IT notes

macOs sparseimage

To create an install disk using an spare disk: $ hdiutil create -size 6GB -fs JHFS+ -volname "macOS_installmedia" -type SPARSE ~/Desktop/macOS_installmedia Mount it (or double-click in Finder to mount): $ hdiutil mount ~/Desktop/macOS_installmedia.sparseimage Use the createinstallmedia: $ sudo /Applications/Install\ macOS\ High\ --volume /Volumes/macOS_installmedia --applicationpath /Applications/Install\ macOS\ High\

vm tools

vmware tools guest FreeBSD While running FreeBSD as a guest on VMWARE the vm-tools can be installed with this: $ pkg install open-vm-tools-nox11 Later enable them on /etc/rc.conf: vmware_guest_vmblock_enable="YES" vmware_guest_vmhgfs_enable="YES" vmware_guest_vmmemctl_enable="YES" vmware_guest_vmxnet_enable="YES" vmware_guestd_enable="YES"

checksum offload

TCP offload engine TOE is a technology used in network interface cards (NIC) to offload processing of the entire TCP/IP stack to the network controller. It is primarily used with high-speed network interfaces, such as gigabit Ethernet and 10 Gigabit Ethernet, where processing overhead of the network stack becomes significant. On Virtual Guest disabling the cheksum may boost the newtork speed, for example on GCE when using FreeBSD add this to the /boot/loader.