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Mouse cursor disappers inside the VirtualBox VM when installing CentOS 7

Tried to create a VM using CentOS 7 ISO on VirtualBox 6. The VM booted fine and showed WELCOME TO CENTOS 7 screen, the issue is that clicking inside the VM would cause the mouse cursor to disapper. The VM is still usable but you have to use the keyboard to navigate the OS. To workaround the issue, shutdown the VM and change the settings System | Pointing Device to USB Tablet .

CentOS 7 networking not working on VirtualBox

It seems like this is by design (for security?) that CentOS 7 does not have networking working by default. Anyway, to fix this on VM running VirtualBox, edit /etc/sysconfig/network-scripts/ifcfg-enp0s3 and change the line that says ONBOOT=no to ONBOOT=yes and then reboot the machine. Refs: https://superuser.com/questions/915536/centos-7-virtualbox-no-internet-access

QNX Momentics IDE 4.6 not working in Cent OS 5.5

QNX Momentics is not officially supported not even on Cent OS 5.4 much less Cent OS 5.5. Although Cent OS 5.4 should be compatible with Red Hat Enterprise Linux 5.4 Desktop. Also, QNX Momentics 4.6 is working happily in Cent OS 5.4, but users always like to use the latest and the greatest version. Anyway, running QNX Momentics in Cent OS 5.5 shows the following screen: This issue was traced back to be caused by interface change in XULRunner which comes with Firefox browser. See this link and this link for discussion about this issue. But this is not without hope of using the IDE in Cent OS 5.5. echo "org.eclipse.ui/showIntro=false" > /tmp/noWelcomeScreen.ini cd /opt/qnx641/host/linux/x86/usr/bin qde -pluginCustomization /tmp/noWelcomeScreen.ini Enjoy! ~ts

Install Opera 10.10 in CentOS 5.5

How to install Opera in CentOS 5.5 Step 1: Head to Opera's website . Step 2: In "Select distribution and vendor", choose "CentOS". Leave the rest using the default values. Step 3: Hit on Download Opera, and save it to ~/soft. Or any other convenient location. Step 4: After download is done, do: [timus@localhost ~]$ cd ~/soft [timus@localhost soft]$ su [root@localhost soft]# rpm -i opera-10.10.gcc4.shared.qt3.i386.rpm Enjoy using Opera!!! ~ts

Google Chrome cannot be installed in CentOS 5.5 due to lsb requirements

Google Chrome Beta (5.0.375.29 beta) cannot be installed in CentOS 5.5 due to a dependency that cannot be meet. On a freshly installed CentOS, trying to install Chrome using rpm -i google-chrome-beta_current_i386.rpm spits out the following: [root@localhost soft]# rpm -i google-chrome-beta_current_i386.rpm warning: google-chrome-beta_current_i386.rpm: Header V3 DSA signature: NOKEY, key ID 7fac5991 error: Failed dependencies: lsb >= 3.2 is needed by google-chrome-beta-5.0.375.38-46659.i386 xdg-utils is needed by google-chrome-beta-5.0.375.38-46659.i386 Unfortunately, the latest version of "lsb" that comes with CentOS 5.5 is redhat-lsb-3.1-12.3.EL.el5.centos.i386. ~ts :(

CentOS 5.4 netinstall on Virtualbox

Note*: This is applicable to both CentOS 5.4 and 5.5, maybe applicable to older versions as well. Introduction: One of the installation methods possible in installing CentOS 5.4 is network installation or NetInstall. There are good reasons why one would like to do NetInstall and not install from the full CDs. Installing from CD means you have to download monster files. In CentOS 5.4, NetInstall iso file is only 8.9MB whereas the CDs (6 sets) are ~700MB each. So if you are planning to install just once or if you are going to use VirtualBox (note snapshot functionality, branching and cloning), then netinstall would really make sense. Note that to have good installation experience you have to have a fast connection to internet or a mirror in your intranet. To start with, you need to have VirtualBox installed. I am using W7 Home Premium with 8GB as the host machine. This should not matter much actually if you are familiar with VirtualBox. Then download netinstall iso from http:/