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macOS High Sierra.
We always need to upgrade macOS to get the latest features and to maintain the security, stability, compatibility, and performance of our Mac, we need to update the software. Apple recommends that you always use the latest macOS that is compatible with your Mac. However, not all Macs are capable of upgrading to a certain level of macOS. In this article, the case is on iMac versions 2009 and below.
iMac 2009 and below that have DDR 2 when upgrading from High Sierra to Mojave the bios will be locked, so you will be faced with two choices, namely, you can only choose one between Windows or iOS, you can't select the option to choose Windows or iOS
Yep, that was a little information that Zapplerepair could provide about Why iMac 2009 Bios Will Lock When Upgrading From High Sierra to Mojave. If you have problems with your device or want to buy Apple products, Laptops, Surfaces, and others, you can directly contact us at 021-26081043 (Office) or 0877-8885-5868 via WhatsApp. You can also contact us through our social media on Instagram and Facebook Zapplerepair. Or you can go directly to the nearest branch outlet if you want to directly meet us.
Hope this article helps!