Installation troubleshooting
D1131732220
Auriel (82.182.149.46)
#Please first read the [Installer Errata] to see if you have hit a
#known bug; then if after going thru this page you still have a
#problem you can reproduce, please add it to the list of known
#problems.
#
#The initial bootstrap of a new operating system on new hardware is
#often problematic. Here follow some suggestions that might help you
#clear some hurdles.
#
#First, check the [supported PC hardware] list to make sure the
#hardware you're running is supported.
#
#Your plan9.ini file must be an accurate description of the machine.
#The first line of defense is therefore to look at the plan9.ini file
#and edit it. The floppy is a DOS floppy, so you should be able to
#edit plan9.ini from a Windows machine or other system.
#
#9load(8) is the program that loads and starts the kernel. It needs
#to find and load the kernel, based on plan9.ini and the hardware it
#can discover. The last line 9load prints before loading the kernel is
#! entry: 0x80100020
#
#If you don't see that line, then your problem is with 9load. In this
#case, you can turn on debugging by typing a control-R at any time
#while it's running. Even if the debugging output doesn't help you,
#what's printed might help others, so make notes.
#
#If there are problems during the boot of the CD, try some
#combinations of the boot parameters: sdXX!cdboot!9pcflop.gz, where:
#C0 is Primary Master, C1 is Primary Slave, D0 is Secondary Master
#and D1 is the Secondary Slave.
#
#On some Linux systems and running in vmware4, it seems 9load hangs
#at bootup, before it finds plan9.ini. When 9load starts running at
#physical address 0x10000, and later at 0x80010000, in order to find
#configuration information, it searches all units on devices fd and
#sdCn, in that order, for a file called plan9\plan9.ini or plan9.ini
#on a partition named dos or 9fat. Unfortunately, if you are running
#vmware 4 under GNU/Linux, and you have loaded the scsi-ide emulation
#layer in linux (maybe to use your CDRW), 9load will probably hang.
#In order to solve the problem, you need to use an iso image for you
#cd drive virtual device, making sure the iso image does not contain
#a dos partition. VMware comes with a linux.iso sample image
#(/usr/{whatever}/lib/vmware/isoimages/linux.iso), which can be used
#in this rare situations.
#
#The first line the kernel prints is the CPU identification. For
#example, you might see:
#! cpu0: 40 MHz GenuineIntel 386SX
#
#If this (or a similar) line is printed, your problem is with the
#kernel rather than 9load. (If you see the entry: line above but not
#the cpu0: line, it could be either 9load or the kernel causing
#trouble.)
#
#If the kernel hangs after printing "kfs...version...time...",
#something in the startup scripts has failed. To see each command
#before it is executed, add the line "debug=1" to your plan9.ini.
#Also, while the kernel is hung, press the following: Ctl-t, Ctl-t,
#p. This will print a process listing. Look for the few lines with
#the largest numbers in the first column, and note their names (the
#names look like kfs, ipconfig, genrandom). That will help determine
#which program is hanging.
#
#If the kernel reboots before you get a chance to read what is on the
#screen, you might try attaching a serial console and adding the line
#"console=0" or "console=1" to send kernel output to DOS's COM1 or
#COM2 as well as the screen. The serial console will run at 9600
#baud, 8-bits, no parity, and 1 stop bit.
#
#VIDEO PROBLEMS
#
#If the kernel gets running but the VGA doesn't turn on, you may need
#to play with the screen settings.
#
#If the screen goes black and you see nothing, aux/vga (see vga(8))
#thinks it recognizes your video card, but either the monitor
#settings being used are incorrect or aux/vga doesn't really know
#everything it needs to program your card. In this case you might try
#a smaller screen resolution, starting at 640x480x8 and working up. A
#640x480 screen is perfectly adequate for the installation. If you
#are using an LCD, you should use the exact size of the LCD; aux/vga
#sometimes has problems stretching smaller resolutions on LCDs.
#
#If the kernel doesn't switch into VGA mode but continues to run in
#CGA mode, along with a complaint along the lines of "no frame
#buffer" and a shell prompt (%), the system doesn't recognize your
#video card at all.
#
#Aux/vga will have left a hex dump of your VGA BIOS memory on the
#screen VDA cards are identified by matching text in their bios with
#the list of know strings in /lib/vgadb. If your card is not
#identified it may only be because it has different text in its bios
#(E.G. a different copyright message), or it may be wholy unsupported
#(see [Supported PC hardware]).
#
#Look through the strings in the hex dump for a text string which
#describes your card, write this down together with the address it
#starts at. Now create a RAM /tmp file system and edit /lib/vgadb
#using the venerable ed(1) editor. Search for a similar entry, and
#append your new one after it.
#
#! ramfs
#! ed /lib/vgadb
#! 28683
#! /Stealth/
#! 0xC0045="Stealth 64 Vers. 1.05"
#! a
#! 0xC0045="Stealth 64 Vers. 2.03"
#! .
#! w
#! 28712
#! q
#
#You will now be able to restart the install process by typing
#
#! aux/vga -l $resolution^'x'^$depth
#! rio -i /bin/inst/gui
#
#If your Card is not supported but you can find out the exact chip
#type -- such as by looking in the hardware manual, the Display
#Properties in Windows 95, 98, or NT, or the configuration
#information used by a Unix-like system -- see if /lib/vgadb supports
#it. You can then add an entry for that device as above, however
#adding an BIOS string to a random chip type type is unlikely to be
#successfull.
#
#If you have other video cards, it can't hurt to try a different one.
#
#Before invoking aux/vga to start the VGA, the floppy boot script
#writes the output of "aux/vga -vip" to the file vgainfo.txt in the
#root directory of the floppy disk. It also writes the output of
#"pci" to the file pci.txt. Both are useful for debugging
#unrecognized cards.
#
#The boot disk uses the vgadb file from the root directory of the
#floppy disk as /lib/vgadb, to make it possible to edit on other
#systems. Note that vgadb now identifies cards both using BIOS
#strings and using PCI identifiers, the latter being the preferred
#method of identification since it is more general.
#
#Sometimes it suffices to add some information to /lib/vgadb; if you
#find this to be true, please let us know so we can update our master
#database.
#
#The Installer can run in text mode if your video card is not
#detected, but for reference here is an old guide of how to do a
#manual install in text mode:
#
# * [http://www.darkuncle.net/plan9/without_rio.txt] (mirror)
# * [http://www.proweb.co.uk/~matt/plan9/without_rio.txt] (mirror).
#
#MEMORY PROBLEMS
#
#If your system prints "no physical memory" during the installation
#but you have at least 32MB of memory, then perhaps your BIOS is not
#reporting it in a way that Plan 9 understands. Some BIOSes have an
#option to "report alternative memory". Try toggling it. (If that
#doesn't work, the *maxmem= entry in plan9.ini(8) will override
#anything the BIOS reports.)
#
#BOOT LOADER
#
#If you encounter troubles booting plan9 from lilo, see
#[troubleshooting plan9 & lilo].
#
#As a last resort, look in the [comp.os.plan9 archives |
#http://lists.cse.psu.edu/archives/9fans], ask in comp.os.plan9, or
#mail the Bell Labs Plan 9 trouble line 9trouble@plan9.bell-labs.com.
#
#If you mail 9trouble, please include the contents of plan9.ini(8),
#vgainfo.txt, and pci.txt from your boot floppy, as well as any
#hardware information gleaned from other sources.
#
#Finally, if you resolve a problem via some method not listed here,
#edit this page (see bottom) to tell the world about it!
#
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