How-To Convert .m4a to .mp3 on Mac OS X FREE

VideoLAN – VLC: Official site – Free multimedia solutions for all OS!

File -> Convert / Stream… -> Drop media here -> Choose Profile (Audio – MP3) -> Save as File -> Browse -> Save As: (filename.mp3) -> Save -> Save


Windows To Go – USB Stick Drive

  • DiskPart
    • select disk 1
    • clean
    • create partition primary
    • format fs=ntfs quick
    • select partition 1
    • active
    • exit
  • cp D:\sources\install.wim
  • DISM /apply-image /imagefile:[path]\install.wim /applydir:[USB_drive:]\ /checkintegrity /verify /index:# [1=Pro,2=Core]
  • Bcdboot [USB_drive:]\windows /s [USB_drive:] /f all


Q: DISM – Error: 87 (The apply-image option is unknown.)
A: Install latest “The Windows® Automated Installation Kit (AIK)”

Nagios (rpmbuild) Enterprise Linux


1) /var/tmp/rpm-tmp.4HW54O: line 38: cd: nagios-3.5.0: No such file or directory
2) configure: error: unrecognized option: --datarootdir=/usr/share/nagios

Nagios Tracker – 0000468: redhat – I’m unable to use rpmbuild to build nagios-3.5.0 RPM @RHEL6 – Mantis


tar -zxf nagios-3.5.0.tar.gz
rm nagios-3.5.0.tar.gz
mv nagios nagios-3.5.0
sed -i 's/datarootdir/datadir/' nagios-3.5.0/nagios.spec
tar -czf nagios-3.5.0.tar.gz nagios-3.5.0
rpmbuild -tb nagios-3.5.0.tar.gz
ls rpmbuild/RPMS/*/nagios-3.5.0*rpm

hosts file Mac OS X Windows

hosts (file) – Wikipedia, the free encyclopedia

Error 3194, Error 17, or “This device isn’t eligible for the requested build”

How can I reset the Hosts file back to the default?

Kernel panic – not syncing: VFS: Unable to mount root fs on known-block(0,0)

Kernel panic - not syncing: VFS: Unable to mount root fs on known-block(0,0)

assuming your GRUB (/boot/grub/grub.conf) have something like this:

# grep -E "^hiddenmenu|^timeout" /boot/grub/grub.conf

Try holding “Ctrl” at GRUB splash/menu screen and then select previously working kernel. If that won’t help then boot into a rescue mode and do following:

# yum remove kernel-VERSION
# yum update kernel

reboot your system and you _SHOULD_ be OK)