## page was copied from Lubuntu/Documentation/CheckCD ## page was renamed from Lubuntu/DocumentationHelp/CheckCD <> ||<>|| = Check the iso and CD = Get Lubuntu from [[https://help.ubuntu.com/community/Lubuntu/GetLubuntu | GetLubuntu]]. A corrupted file download is not common but still we suggest that you check both the downloaded file for corruption and the CD for a bad burn before you report any problems with Lubuntu. 1. Check both at once with the [[http://dedoimedo.com/images/computers_new_1/ubuntu-install-boot-splash.png|"Check Disc for defects"]] (only on the Desktop ISO) or 1. Check for file corruption with md5sum [[https://help.ubuntu.com/community/Lubuntu/Documentation/CheckISO_CD#Check_the_iso_file|(see below)]] or by using BitTorrent (automatically checks for corruption) 2. Check that the CD Burning utility verifies the burn. More info [[https://help.ubuntu.com/community/BurningIsoHowto|here]] or check the burned CD [[https://help.ubuntu.com/community/Lubuntu/Documentation/CheckISO_CD#Check_the_CD|(see below)]]. == Check the iso file == On '''Linux''' systems: Start a terminal emulator e.g. LXterminal and type {{{ md5sum /path/to/lubuntu*.iso }}} You have to replace the path to the correct path, if it’s in Downloads change the command to {{{ md5sum ~/Downloads/lubuntu*.iso }}} On '''BSD''' systems, including '''Mac Os X''': Start a terminal emulator and type {{{ md5 /path/to/lubuntu*.iso }}} On '''Windows''' Systems there are many freeware md5sum programs out there. Then compare the resulting md5sum with the md5sum available from the Ubuntu servers. All md5sum for recent iso’s may be found in [[http://cdimage.ubuntu.com/lubuntu/releases|http://cdimage.ubuntu.com/lubuntu/releases]]. == Check the CD == 1. On standard desktop (not alternate) CD’s when booting from CD you may choose “Check Disk for Defects”. 2. Alternatively you can create an iso {{{ dd if=/dev/cdrom of=~/cdrom_image.iso }}} and check the iso with md5sum