DRLEX  I first tried to install Mac OS 9.0 in SheepShaver, but even though the installation worked, it was impossible to boot from the installed OS. I got the blinking question mark, and a systematic crash when attempting to use the "Startup disk" control panel. So I tried 8.5 (upgraded to 8.6) instead, and it works.

Speed is quite good (about as fast as my old 800MHz G3). Overall it's pretty stable, as long as I don't try to do anything fancy like starting QuickTime Player (= instant crash). Clipboard sharing between OS X and the emulated OS is pretty cool, it even transfers images.

However, there are three major nuisances which make working with even the most basic applications awkward. First, the cursors are misaligned (text and crosshair cursors don't click where they are supposed to).

Second, each time I switch between SS and another application, there's like a 10% chance that when I return, SS will not accept any more input from the keyboard or mouse. I have to force quit it even though the OS inside it is still running.

Third, the folder sharing is very basic. Only simple datafork-only files can be shared, and type & creator codes are not transferred. Some file operations in the emulated environment fail when reading these files.

Another minor annoyance: command-clicking has no effect unless I use the middle mouse button of a three-button mouse.

Overall it's a whole lot better than nothing, but it would be even better if these 3 bugs were fixed.  
(Version 2.3)

FVDG  Works fine on my new Mac Pro!!!

Great.

However: more than 512 Mb gives a error (memoru settings)  
(Version 2.3)

E_COMMERCE  Sadly, sharing a folder from the OS X side doesn't fully work - resource forks and such are not preserved properly. For instance, I can't copy a classic application back and forth without it being mangled. Data files appear to work, but type/creator info also appears to be lost, which confuses the OS 8/9 side.

Otherwise, works well. All of my previous stability problems on Intel are gone.

A GUI would be helpful (or some detailed documentation of the config file, which last I checked was a bit scattered and lacking - this may have been remedied since).  
(Version 2.3)

DDAVIDMULLIN  for a command line emulator, your app is A OK, I made it better by downloading a SheepShaverGUI  
(Version 2.3)

VALENS  Wow. Some of you people really are useless without a pretty GUI.

I came across SheepShaver first on Linux. It worked okay for my needs then, which was occasionally running a few old Mac programs. On an old Pentium 3 the speed is tolerable. If you need to run old programs on the new Core Duos, give this a shot.

If you're avoid the command line like the plague and aren't willing to read a few man pages, you might look elsewhere. This is a typical Linux tool - best compiled from source and not designed for the lazy.  
(Version 2.3)

DDAVIDMULLIN  nice idea, a Mac OS 8/9 bootable Mac emulator, on a OS X G4/G5 Mac,

But I have to fiddle with it, like a brokendown tool, not a workhorse( you can depend on, on a day to day bases), It need to be.  
(Version 2.3)

DDAVIDMULLIN  Sheepshaver is really iffy to boot up, but once it boots, The virtual CPU is somewhat semi-stable,

but it needs more RAM.

or a way to change RAM size.

I need a way to make a Disk .img,

or a way to mount it, by Drag n Drop vMac style,

I need a QUI

similar to that of a Basilisk II v17,

or a image drag & drop like that of a "mini vMac"  
(Version 2.3)

TOMIS  Too hard to set up. Requires too much manual user installation. Why can't it just let me select my classic system folder and go?

I'm sure it's great if you have the time to trial-and-error your way through it. But really, could it be that hard to make it more automated and put a GUI on it?

A 2.3 release should be usable, I would consider this a 0.1 tech demo.  
(Version 2.3)