When to use OS 7 and when to use OS 8 on my Centris 650?

[1200XL M.U.L.E.]

RAM Doubler - yes, I think the original hard drive had that installed. Unfortunately, the hard drive crashed.

 

[Cory5412]

RAM doubler was a third party replacement to the memory manager. That's, I'd argue, something to give a go a little later on. The built-in virtual memory on 7.6.1 and 8.1 will work fine.

And yeah, if you have a working CD-ROM drive (I realize that's a bit of a presumption on my part!) I'd say just burn all the discs. There's of course other ways to do this, you could use a 7.5 network access disk and an appleshare-over-appletalk server, for example.

 

[Paralel]

@Byrd What percentage of my overall memory should I set to be virtual, in general?

@Cory5412 Good suggestion on trying them all! Do you mean to burn CDs of the installed operating system or of the installation sources?

I'd just burn a copy of the Apple Legacy Recovery CD 68k - 1999. It should have every version of every OS you'd be interested in trying between 7.1 and 8.1, along with all the ancillary system extensions and control panels you might want.

It's my go to OS installation disk for any 68k Mac that could run 7.0 and up.

 

[Phipli]

What percentage of my overall memory should I set to be virtual, in general?

Set it to 1MB on top of your installed RAM for what he's talking about - just having it on.

just use ram doubler instead of virtual memory

Not in this case, he isn't short of memory, just enabling the feature for the change in how memory management is done in Mac OS.

 

[1200XL M.U.L.E.]

I enabled virtual memory from a control panel in OS 8.1. The panel would not allow me to enable anything less than 33MB of virtual memory. Doing so did bring down the memory allocated to the OS to 8MB. That was significant!

@Paralel Is this CD available on the Macintosh Garden or Macintosh Repository? I will be going out this weekend (probably tomorrow) to get some CD-Rs for making boot discs.

 

[Paralel]

I believe it is available on both

 

[mdeverhart]

Try one of the images on this page:

Apple Legacy Software Recovery CD - Macintosh Garden

This is Apple Legacy Recovery disc dated October 1999. This CD includes most items designed for classic Macintosh computers such as Mac OS, A/UX software, peripherals, and applications. It also includes the software for Apple II, Apple Lisa, Apple Newton, drivers for DOS/Windows, and more.

macintoshgarden.org

 

[Paralel]

Try one of the images on this page:

Apple Legacy Software Recovery CD - Macintosh Garden

This is Apple Legacy Recovery disc dated October 1999. This CD includes most items designed for classic Macintosh computers such as Mac OS, A/UX software, peripherals, and applications. It also includes the software for Apple II, Apple Lisa, Apple Newton, drivers for DOS/Windows, and more.

macintoshgarden.org

Huh, I didn't realize that their version was different from the one I have. I have the May 1999 version. I guess I should provide mine if I compare the two and find they are different.