If the hard drive was not automatically mounted, no special action is necessary. If it was automatically mounted, you should remove its entry from /etc/mtab and /etc/fstab.
Yes you can modify your computer but that will require very high level of skill to modify your operating system. If you are using Linux then it is easier to modify the way your computer runs.
yum is a package manager in several Linux distributions, such as Yellow Dog Linux, Fedora, and Red Hat. It has more than one function,but is primarily used to install and remove packages, and control downloading them from a repository.
Most modern Linux distributions have a method of updating the system without requiring a clean install. The exact procedure for this varies by distro.
Technically yes, but for the average person, it's not feasible. With Linux, you already have a base you can modify.
This is dependent on the package management system. Debian has Synaptic.
No.
Yes. Linux is a computer operating system.
Linux is an open system, Unix is not.
It can be. The kernel has a real time process scheduler, and there's a popular real time patchset that is often used to modify the kernel to be a more dedicated real-time system.
A Linux system administrator can verify that the Linux system is forwaring IPV4 packets by querying the sysctl kernel to see if forwarding is enabled.
The first file system Linux supported was the MINIX file system.
the kernal is the central part of the Linux operating system and determines how the system works - all distributions of Linux are based on this.