Lubuntu is a complete Operating System that ships the essential apps and services for daily use: office applications, PDF reader, image editor, music and video players, etc. Using USB to ISO, I put Ubuntu 12.04 i386 on my USB and then connected it to another machine. I continue to click next and on the next page I choice the Guest operating system type for Linux and for Version type i choice Ubuntu. Ubuntu installation wizard will automatically detect your Windows if you are installing in dual boot, but in some cases, if you encounter "This computer currently has no detected operating system" warning, then this guide will help you to resolve this issue. Failed software installations or updates can cause problems with Ubuntu not starting. I find it quite strange that I have to enable this in order to make my installation work, as I never did this with Ubuntu. It show Operating system not found in the VM. Vmware安装过程很简单,很快就装好了,但是在VM中安装Ubuntu16.04遇到了一个严重的问题:operating system not found. If I enable the third option (see pic), then I can boot the CD in UEFI mode. Try disconnecting any drives that don't contain an operating system." Click Start to check the hard disk.. : This is the file system check tool, which scans the hard disk drive and repairs any errors it finds. So the OS won't boot if you haven't plugged in your USB. 2. 问题. If there is nothing wrong with the hard drive, you can find other solutions for “operating system is not found” on Sony Vaio or other computer. There is a print screen with the settings for the Virtual machine created under ESXI. I have re-installed Ubuntu entirely about 3 times now, then install Linux Mint 15, also 2 times, and every time the result is the same. I just get the message Operating system not found. Right click the hard disk you want to check. Launch AOMEI Partition Assistant. So that works. On the machine, when I select boot from USB, it gives me the error, "An operating system wasn't found. Eventually, I made to install Ubuntu 12.10. clean: Use this to make free space, useful if the reason for Ubuntu not booting is a lack of HDD space. After the new update to 13.10, the BIOS won't find the OS any more. I found an option in my BIOS to enable UEFI, but it is disabled by default. Operating system not found. thank you for your help Select Surface Test.. 3. dpkg: With this, you can repair broken software packages. If you need more, you can use the Discover Software Center to download the required app that suits your needs, for free. Re: Operating System Not Found Post by majpooper » Thu Jan 28, 2016 3:33 am I jad this problem a long time ago - it turned out it was the boot order in the bios. I updated to 13.04 in April - no trouble there. 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