#Imac 21.5 2011 os high sierra 10.13.6 mac os x#
#Imac 21.5 2011 os high sierra 10.13.6 mac os#
#Imac 21.5 2011 os high sierra 10.13.6 64 Bit#
#Imac 21.5 2011 os high sierra 10.13.6 update#
#Imac 21.5 2011 os high sierra 10.13.6 32 bit#

Return to the Mac OS Installer and choose to install to the Macintosh HD disk. Make sure the partition map scheme is GUID Partition Table. Basically, select the setting shown below, then click on the Erase. After booting from the flash drive, you need to use the Disk Utility application to erase the internal drive before installing Snow Leopard.

#Imac 21.5 2011 os high sierra 10.13.6 64 Bit#

Other than selecting the flash drive, I used the default settings for a 64 bit Snow Leopard installation. The flash drive was tested using Virtual Box. Finally, click on the Restore button in the popup window.

#Imac 21.5 2011 os high sierra 10.13.6 mac os x#

In the popup window, select restore from Mac OS X Install DVD, as shown below. Highlight the name Untitled, then click on the Restore button on the top of the Disk Utility application window. Use the Disk Utility application to erase the flash drive, as shown below.

Use the Finder application to mount the Snow Leopard ISO file.

The flash drive needs to be at least 8 GB in size. The flash drive was testing using VirtualBox Version Version 5.2.26 r128414 (Qt5.6.3). This was done use an iMac (21.5-inch, Mid 2011) 2.5 GHz Intel Core i5 with MacOS High Sierra 10.13.6 installed.

Creating a USB Flash Drive Installer from a Snow Leopard ISO File. From here, you could upgrade to Lion by using a purchased DMG file.

#Imac 21.5 2011 os high sierra 10.13.6 update#

This would update Snow Leopard to OS X 10.6.8.

Once you have Snow Leopard installed, you should install all the available Snow Leopard updates. If you chose to burn a DVD, then you will need a DL DVD, since the contents of the ISO is over 4.7 GB. Instructions are given below for creating a Snow Leopard USB flash drive installer. Apple still sells Snow Leopard DVDs, but you can also download an ISO from the internet. You can decline to give an Apple ID if you wish. You would not need a Apple ID to install Snow Leopard, but the installer will still ask. You can read the requirements from the Apple Lion website given in the above link. You probably can not use the DMG file to create a bootable installer. In other words, the DMG file only offers an upgrade to Lion. If you were to purchase Lion from Apple, then a requirement to install would be to have Snow Leopard already installed. However, you may be able to run 64 bit BIOS booting operating systems such as Windows and some versions of Linux.

#Imac 21.5 2011 os high sierra 10.13.6 32 bit#

Note: Since this model has a 32 bit EFI, you can only run 32 bit EFI booting operation systems.

The OS X 10.7.5 (Lion) was the last version designed for your Mac model. Mac OS X v10.6.2 Update is dated Nov 9, 2009, I doubt the disc you have is the correct one for this model Mac. (I made the assumption 2.66QX means 2.66 GHz Quad Core Xeon) This model originally was designed to run OS X 10.4.7. WhatвЂ™s more, with the Thunderbolt port you can daisy-chain as many as six devices plus a display.According to, your Mac is a 2006 model which was discontinued January 8, 2008. The two 10-Gbps data channels per port mean you can transfer data up to 12 times faster than with FireWire 800. This Apple iMac features the flexible Thunderbolt technology, with one tiny port offering a lightning-fast transfer speed with huge expansion capabilities. By implementing an intelligent control system that includes three fans inside, it monitors temperatures and delivers just the right amount of airflow to critical components, all done in an ultra quiet manner. Since data doesnвЂ™t have as far to travel, you get faster performance and greater efficiency. The Intel Core architecture puts the processor, cache, memory controller, and graphics engine on a single chip. It includes two processing units, the CPU and the GPU for a powerful response and performance. The LED backlighting in iMac offers remarkable brightness and energy-efficiency. Movies, TV shows, FaceTime HD video calls, websites, photos and everything looks spectacular on the widescreen 16:9 iMac display. The Apple Desktop вЂ“ MC309DA features an edge-to-edge display with glass cover. вЂќДЄpple iMac 21.5 inch All-in-One Desktop вЂ“ (2011, Quad i5, 20GB, High Sierra OS) THE GRAPHICS CARD IS RADEON 512MB HD 6750M. NOT SURE WHAT IS THE TOP MAXED RAM IT MAY BE 32GB BUT PLEASE LOOK ONLINE. THIS IMAC HAS THE STANDARD 500GB HARD DRIVE BUT THE RAM IS 20GB (2X8GB, 1X4GB AND ONE SLOT FREE). EVERYTHING IS ORIGINAL INCLUDING THE APPLE POWER SUPPLY AND WIRELESS KEYBOARD AND MOUSE (MOUSE IS MISSING A RUBBER FOOT STRIP BUT IS STILL USUABLE). вЂњ UPGRADED IMAC 21.5вЂі 2011 CORE I5 MODEL. See all condition definitions вЂ“ opens in a new window or tab See the sellerвЂ™s listing for full details and description of any imperfections. This item may be a floor model or an item that has been returned to the seller after a period of use. The item may have some signs of cosmetic wear, but is fully operational and functions as intended.