Debian 8.1 with Fog Server

If you install Debian 8.1 only with the DVD1 than you wont have an isc-dhcp-server service. So when you try to install Fog, it will give you a great Failed issue.
Problem : No isc-dhcp-server
To solve this;
1) You have to edit sources list first; go to the terminal and type su and type root password. Then type gedit. Find the /etc/apt/source.list file and open it. After that copy&paste&save this;

deb cdrom:[Debian GNU/Linux 8.1.0 _Jessie_ - Official i386 DVD Binary-1 20150606-13:00]/ jessie contrib main

deb http://httpredir.debian.org/debian jessie main
deb-src http://httpredir.debian.org/debian jessie main

deb http://httpredir.debian.org/debian jessie-updates main
deb-src http://httpredir.debian.org/debian jessie-updates main

deb http://security.debian.org/ jessie/updates main
deb-src http://security.debian.org/ jessie/updates main

2) Return to the terminal and press Ctrl+C if it is still showing gedit.
Type apt-get update to update the list.
3) Now it is time to type apt-get install isc-dhcp-server
Done..

Problem : No subnet mask in dhcpd.conf
To solve this;
1) Edit  /etc/network/interfaces like this..

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
allow-hotplug eth0
iface eth0 inet static
        address 192.168.2.100
        netmask 255.255.255.0 

        gateway 192.168.2.1

Problem : After Sysprep Host unable to finish configuration and keeps restarting..
1) I had used Alcohol Soft to mount some iso files and had removed it after. For 3 days I had searched the solution. It is easy. The registry key is blocking the process. So ;
2) Start regedit and find the key HKLM\SYSTEM\CurrentControlSet\Services\sptd, set "Start" value to 4, reboot
3) Start regedit again and enable all permissions of sptd\cfg key, then delete all of the sptd key in Services, reboot again.
It is possible that you will find it hard to delete the keys. Just shuffle with the permissions, let the "everyone" be the king of the hill..
My sysprep worked like a charm after this. I only lost 3 days.
Heheeh.. 3 days..
Fuck.