You can select what percentage of the storage space is for persistent storage in the casper-rw partition.You can boot it up, install programs, save files, and change settings.But, as soon as you reboot, all your changes are wiped away and youre back to a fresh system.
This can be useful, but if you want a system that picks up where you left off, you can create a live USB with persistent storage. Any changes you make to the systemfor example, saving a file to your desktop, changing the settings in an application, or installing a programwill be stored in the overlay file. Whenever you boot the USB drive on any computer, your files, settings, and installed programs will be there. You wont have to set up your system up from scratch each time you boot. You dont need persistence if youre just using a USB drive to install Ubuntu and then running it from your hard drive afterward. Create A Bootable Persistent Ubuntu Usb Stick Update Most InstalledYou can even update most installed applications, so you can be sure your persistent USB drive has the latest version of the web browser you prefer. Weve tested it with the latest versions of UbuntuUbuntu 18.04 LTS and Ubuntu 19.04and it works. It should also work with Ubuntu-based Linux distributions. ![]() Give Rufus a try if youre using Windows and want to avoid the Linux command line process below. Youll also need a USB drive with enough storage capacity to set up persistence. We used a 16 GB drive, but an 8 GB drive would have worked as well. The bigger the drive, the more persistent storage you can have. ![]() Create A Bootable Persistent Ubuntu Usb Stick Software You InstallFor example, software you install and settings files will be stored here. This partition is also available from within the live Ubuntu on the USB drive. This means any files copied to the usbdata partition from another computer will be accessible to your live Ubuntu. The first command adds the mkusb repository so that Ubuntu knows where to install mkusb from. When mkusb tells you it is going to completely wipe a particular drive, you can be sure its the USB drive you are planning on using and not another device on your system. ![]() Regardless of how it is named, the device that was not in the previous lsblk listing must be the USB drive. Browse to the Ubuntu ISO file you downloaded, select it, and click the green OK button. Weve confirmed thats the USB drive we want to use so we can proceed with confidence.
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