Yosemite Public Beta Bootable USB installers

[dmckinneysr]

Are you using the same thumb drive for the OS and the installer all on one?

Using a USB 2 drive, regardless, will be painfully slow, and may be the root cause of it locking up. If you can find a USB 3 drive or SSD to use as the boot device, that will make a dramatic improvement - providing your machine has USB 3 ports.

OK Guys, as you look through this thread you can see I had a couple of issues trying to get this to work. Now I'm up and running just fine. If you follow the directions above to the letter it will work. The 2 things I would add:
1) is make sure you're using usb 3.o not 2.0.
2) I USED A 32 GB (16 PROBABLY COULD WORK)=
5.5 PARTITION FOR BOOTABLE
26.5 2ND PARTITION (CLICK ON PARTITION, OPTION AND SELECT GUID TYPE)

When I got new thumb drive it worked just fine. Install still takes a while but it works!! Thanks to @SandboxGeneral....

 

[S.B.G]

OK Guys, as you look through this thread you can see I had a couple of issues trying to get this to work. Now I'm up and running just fine. If you follow the directions above to the letter it will work. The 2 things I would add:
1) is make sure you're using usb 3.o not 2.0.
2) I USED A 32 GB (16 PROBABLY COULD WORK)=
5.5 PARTITION FOR BOOTABLE
26.5 2ND PARTITION (CLICK ON PARTITION, OPTION AND SELECT GUID TYPE)

When I got new thumb drive it worked just fine. Install still takes a while but it works!! Thanks to @SandboxGeneral....

Good deal! I'm glad you were able to make it work! Now to find all the bugs and report them to Apple!

 

[domo-origoto]

can you boot from an sd card

----------

Here is how to make a bootable usb of the yosemite public beta 1 installer. It is much easier than for yosemite DP1 and similar to how you do it for mavericks (but obviously the installer name has changed).

Format an 8 GB USB drive which should be called Untitled and formatted as Mac OS Extended (Journaled). The installer should be called Install OS X Yosemite Beta.app and should be in your Applications folder.

Run this in terminal and wait about 20 minutes:

sudo /Applications/Install\ OS\ X\ Yosemite\ Beta.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ OS\ X\ Yosemite\ Beta.app --nointeraction

You can boot up from it by selecting it from the startup manager you get when starting your computer and holding down the option key.

can i do a clean install with it?

 

[tywebb13]

.

 

[domo-origoto]

Provided it is large enough, formatted correctly and named Untitled it should work for that too.

the title for the sd card is like mac installer something, so i should change it to untitled? all i did was clickk ur thiny and did the terminal thing

 

[tywebb13]

.

 

[IndoX]

Nvm

 

[tywebb13]

.

 

[tywebb13]

This works for PB3 too.

 

[ABC5S]

Unfortunately, I get an error with my USB 3.0


"Error erasing disk error number (-69888, 0)
A error occurred erasing the disk".

EDIT: Get this same error with two other new USB drives

EDiT #2: Reinstalled Yosemite PB 3, and still get the same error message when trying to make a boot thumb drive.

 

[atvusr]

"Error erasing disk error number (-69888, 0)
A error occurred erasing the disk".

I got this error too - it occurs when the USB drive is "busy" and OS X cannot unmount the USB drive for erasing.

Make sure that nothing is open what has access to the USB drive, i.e. another Terminal window with a working directory on the USB drive.

 

[ABC5S]

I got this error too - it occurs when the USB drive is "busy" and OS X cannot unmount the USB drive for erasing.

Make sure that nothing is open what has access to the USB drive, i.e. another Terminal window with a working directory on the USB drive.

Will try again with your suggestion. Thank you

 

[ABC5S]

Unfortunately, I get an error with my USB 3.0


"Error erasing disk error number (-69888, 0)
A error occurred erasing the disk".

EDIT: Get this same error with two other new USB drives

EDiT #2: Reinstalled Yosemite PB 3, and still get the same error message when trying to make a boot thumb drive.

Found a fix that was so darn easy..

Where is shows "Untitled" in bold RED, the name should not be the same as the Hdd or SSD drive because it wants to erase this volume. You can replace Untitled with something else as I did with PB3. Than click Return and put in your passcode and that's it. It will then begin the install process to your USB thumb drive.

sudo /Applications/Install\ OS\ X\ Yosemite\ Beta.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ OS\ X\ Yosemite\ Beta.app --nointeraction

 

[tywebb13]

.

 

[antmarobel]

Not working for me at all. I have already tried 2 different pendrives. After the Terminal "done" I restarted the machine and the install always fails (3 times so far). Does anyone have a link for the Disk Utility method???




Oooops...wrong thread. I'm asking help for macOS Sierra...