Using your FOG server to backup and restore Macintosh computers
Contents
The goal
The goal of this article is to outline how to use your FOG server to backup and restore Macintosh computers. I utilize Clonezilla for the actual backup/restore process, but it is easily incorporated into an existing FOG server. The basic outline for the process is that we modify the FOG server's DHCP settings to allow it to talk to Macs, send over a GRUB2 boot.efi file with
Please consider this a work in progress. While the procedure here works for the hardware I have been working with, I do not have the ability to test it out for different types of Macs.
I have done my best to recreate, from scratch, the method necessary to accomplish this from start to finish. I spent nearly three weeks straight at work trying a variety of options and ideas, so there may be rough spots. Also, note that there is almost definitely a few unnecessary variables and such here and there. I am not fully experienced with everything I cover; I simply know that what I currently have works. If there is anything you notice that is unneeded and can be removed, or if there are any part of this that can be improved, please feel free to provide assistance. Thanks. :)
My setup
The setup I used for this experiment is as follows-
Lenovo x61 Notebook Laptop - My FOG server. Installed on Ubuntu 11.10.
Macbook(13-inch, mid-2009) - The target computer for this operation.
A crossover cable was used to provide the connection between the two computers.
Modifying your DHCP server to be able to communicate with a Mac
I started with the idea of getting a Macbook to try to load the FOG boot files, to see if it could be done. But first, we need our DHCP server to be able to talk to a Mac in the first place. This wiki article provided a good base to work with: http://www.fogproject.org/wiki/index.php?title=How_to_get_Macintosh%27s_Netboot_working_with_your_FOG_server
This webpage also provides further info on the subject- https://docs.math.osu.edu/linux/how-tos/bsdp_with_isc_dhcp/
We need to add this code to our dhcpd.conf file.
Using the terminal, type- sudo nano /etc/dhcp/dhcpd.conf
And append the following text to the end of the file-
{
ddns-update-style none;
ddns-updates off;
ignore client-updates;
allow booting;
authoritative;
class "AppleNBI-i386" {
match if substring (option vendor-class-identifier, 0, 14) = "AAPLBSDPC/i386";
option dhcp-parameter-request-list 1,3,17,43,60;
if (option dhcp-message-type = 1) { option vendor-class-identifier "AAPLBSDPC/i386"; }
if (option dhcp-message-type = 1) { option vendor-encapsulated-options 08:04:81:00:00:67; }
filename "boot.efi";
}
class "AppleNBI-ppc" {
match if substring (option vendor-class-identifier, 0, 13) = "AAPLBSDPC/ppc";
option dhcp-parameter-request-list 1,3,6,12,15,17,43,53,54,60;
#filename "macnbi-ppc/booter";
option vendor-class-identifier "AAPLBSDPC";
if (option dhcp-message-type = 1) {
option vendor-encapsulated-options 08:04:81:00:00:09;
}
elsif (option dhcp-message-type = 8) {
option vendor-encapsulated-options 01:01:02:08:04:81:00:00:09;
}
else {
option vendor-encapsulated-options 00:01:02:03:04:05:06:07;
}
}
subnet 192.168.7.0 netmask 255.255.255.0 {
pool {
range 192.168.7.100 192.168.7.199;
}
default-lease-time 7200; # 2 hours
max-lease-time 86400; # 1 day
option domain-name "alpha.secure.lan";
option routers 192.168.7.1;
option subnet-mask 255.255.255.0;
option broadcast-address 192.168.7.255;
option domain-name-servers 192.168.7.1;
option time-offset -18000; # EST
allow unknown-clients;
}
Now that the Mac can talk to our DHCP server, we need to create the files necessary to boot it.
Constructing your boot file
The GRUB2 Bootloader
GRUB2 will be the bootloader used to load Clonezilla onto the system. In my case, I needed the amd64 efi version. In terminal, type-
sudo apt-get install grub-efi-amd64
This will allow us to create the boot.efi file we will be sending to our Mac.
Ubuntu Minimal CD
At the onset, I simply wanted to find something I could use to boot the Macbook. The Ubuntu minimal cd was the first to work. I still use some of the files from the .iso for the GRUB bootloader.
http://archive.ubuntu.com/ubuntu/dists/oneiric/main/installer-amd64/current/images/netboot/mini.iso
Extract the files from the .iso to a folder, my folder is "minicd" in my Home directory.
Clonezilla
I used Clonezilla Live as the base for the backup and recovery operations. You will need to obtain the .iso file to get all the files we need. For this project I used the clonezilla-live-1.2.12-37-amd64.iso file.
After downloading the file, use Archive Manager to extract the files into the folder of your choice. For my project, I created a folder "Clonezilla Live" in my home folder.
Our boot file is going to contain a cd image embedded into it that hold all the files we need to load GRUB2, and have that boot Clonezilla Live. I used Brasero Disc Burner to create our image. Open up Brasero and create a data project. Here's what we want on our .iso-
From Clonezilla Live - The files vmlinuz and initrd.img, located in the "live" folder.
From the mini.iso - The "boot" folder, and all of its contents. Edit the grub.cfg by replacing its contents with this:
if loadfont /boot/grub/font.pf2 ; then
set gfxmode=auto
insmod efi_gop
insmod efi_uga
insmod gfxterm
terminal_output gfxterm
fi
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
menuentry "Clonezilla" {
linux /vmlinuz. root=/dev/nfs nfsroot=192.168.1.2:/tftpboot/clonezilla ip=dhcp boot=live live-config nomodeset noswap nolocale edd=on vga=788 fetch=http://192.168.1.2/filesystem.squashfs
initrd /initrd.img
}
And that's everything. Burn your cd image into an .iso file, for example, macboot.iso.
As you may have noticed, the Clonezilla entry has a parameter to fetch a file from our FOG server. Copy filesystem.squashfs into /var/www/.
To create your GRUB2 efi file in terminal, run the following(Note: this all has to be on one line. I added breaks for readability)-
sudo grub-mkimage --format=x86_64-efi --output=boot.efi --memdisk=/location/of/iso/macboot.iso ntfs hfs appleldr boot cat efi_gop efi_uga elf fat hfsplus iso9660 linux keylayouts memdisk minicmd part_apple ext2 extcmd xfs xnu part_bsd part_gpt search search_fs_file chain btrfs loadbios loadenv lvm minix minix2 reiserfs memrw mmap msdospart scsi loopback
I don't know if we need every last parameter; I added these based on research and by what I thought could be necessary.
When that's done, copy the boot.efi file into your /tftpboot directory.
You are now ready to try to netboot your Mac. Select the Clonezilla entry when the menu appears. If all goes well, Clonezilla will load itself and you can begin cloning your Mac.
