Greetings, My iMac desktop host machine is one month old. It has the latest OS version and is also using a 1TB SSD using APFS (Apple File System). On the SSD is my PD13 Win10 VM. This has happened TWICE now: 1) starting to reclaiming disk space/shrinking the VM 2) going on with other business when the ENTIRE machine locks up and becomes unresponsive 3) I have to power off/on resulting in a corrupted VM file AND a corrupted Mac file system 4) Disk Utility cannot repair it. The output from the repair attempt from Disk Utility is always: Verifying file system. Volume could not be unmounted. ==> I also tried repairing it from the boot disk; same results. Using live mode. Performing fsck_apfs -n -l -x /dev/rdisk1s1 Checking volume. Checking the container superblock. Checking the EFI jumpstart record. Checking the space manager. Checking the object map. Checking the APFS volume superblock. Checking the object map. Checking the fsroot tree. error: invalid dstream.size (494593892352), is greater than dstream.alloced_size (391420366848) error: xf : INO_EXT_TYPE_DSTREAM : invalid dstream error: inode_val: object (oid 0x18471a): invalid xfields fsroot tree is invalid. The volume /dev/rdisk1s1 could not be verified completely. File system check exit code is 0. Restoring the original state found as mounted. Operation successful. 5) The only solution is to REINSTALL the Mac OS, restore everything from Time Machine, and restore the entire VM backup file Is anyone else seeing this? Is it a PD13 issue or is it an APFS issue? I think the only way to safely reclaim disk space is to quit out of everything else, then reclaim space. I have reclaimed disk space many times successfully but this has happened twice now. Any advice or observations would be much appreciated.