Well....you do need to make sure you're not burning in HFS+/Mac OS Extended format as that won't read under 7.6, and that's the default under most things nowadays...although, I believe Toast will let you turn it off.
I've had the best luck, on older macs with older drives, burning ISO9660 "with HFS extension" which is a setting in Toast. Burning from the Finder or Disc Utility has been hit or miss, but even then, with a lot of the faster drive/media now, you have issues in the older/slower drives regardless.
--- On Fri, 2/27/09, myopic_man <Bennet-Alder@BrahmaCom.com> wrote:
> From: myopic_man <Bennet-Alder@BrahmaCom.com>
> Subject: [MacDrivers] Re: Macintosh SE and compatible CD Rom Drives / Drivers
> To: macdrivers@yahoogroups.com
> Date: Friday, February 27, 2009, 4:16 PM
> > >> Does anybody know how to burn a CD that's
> compatible with OS 7.5 with
> > >> a modern mac? (I'm NOT a modern-mac user
> ;)
>
> Do not burn a new CD in a different format. All modern
> formats are already supported in
> the Mac CD driver.
>
> You must turn on several extensions on your SE to make them
> work. These names are from
> memory, so please try to be kind:
>
> Foreign File Access -- this is the master extension that
> enables those listed below
> ISO9660 Access
> High Sierra Access
> PhotoCD Access
> UDF Volume Access
> Apple Audio extension
>
> Extensions Manager is used in later versions to move these
> files back and forth from
> Extensions to Extensions (disabled). Then a restart makes
> them part of the working
> system.
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>