Changes under Mountain Lion

About SheepShaver, a PPC Mac emulator for Windows, MacOS X, and Linux that can run System 7.5.3 to MacOS 9.0.4.

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temperedreason
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Changes under Mountain Lion

Post by temperedreason »

I'm currently running the Developer Preview 4 of Mountain Lion pre-release software, and I've noticed that something about the new OS has changed the way Sheepshaver reads from the Mac's DVD-rom drive. Now whenever I launch Sheepshaver, it cannot read from my drive, and asks to initialize whatever DVD or CD I have in there. Of course, you can't initialize a read-only disk, so it quickly ejects it and moves on to booting. Re-inserting the disk post-boot does not seem to be recognized by Sheepshaver.

I hope its nothing major :cry:
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Ronald P. Regensburg
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Re: Changes under Mountain Lion

Post by Ronald P. Regensburg »

Indeed, a CD needs to be mounted in OSX before SheepShaver is launched.

SheepShaver will not read DVDs and will read only regular data CD-ROMs, no other CD formats. However, when I try a DVD or audio CD (formats SheepShaver does not read) in OSX 10.7 (Lion), I do not get a dialog asking to initialize the disk, it is simply not mounted in MacOS.

Do the CDs you try work as expected with SheepShaver in 10.7 (Lion)?
temperedreason
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Re: Changes under Mountain Lion

Post by temperedreason »

It does appear that the change is software-related. These are CDs I've attempted. I erroneously used "DVD" to describe the drive in my iMac, not realizing I wouldn't even bother with a DVD in Classic anyhow. Sheepshaver does not seem to recognize any CD in the drive anymore. I'm afraid to attempt a fresh install since building a new disk image would require the use of the CD to install a fresh copy of Mac OS 9.
temperedreason
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Re: Changes under Mountain Lion

Post by temperedreason »

As I suspected, this isn't some sort of glitch. I attempted to build a new disk image. Sheepshaver no longer recognizes the Mac OS 9 disk in the drive, and ejects it immediately. I am then greeted by a flashing "?" disk in the center of the screen. The problem was replicated upon restart.

Unless this can be resolved, there will be a lot of folks who will have to make a choice next month between Classic OS 9 and Mountain Lion. 8O
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Cat_7
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Re: Changes under Mountain Lion

Post by Cat_7 »

In the meantime, you could try to create a disk image from your CD with diskutility and add that to the volumes list in SheepShaver. Please don't forget to set the image to read-only if it is an image of an install cd.

Best,
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adespoton
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Re: Changes under Mountain Lion

Post by adespoton »

Or you can do what I do, and run the Windows version... although I haven't checked if SDL and DarWINE/WineSkin are properly emulating the CD under Mountain Lion yet.
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