Today I got a update: 27" iMac firmware 1.0 update. I think I got 27" iMac firmware update not long time ago. So quickly Apple released another one. This one is very interesting. Based on its description, during the update, the fan runs at full speed and I did hear the strong noise. Here is snap-shot of the update:
and here is the description:
- This update fixes Target Display Mode compatibility issues on 27-inch iMac computers.
When your computer restarts a gray screen will appear with a status bar to indicate the progress of the update. Your Computer's fans will run at full speed during the update but will return to normal speed once the update completes. Do not disturb or shut off the power on your iMac during this update.
The following is the summary of space difference between before and after the update:
| Command: df -lak | Used(Kilobytes in 1024-blocks) |
|---|---|
| Before | ...567,064 |
| After | ...288,356 |
| Difference (A-B) | -278,708 |
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