<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Timothy-<div class=""><br class=""></div><div class="">It is my understanding that there is nothing different about macOS Sierra with regard to downgrading to an older version of macOS. Previous versions of macOS have always been able to be installed on any Mac, with the caveat that you must do a clean install from bootable media and restore data from a backup. Can you cite a source stating differently? Any clarification is much appreciated. Thanks in advance.</div><div class=""><br class=""></div><div class="">-Teddy</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Sep 20, 2016, at 11:00 AM, Timothy Yager <<a href="mailto:tyager@mit.edu" class="">tyager@mit.edu</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="WordSection1" style="page: WordSection1; font-family: HelveticaNeue; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);"><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Calibri;" class="">Good morning,<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Calibri;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Calibri;" class="">Today Apple releases its latest operating system, macOS Sierra (10.12). Please note that soon all Macs purchased from Apple will come with macOS Sierra preinstalled; previous versions of OS X cannot be installed. This email provides information for those considering an upgrade to the latest OS release. <o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Calibri;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Calibri;" class=""><b class="">What’s new</b><o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Calibri;" class=""><a href="http://www.apple.com/macos/sierra/" style="color: rgb(149, 79, 114); text-decoration: underline;" class=""><span style="color: rgb(11, 76, 180);" class="">http://www.apple.com/macos/sierra/</span></a><o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Calibri;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Calibri;" class=""><b class="">Before you upgrade to macOS Sierra</b><o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt 0.5in; font-size: 12pt; font-family: Calibri; text-indent: -0.5in;" class=""><span class="">•<span style="font-style: normal; font-variant-caps: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';" class=""> <span class="Apple-converted-space"> </span></span></span>Before performing any upgrade, always back up your computer using <a href="https://ist.mit.edu/crashplan/" style="color: rgb(149, 79, 114); text-decoration: underline;" class=""><span style="color: rgb(11, 76, 180);" class="">CrashPlan</span></a> or the backup system provided by your local IT support provider (e.g., local Time Machine backup).<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt 0.5in; font-size: 12pt; font-family: Calibri; text-indent: -0.5in;" class=""><span class="">•<span style="font-style: normal; font-variant-caps: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';" class=""> <span class="Apple-converted-space"> </span></span></span>Go to the <a href="http://ist.mit.edu/macos/1012" style="color: rgb(149, 79, 114); text-decoration: underline;" class=""><span style="color: rgb(11, 76, 180);" class="">macOS Sierra Known Issues page</span></a> on the IS&T Software Grid to check for software compatibility. Staff should consult with their department’s IT support provider to determine when to upgrade. <o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt 0.5in; font-size: 12pt; font-family: Calibri; text-indent: -0.5in;" class=""><span class="">•<span style="font-style: normal; font-variant-caps: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';" class=""> <span class="Apple-converted-space"> </span></span></span>MIT-owned machines should be upgraded by downloading macOS Sierra from the Apple App Store or via Casper for managed Macs. <o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt 0.5in; font-size: 12pt; font-family: Calibri; text-indent: -0.5in;" class=""><span class="">•<span style="font-style: normal; font-variant-caps: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';" class=""> <span class="Apple-converted-space"> </span></span></span>Personally owned machines can be upgraded via the Apple App Store.<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Calibri;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Calibri;" class=""><b class="">Upgrade Resources</b><o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt 0.5in; font-size: 12pt; font-family: Calibri; text-indent: -0.5in;" class=""><span class="">•<span style="font-style: normal; font-variant-caps: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';" class=""> <span class="Apple-converted-space"> </span></span></span>Documentation on how to <a href="http://www.apple.com/osx/how-to-upgrade/?cid=wwa-us-kwg-mac" style="color: rgb(149, 79, 114); text-decoration: underline;" class=""><span style="color: rgb(11, 76, 180);" class="">upgrade to macOS Sierra via the Apple App Store</span></a><o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt 0.5in; font-size: 12pt; font-family: Calibri; text-indent: -0.5in;" class=""><span class="">•<span style="font-style: normal; font-variant-caps: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';" class=""> <span class="Apple-converted-space"> </span></span></span>Documentation on how to <a href="http://kb.mit.edu/confluence/display/istcontrib/Casper+-+Upgrading+Macs+to+OS+X+El+Capitan" style="color: rgb(149, 79, 114); text-decoration: underline;" class=""><span style="color: rgb(11, 76, 180);" class="">upgrade to macOS Sierra via Casper for managed Macs</span></a><o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Calibri;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Calibri;" class=""><b class="">Hardware Requirements</b><o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt 0.5in; font-size: 12pt; font-family: Calibri; text-indent: -0.5in;" class=""><span class="">•<span style="font-style: normal; font-variant-caps: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';" class=""> <span class="Apple-converted-space"> </span></span></span>Any Mac capable of running OS X 10.7.5 or later<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt 0.5in; font-size: 12pt; font-family: Calibri; text-indent: -0.5in;" class=""><span class="">•<span style="font-style: normal; font-variant-caps: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';" class=""> <span class="Apple-converted-space"> </span></span></span>2GB of memory<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt 0.5in; font-size: 12pt; font-family: Calibri; text-indent: -0.5in;" class=""><span class="">•<span style="font-style: normal; font-variant-caps: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';" class=""> <span class="Apple-converted-space"> </span></span></span>8.8GB of available storage<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt 0.5in; font-size: 12pt; font-family: Calibri; text-indent: -0.5in;" class=""><span class="">•<span style="font-style: normal; font-variant-caps: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';" class=""> <span class="Apple-converted-space"> </span></span></span>More info from Apple, including models: <a href="http://www.apple.com/macos/how-to-upgrade/#hardware-requirements" style="color: rgb(149, 79, 114); text-decoration: underline;" class=""><span style="color: rgb(11, 76, 180);" class="">http://www.apple.com/macos/how-to-upgrade/#hardware-requirements</span></a><o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Calibri;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: Calibri;" class="">If you have questions or need assistance, please contact the IS&T Service Desk at <a href="mailto:helpdesk@mit.edu" style="color: rgb(149, 79, 114); text-decoration: underline;" class=""><span style="color: rgb(0, 0, 233);" class="">helpdesk@mit.edu</span></a> or 617.253.1101. You can also <a href="http://ist.mit.edu/help" style="color: rgb(149, 79, 114); text-decoration: underline;" class=""><span style="color: rgb(0, 0, 233);" class="">submit a request online</span></a>.<span style="font-size: 11pt;" class=""><o:p class=""></o:p></span></div></div><span style="font-family: HelveticaNeue; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); float: none; display: inline !important;" class="">_______________________________________________</span><br style="font-family: HelveticaNeue; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" class=""><span style="font-family: HelveticaNeue; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); float: none; display: inline !important;" class="">Macpartners mailing list</span><br style="font-family: HelveticaNeue; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" class=""><a href="mailto:Macpartners@mit.edu" style="color: rgb(149, 79, 114); text-decoration: underline; font-family: HelveticaNeue; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" class="">Macpartners@mit.edu</a><br style="font-family: HelveticaNeue; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" class=""><a href="http://mailman.mit.edu/mailman/listinfo/macpartners" style="color: rgb(149, 79, 114); text-decoration: underline; font-family: HelveticaNeue; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" class="">http://mailman.mit.edu/mailman/listinfo/macpartners</a><br style="font-family: HelveticaNeue; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" class=""></div></blockquote></div><br class=""></div></body></html>