RAM upgrade for Macintosh SE30

[surfer150]

I’m looking for upgrading my SE30 from 4 to 32 MB of RAM. But I’m uncertain which type of RAM i need. There seem to be to types of 30pin SIMM modules: FPM and EDO.

I found this modules, will they work?

https://ebay.us/m/u2GWpM

Does the SE30 support parity?

 

[jasonfortheworld]

Those should work just fine. The SE and SE/30 aren't very picky about what type of RAM you get and parity doesn't matter.

 

[surfer150]

Thank you very much. I ordered this modules now.

 

[surfer150]

The RAM arrived and I upgraded it today. Additionally I put in a new HDD with 4 GB and a ROM-Inator II in order to be able to address the entire RAM without MODE32.

But I’m not able to install Mac OS 7.5.3. Even though it should support up to 4 GB partition size, the installation does not work. It says that 29619 KB are needed, but -35371 KB are available. What can i do? I already initialized it with patched HD SC Setup 7.3.5.

My Classic II has a 4 GB drive too using the entire drive as a single partition was not an issue at all.

 

[Byrd]

On your 4GB drive, partition to < 2.0 GB x 2, this is a limitation of the file system

 

[surfer150]

But why it works on my Classic II with 7.6 then?

 

[mikes-macs]

On System versions before 7.5, try to avoid handling volumes that are larger than 2GiB (2,097,152KiB, 2048MiB) because HFS in these versions cannot address more than 2GiB volumes. 7.5 has support for 4GiB volumes, and 7.5.2 (which was mostly for PowerPC machines, most people won't see it) supports up to 2TiB.

 

[croissantking]

But why it works on my Classic II with 7.6 then?

Because you’re trying to install while booted to System 7.1 and it always thinks the partition is full if larger than 2GB. You should start up from System 7.5 or later to do this install.

 

[obsolete]

You're going to want this too: https://www.bigmessowires.com/mac-se30-with-upgraded-rom/

 

[surfer150]

Because you’re trying to install while booted to System 7.1 and it always thinks the partition is full if larger than 2GB. You should start up from System 7.5 or later to do this install.

Okay, that makes sense.

You're going to want this too: https://www.bigmessowires.com/mac-se30-with-upgraded-rom/

So the only way to use 4 GB partition size is to insert the stock ROM, install Mac OS 7.5, then install the ROM-inator II and perform the necessary changes in ResEdit?

If I boot from the 7.5 floppy with ROM-inator II installed it freezes at the “Welcome” screen.

It’s a shame that such workarounds are needed on a ROM that is sold for $50. They should’ve designed it that all officially supported OS versions boot without a workaround.

 

[Byrd]

So .... the simple fix is use multiple 2GB partitions for 68K Macs, it's not like you're going to fill it and there are less headaches trying different OSes new and old. Also consider the bigger the HFS partition the larger the default file size; once you get to 4GB the minimum file size is 64K (for anything - even a 1K text file); at 2GB it's 16K per file.

 

[surfer150]

Thank you, i will go for two partitions á 2 GB then.

What to select for the second partition in HD SC then? Scratch or Additional Mac partition?

 

[croissantking]

Okay, that makes sense.

So the only way to use 4 GB partition size is to insert the stock ROM, install Mac OS 7.5, then install the ROM-inator II and perform the necessary changes in ResEdit?

If I boot from the 7.5 floppy with ROM-inator II installed it freezes at the “Welcome” screen.

It’s a shame that such workarounds are needed on a ROM that is sold for $50. They should’ve designed it that all officially supported OS versions boot without a workaround.

What you would do is create a 7.5 floppy with the ResEdit patch applied.

 

[croissantking]

Additional Mac partition

This