MB of physical memory in VM
> > > Mapping virtualized physical memory into monitor
> > > Zeroing virtualized physical memory
> > > Mapping monitor print buffer into user mem.
> > > [CMOS ] <INFO>  Setting initial clock to: Tue Apr  8
> >13:51:49
> > > 2003
> > > [DMA  ] <INFO>  channel 4 used by cascade
> > > [XGUI ] <INFO>  test_alloc_colors: 16 colors available out of
> >16
> > > colors tried
> > > [XGUI ] <INFO>  font 8 wide x 16 high, display depth = 16
> > > [VGA  ] <INFO>  interval=90000
> > > [VGA  ] <INFO>  VBE Bochs Display Extension Enabled
> > > [KBD  ] <INFO>  Pasting not supported yet in Plex86
> > > [HD   ] <INFO>  hd0: '/root/bochs-2.0.2/win95.img'
> > > [HD   ] <INFO>  Boot device will be 'c'
> > > [HD   ] <INFO>  Floppy boot signature check is enabled
> > > ROM: loading image '../bios/BIOS-bochs-latest' @ 0xf0000
> >(65536
> > > bytes)
> > > ROM: loading image '../bios/VGABIOS-lgpl-0.3a' @ 0xc0000
> >(26106
> > > bytes)
> > > Setting prescan depth to 3
> > > prescan on
> > > Processed 75 lines of config file '../conf/win95'
> > > Initializing plugins
> > > Running VM
> > > ::init_monitor OK -----------------
> > > nexus_size = 0x24E
> > >
> > > [KBD  ] <INFO>  Pasting not supported yet in Plex86
> > > [VGA  ] <INFO>  VBE known Display Interface b0c0
> > > [VGA  ] <INFO>  VBE known Display Interface b0c0
> > > [VGA  ] <INFO>  VBE known Display Interface b0c0
> > > [VGA  ] <INFO>  VBE disabling
> > > [VGA  ] <INFO>  char map select: #1=0 / #2=0 (unused)
> > > [VGA  ] <INFO>  VBE known Display Interface b0c0
> > > [HD   ] <ERROR> device set to 1 which does not exist
> > > [HD   ] <ERROR> device set to 1 which does not exist
> > > [HD   ] <ERROR> device set to 1 which does not exist
> > > [HD   ] <ERROR> device set to 1 which does not exist
> > > [HD   ] <ERROR> device set to 1 which does not exist
> > > [HD   ] <ERROR> device set to 1 which does not exist
> > > [HD   ] <ERROR> device set to 1 which does not exist
> > > [HD   ] <ERROR> device set to 1 which does not exist
> > > [HD   ] <ERROR> device set to 1 which does not exist
> > > [HD   ] <INFO>  enabling LBA mode
> > >
> > > ----------------------------------------------------
> > > This is the error which gets displayed.
> > >
> > > IDE0-0 : Generic 1234 ATA-2 Hard-disk device
> > >
> > > Booting from Hard Disk ...
> > >
> > > Disk I/O Error
> > > Replace the disk and then press any key ...
> > >
> > > ---------------------------------------------------------
> > > conf file :
> > >
> > >
> >####################################################################
> > > # This is an example plex86 configuration file
> > >
> >####################################################################
> > >
> > >
> > >
> >####################################################################
> > > # Memory settings
> > >
> >####################################################################
> > >
> > > # number of megabytes for vm
> > > memory = 32
> > >
> > >
> > >
> >####################################################################
> > > # Plugins
> > >
> >####################################################################
> > >
> > > plugin = ./plugins/bochs/plugin-bochs.so
> > >
> > > bochs-opt boot: c
> > > bochs-opt diskc: file="/root/bochs-2.0.2/win95.img",
> >cyl=812,
> > > heads=16, spt=63
> > > #bochs-opt diskc: file="/root/bochs-2.0.2/win95.img",
> >cyl=1015,
> > > heads=16, spt=63
> > > #bochs-opt floppya: 1_44=../../1.44a, status=inserted
> > > bochs-opt keyboard_serial_delay: 50
> > > bochs-opt floppy_command_delay: 500
> > > bochs-opt vga_update_interval: 90000
> > > bochs-opt mouse: enabled=0
> > > bochs-opt private_colormap: enabled=0
> > > bochs-opt i440fxsupport: enabled=0
> > > bochs-opt newharddrivesupport: enabled=1
> > > bochs-opt ips: 1000000
> > > #bochs-opt time0: 938581955
> > >
> > > plugin = ./plugins/bridge/bridge.so
> > > plugin = ./plugins/bochs/iodev/cmos.so
> > > plugin = ./plugins/bochs/iodev/dma.so
> > > plugin = ./plugins/bochs/iodev/system.so
> > > plugin = ./plugins/bochs/iodev/vga.so
> > > plugin = ./plugins/bochs/iodev/serial.so
> > > plugin = ./plugins/bochs/iodev/parallel.so
> > > plugin = ./plugins/bochs/iodev/keyboard.so
> > > plugin = ./plugins/bochs/iodev/floppy.so
> > > plugin = ./plugins/bochs/iodev/harddrv.so
> > >
> > > CMOSChecksum
> > >
> > > # The system BIOS
> > > load-rom: file=../bios/BIOS-bochs-latest, address=0xf0000
> > >
> > > # The VGA BIOS
> > > load-rom: file=../bios/VGABIOS-lgpl-0.3a, address=0xc0000
> > >
> > >
> > >
> >####################################################################
> > > # Debugging settings
> > >
> >####################################################################
> > >
> > > # syntax for disassembly
> > > db_syntax = at&t
> > >
> > >
> > >
> >####################################################################
> > > # VM tweaks
> > >
> >####################################################################
> > >
> > > # Maximum depth that the scan-before-execute code will try
> > > # to recursively prescan code in the current code page, by
> > > # following intra-page branches.
> > > prescan: depth = 3, ring3 = on
> > >
> > > any help will be highly appreciated.
> > >
> > > rohit
>
>
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