Automatic partitioning is safe and fast for standard installs—choose it if unsure. Manual partitioning is needed if you dual-boot, use LVM, or want separate filesystems for different partitions. Plan ...

For anyone wondering how to do this from OS X, you can mount the EFI partition using the mount command. It's a FAT partition, but isn't marked as such, so you'll need to specify a partition type, for ...