修复你的物品 社区 商店

Model A1419 / EMC 2806 / Late 2014 or Mid 2015. 3.3 or 3.5 GHz Core i5 or 4.0 GHz Core i7 (ID iMac15,1); EMC 2834 late 2015 / 3.3 or 3.5 GHz Core i5 or 4.0 GHz Core i7 (iMac17,1) All with Retina 5K displays

573 个问题 查看全部

更多选项

Mac Recovery OS Reinstall Error - Failed to mount outer dmg

My iMac hard drive went bad (confirmed by apple store test) so I ordered the 500 GB SATA SSD drive kit from iFixit. Install went great and now stuck on trying to install Mac OS Sierra on the new drive. It runs for ~5 mins and then states error occurred. When I view the install log the last two lines I see are:
: Couldn't mount base system dmg! (error code 110)
: Failed to mount outer dmg

In Disk Utility I see the OS X Base System disk image as well as Apple SSD internal media. I've run First Aid on all entries in disk utility. Any other suggestions?

已回答！ 显示答案 我也有这个问题

这是一个好问题吗？

是 否
得分 0
添加一条评论

1个答案

筛选条件:
最有帮助的 最新 最老的
已选择的解决方案

更多选项

Internet recovery can get corrupted in the network connection. I’ve found using a bootable OS installer is easier and faster once you’ve made it.

Do you have access to another Mac and a 32GB USB thumb drive?

这个答案有帮助吗？

是 否
得分 3

12条评论:

Yes Dan. I made a USB installer following the steps in this video https://youtu.be/pRdrpIDgjGo

When I hold the Option key during boot I see the Mac OS Installer I created, but when I select it I get an error screen with a circle with a line through it (like do not enter sign) and the URL support.apple.com/mac/startup

Is there another way to use my USB installer to install the OS on my new hard drive?

由完成的

@joefixitmac - Let’s backup here for a sec which OS did your system have before the drive died? That’s important as Apple changed things on us so if the system was running Sierra you really need to start there as the system firmware needs to be updated to support Ventura or Catalina.

由完成的

Funny you should mention that, Dan. I was thinking about that after I responded and then found this site to confirm my hardware won't work with Ventura https://macmost.com/macos-system-require...

I'm downloading Sierra now and will recreate my USB. I'll let you know how it goes ...

由完成的

@joefixitmac - this system can support up to macOS Big Sur (macOS 11) officially.

由完成的

@danj I'm having problems trying to figure out how to update the USB from the Sierra dmg file I downloaded. If I run the install it tries to install on the current machine and I can't target the USB. I'm not able to use the "createinstallmedia" application from a downloaded dmg. Any suggestions?

由完成的

显示更多的7条评论

添加一条评论

添加你的答案

Joe 将永远感激不已
浏览统计数据:

过去 24 小时： 8

过去 7 天： 42

过去 30 天： 187

总计 3,665