In the bottom pane, check that the “Partition Map Scheme” is set to “GUID Partition Table” (which means it is Mac OS X bootable). Once the format completes, make sure that the USB flash drive is selected in the left-hand pane.This format operation will take less than a minute to complete. Click the “Erase…” button and then the “Erase” button.
Click on the “Erase” tab, select “Mac OS Extended (Journaled)” for “Format” and input a name like “Snow Leopard Install USB” (or anything because this will be overwritten later).On the left-hand pane, select the USB drive (not the FAT32 or other partition under it).Format it as a Mac OS X bootable drive by following these steps: The DMG file creation can take 20 minutes or longer.įormat USB Flash Drive as Mac OS X Bootable Leave the defaults of “compressed” for “Image Format” and “none” for “Encryption”. Select the location to save the DMG file (“Mac OS X Install DVD.dmg”) to.Click on the “New Image” icon, located in toolbar at the top.On the left-hand pane, select the “Mac OS X Install DVD” by clicking on it.If you don’t see the “Mac OS X Install DVD” even after waiting for a while, try closing and starting the “Disk Utility” application again.A “Mac OS X Install DVD” disk icon will also appear on the desktop. On the left-hand pane, you will see “Mac OS X Install DVD” appear under the DVD drive when the DVD is mounted.Run the “Disk Utility” application (under the “Applications/Utilities” folder).Insert the Snow Leopard 10.6 “Mac OS X Install DVD” disk into the DVD drive.I just wanted a DMG file for speed and convenience in case I need to clone to a dual-layer DVD or to another USB flash drive. You can skip creating a DMG (Disk iMaGe) file if you clone directly from the Snow Leopard “Mac OS X Install DVD” disk to the USB flash drive. If you want to boot the USB flash drive on a PowerPC-based Mac, please see the comments. The resulting USB flash drive will boot on Intel-based Macs only. Note: I’m doing the following on a Macbook running Snow Leopard. And the USB flash drive is more portable and robust than a DVD. I can use it with a Macbook Air or Pro Retina which do not come with a DVD drive. It would be faster than reading from a DVD. I thought it would be useful to put the Mac OS X 10.6 Snow Leopard installer on a USB flash drive.
The instructions below will not work for Mac OS X 10.7 Lion or later versions. Update: Go to Bootable USB Flash Drive to Install Mac OS X 10.10 Yosemite if you want to install Mac OS X 10.9 Mavericks or Mac OS X 10.10 Yosemite instead.
Lucky G5 have Open Firmware that allow booting up straight from USB flash drive and take install painlessly! First You need to create RAW image of Your Mac OSX DVD into file. Im not interested in finding replacement because it’s anyway obsolete but i need to install Mac OSX. My DVD drive was broken on old Power MAC G5.
4) If the install fails, your install disk may be damaged. 3) Try to install Mac OS X from the DVD to the HDD by following the installer instructions. 2) Select the install DVD and push the return key.
In this case, the install DVD should show up. If the Security Options button is not available, Disk Utility cannot perform a secure erase on the storage device.If there is a system disk connected to the Mac it will show up on the screen. Secure erase options are available only for some types of storage devices. (Optional) If available, click Security Options, use the slider to choose how many times to write over the erased data, then click OK. If the Scheme pop-up menu isn’t available, make sure you selected the storage device you want to erase-it’s at the top of the hierarchy.Ĭlick the Format pop-up menu, then choose a file system format. Ĭlick the Scheme pop-up menu, then choose GUID Partition Map. In the sidebar, select the storage device you want to erase, then click the Erase button. If you want to erase any other type of storage device: Double-click Disk Utility in the /Applications/Utilities folder. Note: If you want to get your Mac ready to trade in, sell, or give away, and your computer is a Mac with Apple silicon or an Intel-based Mac with an Apple T2 Security Chip, use Erase Assistant.