Solution to Ubuntu installation failure

The failure to install Ubuntu on a USB flash disk solved the problem of tossing your computer over the weekend. The computer is a SATA + SSD hard disk, and there is no optical drive. SSD is used as a notification cache by default, if you want to install ubuntu on ssd, you will start to make the downloaded ubuntu LiveCD into a USB flash drive.
The failure to install Ubuntu on a USB flash disk solved the problem of tossing your computer over the weekend. The computer is a SATA + SSD hard disk, and there is no optical drive. SSD is used as a notification cache by default, preparing to install ubuntu on ssd, I started to make the downloaded ubuntu LiveCD into a USB flash drive, so that you can install it conveniently (the main cause of various troubles is my computer Later, I will write a record about this computer which does not need to be split and used by ssd. here we will mainly talk about the issue of making the boot disk ). Many tutorials on the Internet use UltraISO to write images and boot into the USB flash drive. However, the experiment found that 12.04 is invalid. later, I tried unetbootin, which is also invalid. many people on the Internet said yes, a little depressed, restart N times, or not; and then try Universal-USB-Installer again, I thought it was okay, but still not. various forums, find solutions, don't know why, after 10.10, ubuntu images cannot be used to create a USB flash drive, but they can still be implemented using ImageWriter. However, you need to change the image suffix ISO to RAW. After the preparation, the installation will be started smoothly ......