- Joined
- Jun 20, 2012
- Messages
- 8
- Motherboard
- Gigabyte GA-Z77-D3H
- CPU
- Intel Core i5-3570K OC'd to 4.08 GHz
- Graphics
- MSI R7870-2GD5T/OC (2GB)
- Mac
- Classic Mac
- Mobile Phone
[RESOLVED] Prohibitory sign when booting from install USB
Hi everyone,
I have a fully functioning Mavericks installation running right now. My build is such that I don't even need to run Multibeast when I do a fresh install - I just need to use the iBoot USB to boot, and I use an external USB sound card. In other words, up till now, I've had no hardware that causes any big issues with OS X.
I followed Tony's guide to upgrade to Yosemite directly from Mavericks here: http://www.tonymacx86.com/yosemite-...-os-x-yosemite-using-unibeast-multibeast.html, creating an install USB. However, when I try to boot into the installer from my new USB, after a few minutes of loading (maybe at about 30%) the screen goes fully gray and I get a prohibitory sign. The installation halts completely.
Since all of my hardware has seemed very OS X-friendly so far, I can't begin to imagine what the problem is. You can see the details of my build on my profile, but I'm pasting here as well:
Motherboard
Gigabyte GA-Z77-D3H
CPU
Intel Core i5-3570K OC'd to 4.08 GHz
Graphics
MSI R7870-2GD5T/OC (2GB)
Other Hardware
2x4GB G.SKILL Ripjaws X @ 1600 MHz
2x2GB Micron @ 1333 MHz
Sound Blaster X-Fi Fatal1ty
250GB Samsung 840 (Win8)
250GB WD @ 7200 (Win7)
160GB WD @ 7200 (Mavericks)
500GB Seagate @ 7200 (Storage)
I'd appreciate any help you guys can give me. Please tell me if any other information would be helpful.
Thanks.
UPDATE: So I'm currently posting this from inside Yosemite! MASSIVE ups to Fjordn for asking me to make sure I was using a USB 2.0 port instead of a USB 3.0 port. I moved the OS X Installer USB to a USB 2.0 port on the back of my motherboard, instead of my USB 3.0 ports on the front of my case, and on the first try everything worked as smooth as butter. Not a single boot flag or hardware change. So folks, when you're installing, DON'T TRY TO USE A USB 3.0 PORT.
Hi everyone,
I have a fully functioning Mavericks installation running right now. My build is such that I don't even need to run Multibeast when I do a fresh install - I just need to use the iBoot USB to boot, and I use an external USB sound card. In other words, up till now, I've had no hardware that causes any big issues with OS X.
I followed Tony's guide to upgrade to Yosemite directly from Mavericks here: http://www.tonymacx86.com/yosemite-...-os-x-yosemite-using-unibeast-multibeast.html, creating an install USB. However, when I try to boot into the installer from my new USB, after a few minutes of loading (maybe at about 30%) the screen goes fully gray and I get a prohibitory sign. The installation halts completely.
Since all of my hardware has seemed very OS X-friendly so far, I can't begin to imagine what the problem is. You can see the details of my build on my profile, but I'm pasting here as well:
Motherboard
Gigabyte GA-Z77-D3H
CPU
Intel Core i5-3570K OC'd to 4.08 GHz
Graphics
MSI R7870-2GD5T/OC (2GB)
Other Hardware
2x4GB G.SKILL Ripjaws X @ 1600 MHz
2x2GB Micron @ 1333 MHz
Sound Blaster X-Fi Fatal1ty
250GB Samsung 840 (Win8)
250GB WD @ 7200 (Win7)
160GB WD @ 7200 (Mavericks)
500GB Seagate @ 7200 (Storage)
I'd appreciate any help you guys can give me. Please tell me if any other information would be helpful.
Thanks.
UPDATE: So I'm currently posting this from inside Yosemite! MASSIVE ups to Fjordn for asking me to make sure I was using a USB 2.0 port instead of a USB 3.0 port. I moved the OS X Installer USB to a USB 2.0 port on the back of my motherboard, instead of my USB 3.0 ports on the front of my case, and on the first try everything worked as smooth as butter. Not a single boot flag or hardware change. So folks, when you're installing, DON'T TRY TO USE A USB 3.0 PORT.
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