Use TransMac, which has a 15-day trial period and works flawlessly.
In the left pane, right click the USB Drive and select Format Disk for Mac
In the left pane, right click the USB Drive and select Restore with Disk Image
Point to your .dmg (or choose All Files to select an .iso) file and click Open.
It will take a few minutes depending on size of .dmg and speed of USB drive, but once done you can pop it into your mac, hold down the option key when turning on the mac and choose the USB drive.
Answer from Eric B. on Stack ExchangeSearching for a older MAC OSX bootable DMG that I can use with UltraDMG
Where can I find the .dmg file to create a USB boot installer for Sierra using a Windows pc?
Need Suggestion Please
Massive dmg vs Ultra dmg, which is stronger
Low<medium<high<massive<ultra<immense
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Hey everyone. I am a windows user with a bit of Mac experience. I recently saved 2 old Mac Book Pros from the dump as they are in nice condition. Both have no OS and show the flashing folder ? icon on boot but seem to be otherwise okay. I would like to install OSX on them and make sure they are working before selling them on to people who will appreciate them.
These are like 2010-2012 Mac Book Pros. I believe they are Core 2 Duo units. I already downloaded Ultra DMG on my windows machine to make a bootable USB but I'm having trouble finding a suitable bootable DMG with a partition table that I can use with it to get these up and running.
Anyone could maybe point me in the right direction? Thanks!
Use TransMac, which has a 15-day trial period and works flawlessly.
In the left pane, right click the USB Drive and select Format Disk for Mac
In the left pane, right click the USB Drive and select Restore with Disk Image
Point to your .dmg (or choose All Files to select an .iso) file and click Open.
It will take a few minutes depending on size of .dmg and speed of USB drive, but once done you can pop it into your mac, hold down the option key when turning on the mac and choose the USB drive.
TransMac worked for me, but first you need to partition your USB drive with GPT. It will not work if partitioned as MBR. diskpart on Windows can do this:
diskpart
DISKPART> list disk
(Find the disk number)
DISKPART> select disk 2
Disk 2 is now the selected disk.
DISKPART> clean
DiskPart succeeded in cleaning the disk.
DISKPART> convert gpt
DiskPart successfully converted the selected disk to GPT format.
DISKPART> create partition primary
My mid-2011 iMac is currently wiped, and I'm struggling to reinstall the OS (either Sierra or High Sierra).
I've read that these .dmg files can be installed from the Apple Store directly, but are not provided if you are on a windows pc. I'm sure someone out there has found a solution, but I can't seem to find any.
I tried updating to Sonoma from High Sierra on my MBP 2012 and it got hung on the boot screen. I tried many ways to get out of it. However nothing worked. I can safe boot and that's just about it. Can I atleast go back to high Sierra by creating a bootable USB with the downloaded dmg file? Thanks in advance