In Linux, disk sector size can be determined with fdisk -l | grep "Sector sizeĪnd block size can be determined with blockdev -getbsz /dev/sda. Warning: The resulting partition is not properly aligned for best performance. Sudo parted -script skysails-mastercontrol-image-genericx86-64.wic unit s mkpart logical ext4 5471057s 8471055s Sudo parted -script skysails-mastercontrol-image-genericx86-64.wic unit s mkpart logical ext4 4243969s 5471055s Sudo parted -script skysails-mastercontrol-image-genericx86-64.wic unit s mkpart extended 4243968s 8471055s Sudo parted -script skysails-mastercontrol-image-genericx86-64.wic unit s print free Sudo parted -script skysails-mastercontrol-image-genericx86-64.wic unit s rm 4 Sudo parted -script skysails-mastercontrol-image-genericx86-64.wic unit s rm 5 The lsof command is short for list open files, and sending the results via a pipe to the grep pattern-recognition command and using /Volumes as the match shows only open files related to. In fact, instead of piping lsof output to less or grep, here are a few other ways you. Sudo parted -script skysails-mastercontrol-image-genericx86-64.wic unit s rm 6 The Linux system in this example has two hard disks (sda and sdb). Linux commands cat /sys/class/block/sda/size fdisk /dev/sdbĭd if=/dev/zero of=/dev/sdb bs=512 count=1ĭf - disk free display the amount of available disk space for file system df -human-readable df doesnt show partitions, rather Filesystems df -h -x tmpfs -x devtmpfs` rootfs / ramfs rootfs is a special instance os tempfs image used in initram tmpfs (aka ramfs) partitions are mounted from an internal RAM disk You can’t unmount rootfs du - disk usage du -ks If not, consider something like partimage. In such cases, dd + compression is the simplest way. For some tasks, a byte-for-byte copy is needed (say, data recovery from a failing disk). You can compress the resulting image using gzip or xz: sudo dd if=/dev/sda1 | xz > /tmp/ubuntu.imageĭepends on what you call a better tool.
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