leave all JDKs at their default location, under /Library/Java/JavaVirtualMachines.System/Library/Java/JavaVirtualMachines/ Library/Internet Plug-Ins/ugin/Contents/Home/įound a directory where my jdks (previously installed) were located. (Ye olde double-click and install method.) This placed java under: I recently installed just the JRE for java 1.8.0_40 using the dmg from Oracle. Java seems to be put in different places depending on whether you've installed the JRE or the JDK, and also depending on what version you are looking for. So, for my own sanity in future, here is what I found: I still struggle with this sort of thing on a Mac. Sometimes you just need to know where java is on the system. This allows the current bootloader (grub2 in this instance) to boot a second bootloader (here, the one you want on your USB stick). Then load up the boot loader by typing chainloader +1.When you figure out which partition is the one you want to boot from, set it as the root for example root=(hd1, mdsdos1).Your internal system will usually be (hd0,0), so try one of the others first. List the files on the partitions to figure out which one is the USB stick.Type ls to list the partitions on the system.When you get to the grub2 screen on booting up, press c to get into command mode.boot from this loaded bootloader, i.e.load the bootloader of the USB stick so it will be used to boot from.figure out what partition represents the bootable USB drive.boot up and launch the command mode of grub2.
The grub2 commandsUsing (hd1, mdsdos1) as the example partition, the summary of commands once you are in the grub2 command line: Below that is information about how to figure out the partition to boot from and what the commands are doing. The first section below gives the commands once I was in the grub2 command line. I’m recording what I did here for reference. Thanks to others who have posted on this topic, I was able to boot from the USB stick using grub2. I made a USB stick using unetbootin, on a Linux machine, booted up, changing the boot setting in BIOS to boot from the stick, and yet no luck.
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