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Dell laptop XPS/Precision with UHD (4K) monitor is very beautiful model. But!! After upgrades BIOS to 1.2.x, your monitor will start flickering. If you wanna reduce this problem, the best way is downgrade BIOS to 1.2.0. Unfortunately, the BIOS version 1.2.0 download link has been removed from Dell official site... Here is archives: Dell XPS 15 BIOS (1.2.0): http://ul.to/btfr737x https://drive.google.com/open?id=0B6x3YTf2Q9R8cE53aU0zZVJNdkE Dell Precision 15 BIOS (1.2.0): http://ul.to/m7og95rx https://drive.google.com/open?id=0B6x3YTf2Q9R8OGVSUy16UzVGQnM PS. Somebody says another way is that downgrade Intel driver to version 4331, 4352 or others can solve this problem. ...I tried, but the monitor is still flickering.

If you've not install ESXi...... Download VIB for Realtek NIC Integrade VIB to ESXi Image use ESXi-Customizer . Install ESXi from the new ESXi image If you've installed ESXi...... Download VIB for Realtek NIC Upload VIB to your ESXi datastore Enable SSH service on your ESXi Use this command to install the VIB esxcli software vib install -v /vmfs/volumes/datastore1/VMware_bootbank_net-r8169_6.011.00-2vmw.510.0.0.799733.vib Reboot your ESXi host Download VIB for Realtek NIC: VMware_bootbank_net-r8168_8.013.00-3vmw.510.0.0.799733 VMware_bootbank_net-r8169_6.011.00-2vmw.510.0.0.799733

How to mount Ubuntu ISO to /cdrom while installing ubuntu. You must copy installation iso to your usb stick. press ALT+F2 mkdir /media/usb mount -t vfat /dev/sdb /media/usb mount -t iso9660 -o loop /media/usb/ubuntu-12.04.3-server-amd64.iso /cdrom press ALT+F1 back to installation, select "Load debconf prexonfiguration file" and retry mount cdrom

By the MBR limit, you can have 2TB only. If you want to increase your disk over 2TB, you must convert MBR to GPT. In Microsoft, they will ask you to use diskpart to delete volume on your disk, and then convert to GPT. If you do that, you'll lost all data. Now, another solution here. You can use gptgen to convert MBR to GPT without lost any data. GPTGEN download link: http://sourceforge.net/projects/gptgen/