tried unsuccessfully to use my old system on a new iMac.
iMac is running High Sierra. El Capitan from backup is stored on a second partition.
Vmdk file is only generated as su. But not with the -partitions property.
The devicename disk1s4 must be used, due to access error when using /dev/disk1 -partitions 4,5VBoxManage internalcommands createrawvmdk -filename capitan.vmdk -rawdisk /dev/disk1s4
Then in Virtualbox the vmdk file does not work, also access error.
Tried several settings for permissions and user and group on the vmdk file, without any success.
So I need help please, because the old El Capitan system is still needed.
This is the error message I get:
Please any help.Permission problem accessing the file for the medium '/Users/xxx/capitan.vmdk' (VERR_ACCESS_DENIED).
Fehlercode:VBOX_E_FILE_ERROR (0x80BB0004)
Komponente:MediumWrap
Interface:IMedium {4afe423b-43e0-e9d0-82e8-ceb307940dda}
Callee:IVirtualBox {9570b9d5-f1a1-448a-10c5-e12f5285adad}
Callee RC:VBOX_E_OBJECT_NOT_FOUND (0x80BB0001)