<–Įrror (async): Couldn't unmount disk (-69888) Run in terminal 1 to 10，The following message appears after Articleĭonor=disk0s2 Image=/Volumes/Recovery HD Update/BaseSystem.dmg DoVerifyImage=0 DoRepairDonor=0ĬhunkList=/Volumes/Recovery HD Update/BaseSystem.chunklistĬreating recovery partition: async call initiateĬreating recovery partition: async call exit success operation now in progress So as you perform the next tutorial，There are a few minor problems。 Hello,Also can not install the downloaded RecoveryHDUpdat，You will find four。I do not understand the language of the program can only be copied with Open your terminal，Then enter diskutil list to see if you need to rebuild the Recovery HD Then another：According to the present tutorial reconstruction Recovery HD will draw 650M of disk space in your current system disk to use behind，At all events，This is a certain risk，Please think twice。If you know about the Mac and not very confident，Only use Lion Recovery Update v1.0 to rebuild your Recovery HD。，Today, we teach a method of routing，BaseSystem image can be extracted using the Recovery HD from the system tray OS X，And writes it to the current system which。That rebuilding removed the Recovery HD。Īnother：Open the 'Find My Mac' feature requires Recovery HD。 On OS X，There is always a lot of friends because of various reasons，For example, the dual system，For example, change the SSD, etc., etc.，The system will reluctantly comes with Recovery HD comes with this system rescue mode deleted - I do not think that anyone is simply to 650M of disk space and delete it, right =。= Short，While the system can use cmd + r networking at boot time to download，But at the crucial moment，Still very very inconvenient，Not to mention the U disk to do a system disk so the.

Recent changes：26th April, 2015 DESCRIPTION

Could not unmount disk 69888