# Mac OS 9.2.1 doesn't start up with content attached

**URL:** <https://forum.eaasi.cloud/t/mac-os-9-2-1-doesnt-start-up-with-content-attached/272>\
**Category:** Support\
**Created:** [August 16, 2021, 10:57pm UTC](https://forum.eaasi.cloud/t/mac-os-9-2-1-doesnt-start-up-with-content-attached/272 "2021-08-16T22:57:31Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Cynde\_Moya](https://avatars.discourse-cdn.com/v4/letter/c/838e76/32.png) [@Cynde\_Moya](https://forum.eaasi.cloud/u/Cynde_Moya)\
**Post date:** [August 16, 2021, 10:57pm UTC](https://forum.eaasi.cloud/t/mac-os-9-2-1-doesnt-start-up-with-content-attached/272/1 "2021-08-16T22:57:31Z")

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the environment Mac OS 9.21 starts up OK on its own. But when I make an emulation project, attaching a CD ROM iso uploaded as a content object, the emulator does not start up. Instead i see this.

![image](https://us1.discourse-cdn.com/flex019/uploads/eaasi/original/1X/a7d4d99c0d77a262fac13d165b032577cd35fe63.png)

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**Author:** ![dianne.dietrich](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.eaasi.cloud/dianne.dietrich/32/110_2.png) [@dianne.dietrich](https://forum.eaasi.cloud/u/dianne.dietrich)\
**Post date:** [September 3, 2021, 5:59pm UTC](https://forum.eaasi.cloud/t/mac-os-9-2-1-doesnt-start-up-with-content-attached/272/2 "2021-09-03T17:59:12Z")

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@Cynde_Moya if you type

```auto
boot hd:,\\:tbxi

```

at the prompt, you should get that environment to start. I’m not totally sure what in the config is throwing it off when there’s a CD-ROM loaded (the boot order appears to be to check the hard disk first, I _think_) but I got the system to start up once I issued that OpenBIOS command.

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**Author:** ![Cynde\_Moya](https://avatars.discourse-cdn.com/v4/letter/c/838e76/32.png) [@Cynde\_Moya](https://forum.eaasi.cloud/u/Cynde_Moya)\
**Post date:** [October 27, 2021, 6:14am UTC](https://forum.eaasi.cloud/t/mac-os-9-2-1-doesnt-start-up-with-content-attached/272/3 "2021-10-27T06:14:54Z")

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Hi  
I have tried typing that into the command line. And it doesn’t respond for me.  
Do you have any other tips? This is a real showstopper. It didn’t happen before…  
Cynde

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<div class="post-metadata">

**Author:** ![dianne.dietrich](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.eaasi.cloud/dianne.dietrich/32/110_2.png) [@dianne.dietrich](https://forum.eaasi.cloud/u/dianne.dietrich)\
**Post date:** [October 27, 2021, 12:59pm UTC](https://forum.eaasi.cloud/t/mac-os-9-2-1-doesnt-start-up-with-content-attached/272/4 "2021-10-27T12:59:27Z")

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Huh! I just tried it again (I’m using the resource whose ID starts with 63eb…) and I got it to work. After I type in the command and press enter, it pauses for a few moments, then I get the message:

```auto
MacOS: unable to find a usable NVRAM partition - using offset 0x1400

```

But then it boots up. I’ll keep pondering…

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<div class="post-metadata">

**Author:** ![Cynde\_Moya](https://avatars.discourse-cdn.com/v4/letter/c/838e76/32.png) [@Cynde\_Moya](https://forum.eaasi.cloud/u/Cynde_Moya)\
**Post date:** [October 28, 2021, 12:49am UTC](https://forum.eaasi.cloud/t/mac-os-9-2-1-doesnt-start-up-with-content-attached/272/5 "2021-10-28T00:49:53Z")

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Some of them are starting to come through, as I try different content. This is positive 8)

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**Author:** ![ethan.gates](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.eaasi.cloud/ethan.gates/32/15_2.png) [@ethan.gates](https://forum.eaasi.cloud/u/ethan.gates)\
**Post date:** [March 28, 2025, 1:41pm UTC](https://forum.eaasi.cloud/t/mac-os-9-2-1-doesnt-start-up-with-content-attached/272/6 "2025-03-28T13:41:30Z")

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