从 Yosemite B6 升级到正式版后，Recovery HD 恢复分区会消失

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这是一个创建于 3821 天前的主题，其中的信息可能已经有所发展或是发生改变。

貌似是因为安装程序将系统分区转化为CoreStorage模式了，而Recovery HD还是普通模式，所以无法显示了。
用 diskutil list查看一下是否有CoreStorage，然后“diskutil cs revert /”转换

效果：

	$ diskutil list
	/dev/disk0
	#: TYPE NAME SIZE IDENTIFIER
	0: GUID_partition_scheme *500.3 GB disk0
	1: EFI EFI 209.7 MB disk0s1
	2: Apple_CoreStorage 499.4 GB disk0s2
	3: Apple_Boot Recovery HD 650.0 MB disk0s3

view raw Apple_CoreStorage hosted with ❤ by GitHub

	$ diskutil cs revert /
	Started CoreStorage operation on disk1 Macintosh HD
	Switching partition from Core Storage type to original type
	Reclaiming space formerly used by Core Storage metadata
	Even though the disk is now fully reverted, you should reboot soon to re-mount your reverted disk from the actual original partition
	Removing Physical Volume
	Destroying Logical Volume Group
	Remounting former Physical Volume as normal disk
	Core Storage LV UUID:
	Core Storage disk: disk0s2
	Finished CoreStorage operation on disk1 Macintosh HD

view raw convert hosted with ❤ by GitHub

	$ diskutil list
	/dev/disk0
	#: TYPE NAME SIZE IDENTIFIER
	0: GUID_partition_scheme *500.3 GB disk0
	1: EFI EFI 209.7 MB disk0s1
	2: Apple_HFS Macintosh HD 499.4 GB disk0s2
	3: Apple_Boot Recovery HD 650.0 MB disk0s3