- #Bootable usb os x mountain lion mac os x
- #Bootable usb os x mountain lion mac os
- #Bootable usb os x mountain lion install
then click image and choose the InstallESD file on usb #1. drag the empty usb #2 to the destination. Then plug BOTH usb sticks back into the mac. I then entered the os x file i downloaded on the pc, went to contents, shared support and then copied the InstallESD onto usb #1. do this for both usb, they may not show up on your pc, you need to use the transmac programe. change format to 'mac os extended journal', change current to 1, and in options tick guid partition table. I then erased and formated two usb sticks using the mac, on disk utility go to the partition tab, select a usb. I then downloaded the free trial of transmac, which allows you to read mac files and mac formatted disks on your pc. Im going to give instructions incase anyone else is in the same situation.įirst on my pc I downloaded dmg. Those of you who want a more turn-key solution should consider Lion DiskMaker, a donationware AppleScript app that will let you make a bootable DVD or thumb drive from a Lion or Mountain Lion installation program.Ok, so after ALOT of tinkering about I have managed to down load mountain lion onto my mac, using a pc to make the bootable usb stick.
#Bootable usb os x mountain lion install
Once it's done, eject it, label it clearly, and either use it to install Mountain Lion on a newly formatted hard drive or if you've already upgraded through the normal installer, put it away for a rainy day. It will take some time for the drive to be written. You may have to authenticate as an administrator.ġ0. Click Restore and agree to Erase the drive and replace it with the contents of InstallESD.dmg. Mount InstallESD.dmg (by double-clicking) and drag the mounted image from your desktop into the source location (Thanks, shamguy4) Drag Untitled 1 from the left column to the destination field. Drag InstallESD.dmg into the file-open window and click Open. Next, select the new partition (Untitled 1 by default). Wait as it unmounts, partitions, and remounts your disk.Ĩ. Click the Options button at the bottom-right of the partition layout.
#Bootable usb os x mountain lion mac os
Choose Format > Mac OS Extended (Journaled).Ħ. With this drive selected, click the Partition tab and choose Partition Layout > 1 Partition. Drives are listed first with their partitions listed after them, each partition indented slightly.ĥ. Prepare it for use by creating a single HFS+ partition. Attach a thumb drive to your Mac that is at least 8GB in size. Navigate to /Applications/Utilities and launch DiskUtility.Ĥ. Open a new Finder window with Command-N (File > New Finder Window). There you'll find a disk image called InstallESD.dmg.ģ. A new Finder browser window opens, showing the normally hidden material inside the installer bundle.Ģ. Right-click (or Control-click) the installer and choose Show Package Contents from the contextual pop-up.
#Bootable usb os x mountain lion mac os x
It is called Install Mac OS X Mountain Lion.ġ. Once the large multi-GB installer finishes downloading, go to your Applications folder to find the installer itself.
![bootable usb os x mountain lion bootable usb os x mountain lion](https://www.lifewire.com/thmb/Gh-KkHwXg_GeI0SgcfbNf6i45x4=/1500x1000/filters:no_upscale():max_bytes(150000):strip_icc()/make-a-bootable-usb-drive-of-yosemite-installer-2259931-18b1628c408848fc99cc922aa8b3c12d.png)
You can use this option-click-Purchases trick to re-download any purchase, not just Mountain Lion. An "Install" button should appear next to Mountain Lion. Launch the App Store and option-click the Purchases tab.
![bootable usb os x mountain lion bootable usb os x mountain lion](https://3.bp.blogspot.com/-gds-SwnHQy4/V8fMfHWwRRI/AAAAAAAAD64/W1b4AtHYP0oQjYaGeX9Z0rERSIa9S9y5ACLcB/s1600/create-bootable-install-usb-drive-in-mac-os-x-el-capitan.jpg)
If not, you'll need to re-download it from the Mac App Store.
![bootable usb os x mountain lion bootable usb os x mountain lion](https://3.bp.blogspot.com/-4s4cVu9b6-g/V8bMRlgqTwI/AAAAAAAAD5k/5DGdwz2vnnI_6nWZUpnoNLadGNCclLLmwCLcB/s400/osx-show-package-content.jpg)
If you saved a copy when you first installed Mountain Lion, great. You'll need a copy of the OS X Mountain Lion installer. This year, I update those instructions for Mountain Lion. Last year, I posted about creating a standalone Lion USB installer thumb drive.