![]() If decompression fails with an error message about how the file format is not recognized, then especially if running file on it is unable to identify the format as XZ compressed data (though sometimes otherwise), you likely have a corrupted or incomplete download. ![]() Dealing with possibly incomplete or corrupted files But in that case you can just use a Windows method (see the official instructions). So if you're running Ubuntu in Windows 10 with WSL, those instructions don't apply. It is not typically possible to write a flash drive with dd in a WSL system. In that case, use this command instead: sudo dd if=ubuntu-19.10-preinstalled-server-arm64+ of= device bs=32M img file, then don't use that command above with xzcat. If you have a corrupted file, xzcat will fail, just as unxz would. ![]() Run this command, replacing device with the device name you found: xzcat ubuntu-19.10-preinstalled-server-arm64+ | sudo dd of= device bs=32M Make sure this is not the name of a device that contains any data you wish to keep! One way to do this is in Disks (your file browser). But assuming it's Ubuntu, here's a summary:įind the name of the device that you are writing it to. The best way to do this differs depending on what operating system you're using to do it. Assuming the file was correctly and successfully downloaded (see below), you can use the official instructions to flash this image to a storage device. The particular file you've downloaded is a preinstalled image for Ubuntu Server 19.10. ![]() Flashing the preinstalled Ubuntu Server image in particular xz file (unless the file is very misleadingly named), only decompression is needed. tar.xz file, since tar supports decompressing and extraction through a single command. Note that this is different from what you would usually do for a. xz file, you can pass the -k/ -keep option: unxz -k ubuntu-19.10-preinstalled-server-arm64+ That will extract ubuntu-19.10-preinstalled-server-arm64+raspi3.img and, assuming it succeeds, delete ubuntu-19.10-preinstalled-server-arm64+. You can uncompress it with: unxz ubuntu-19.10-preinstalled-server-arm64+ It's worth noting that everything in this article also works on the Windows Subsystem for Linux, which allows you to install the Bash shell inside of Windows 10 or Windows 11, although there are other ways to open tar.gz files on Windows as well.Ubuntu-19.10-preinstalled-server-arm64+ is the result of compressing a single file, ubuntu-19.10-preinstalled-server-arm64+raspi3.img, with xz. You just need to use the appropriate tar command line options. bz2 extension suffix indicates that the archive has been compressed, using either the gzipĬompression algorithm. The tar command will work happily with both types of file, so it doesn't matter which compression method was used-and it should be available everywhere you have a Bash shell. Someone somewhere is probably still using tar with tape. Forty years later we are still using the tar command to extract tar files on to our hard drives. Tar files date all the way back to 1979 when the tar command was created to allow system administrators to archive files onto tape. Portion of the file extension stands for tape archive, and is the reason that both of these file types are called tar files. Extension is uncompressed, but those will be very rare.
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