![]() In Mac OSX, Unix and Linux everything is a file, so you can use this command to monitor opened processes, files, devices…etc. You may see Fseventsd process and it’s process id in the list, use “sudo kill -9” to kill this process.Īdditional Information: List Open Files (lsof) is a useful tool that will show you opened files. “lsof | grep” then drag the drive to the terminal window to complete the path to the drive’s mount point, and press enter. To terminate the Fseventsd process, login to Terminal and type in: Events are logged in the hidden “.fseventsd” directory at the root of the drive. But, when trying to partition, Disk Utility said that it cannot unmount the disk. It is to log the changes in the file system. So I tried to use Disk Utility to erase the startup disk and make a new partition. You may want to login to Terminal mode and check if there is any process locks down the drive for example: fseventsd process.įseventsd is a file system “events” notifier, running as a daemon process, used by Spotlight, Time Machine and other 3rd party softwares. If you receive an alert message that a disk is missing or has failed: Use First Aid to repair the RAID set. There is a chance that some background process may lock the drive and prevent it from being formatted, please turn off Spot Light and Time Machine.įor more information about Spot Light and Time Machine, please visit:ģ. ![]() As the hard drive becomes inaccessible, except the erase button, all other operations become disabled or are greyed out. ![]() doesnt offer a simple cloning method and swaps your OS to a new hard drive. If you are unable to view the Macintosh hard drive in disk utility, here the disk is not mounted. In order to force your Mac to unmount disk, follow the below steps: On your Mac PC, go to the Disk Utility, choose a disk set that you wish to unmount. If your drive has been used under Windows, it might be in Windows NTFS / FAT format, you will need to change the partition format to GUID partition or Apple Partition Map in order to format and mount the drive in disk utility.įor more information about partition in Mac OS disk utility, please check: How do I partition my drive in Mac OS X®?Ģ. We can use any type of disk like SATA, SSD, SAS, SAN storage iSCSI or FC. Make sure to check that the USB drive cable or HDMI cable used to connect the hard drive disk utility is properly plugged into your device. Please do the trouble shooting as following:ġ.
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