Week 4, February 18

VMware

	* Virtual Devices
		virtual disk
		virtual cdrom
		
	* Virtual Machine
		processes
		timer interrupts
	
	TRAP/response
	Two traps we need to handle differently:
		* disk drive (also monitor!): access virtual disk instead!!!
		* timer: must cede control to parent
	Strategy: move disk-response code to "user space", not kernel.
	Actual i/o call still a trap, this time with new trap handler
	
	Timer interrupt: set things up to check next virtual process,
	but exit to host machine
	
	x86 problems:
		instructions that behave differently in kernel mode
		instructions that give status of hardware
		
	user space: user code + library code
	kernel space
		recompilation necessary
	DMA
	

==================

Typical linux session

	openOffice
	directories, folders
	
	shared folders
	
	terminal, sh/bash
		(cygwin)
	

==================================================

Installation:

1. Create machine, 256MB ram, 3GB disk, or more
(128 MB ram did not work!)

2. In summary window, click on cdrom and choose edit.
Connect the CDROM to the ubuntu .iso file

3. Power up: ubuntu LiveCD should load

4. You should get an Install icon at the upper-left corner,
and a menu bar at the top (sort of mac-style; the actual 
window system is called "gnome", with the g voiced).

5. Try using top_bar => System => Preferences => Screen_Resolution 
to change the resolution, say to 1024x768, or even 800x600.
(Note that the abstract vmware *potential* screen resolution is something
insanely high, so "guest" systems tend to install with very high default
resolutions that can be excessively tedious to scroll.

Guest screen resolutions that are too big will *not* successfully
enter full-screen mode; if full-screen mode fails the most likely
cause is that the guest resolution is too big. (The second most likely
cause is that something isn't working.)

Hint for scrolling: if you click on a menu, and can't scroll the menu 
far enough without scrolling the vmware window, you may have trouble
in that moving the mouse to scroll the vmware window may signal to the
guest that you've clicked somewhere off the scrolling menu, and so 
the menu closes. The workaround: after you click on the menu to open it,
move the mouse straight up (pressing CNTL+ALT if necessary) to get it
into the host zone, *then* move it to the vertical vmware-window scroll bar,
and then move it back into the guest pane.

6. Answer the installation questions. Accept the default answers for the disk
partitioning. That's a step windows omits, although the formatting and 
file-system creation parts are completely analogous.

7. Reboot. Fix resolution again

8. Add vmtools:
(a) choose to mount virtual drive in Summary
(b) within the program, copy, unzip, run using sudo.