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Apple Computing Products:
macOS - Operating System
Booting from a superduper clone of a fusion drive
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<blockquote data-quote="MacInWin" data-source="post: 1929947" data-attributes="member: 396914"><p>A Fusion drive failure should not impact the boot from external drive. Intel Macs are easily booted from external drives, even with NO internal drive available. </p><p></p><p>For Bill272, the real issue with Fusion drives is that they are just that, a fusion of a small SSD and a large rotating drive. In general, the SSD is used to boot, to be quick at that, and the RDHD is used for storage. However, that general rule is NOT absolute, and if either component fails, or if the fusion is "broken" then what is left is unbootable. However the data on the RDHD may be salvageable, depending on how the Fusion drive actually failed.</p></blockquote><p></p>
[QUOTE="MacInWin, post: 1929947, member: 396914"] A Fusion drive failure should not impact the boot from external drive. Intel Macs are easily booted from external drives, even with NO internal drive available. For Bill272, the real issue with Fusion drives is that they are just that, a fusion of a small SSD and a large rotating drive. In general, the SSD is used to boot, to be quick at that, and the RDHD is used for storage. However, that general rule is NOT absolute, and if either component fails, or if the fusion is "broken" then what is left is unbootable. However the data on the RDHD may be salvageable, depending on how the Fusion drive actually failed. [/QUOTE]
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Apple Computing Products:
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Booting from a superduper clone of a fusion drive
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