i want extend my disk space :#df -hFilesystem      Size  Used Avail Use% Mounted onudev             10M     0   10M   0% /devtmpfs           403M   17M  387M   4% /run/dev/sda1        19G   18G  183M  99% /tmpfs          1006M  208K 1006M   1% /dev/shmtmpfs           5.0M     0  5.0M   0% /run/locktmpfs          1006M     0 1006M   0% /sys/fs/cgroupDropbox         465G  391G   74G  85% /media/psf/Dropboxtmpfs           202M  8.0K  202M   1% /run/user/132tmpfs           202M   20K  202M   1% /run/user/0#fdisk -lDevice     Boot    Start      End  Sectors  Size Id Type/dev/sda1  *        2048 40136703 40134656 19.1G 83 Linux/dev/sda2       40138750 41940991  1802242  880M  5 Extended/dev/sda5       40138752 41940991  1802240  880M 82 Linux swap / Solarisi expand VM Disk space from 20GB to 45GB#fdisk -lDevice     Boot    Start      End  Sectors  Size Id Type/dev/sda1  *        2048 40136703 40134656 19.1G 83 Linux/dev/sda2       40138750 94371839 54233090 25.9G  5 Extended/dev/sda5       40138752 94371839 54233088 25.9G 82 Linux swap / Solaris#df -hFilesystem      Size  Used Avail Use% Mounted onudev             10M     0   10M   0% /devtmpfs           403M  6.0M  397M   2% /run/dev/sda1        19G   18G  179M 100% /tmpfs          1006M  208K 1006M   1% /dev/shmtmpfs           5.0M     0  5.0M   0% /run/locktmpfs          1006M     0 1006M   0% /sys/fs/cgroupDropbox         465G  391G   74G  85% /media/psf/Dropboxtmpfs           202M  8.0K  202M   1% /run/user/132tmpfs           202M   20K  202M   1% /run/user/0how Can i expand /dev/sda1 
extend Disk space
hard disk;disk usage;fdisk