# fdisk -l Disk /dev/sda: 146.7 GB, 146773311488 bytes 255 heads, 63 sectors/track, 17844 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 14 104448 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 14 275 2096512 82 Linux swap / Solaris Partition 2 does not end on cylinder boundary. /dev/sda3 275 17845 141131072 83 Linux Partition 3 does not end on cylinder boundary. Disk /dev/sdb: 595.9 GB, 595926712320 bytes 255 heads, 63 sectors/track, 72450 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdb1 1 72450 581954593+ 83 Linux #
# fdisk -l /dev/sdb Disk /dev/sdb: 104 MB, 104857600 bytes 64 heads, 32 sectors/track, 100 cylinders Units = cylinders of 2048 * 512 = 1048576 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000
# fdisk -l -o +UUID
# fdisk /dev/sdb Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel Building a new DOS disklabel. Changes will remain in memory only, until you decide to write them. After that, of course, the previous content won't be recoverable. The number of cylinders for this disk is set to 72450. There is nothing wrong with that, but this is larger than 1024, and could in certain setups cause problems with: 1) software that runs at boot time (e.g., old versions of LILO) 2) booting and partitioning software from other OSs (e.g., DOS FDISK, OS/2 FDISK) Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite) Command (m for help): p Disk /dev/sdb: 595.9 GB, 595926712320 bytes 255 heads, 63 sectors/track, 72450 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System Command (m for help): n Command action e extended p primary partition (1-4) p Partition number (1-4): 1 First cylinder (1-72450, default 1): Using default value 1 Last cylinder or +size or +sizeM or +sizeK (1-72450, default 72450): Using default value 72450 Command (m for help): p Disk /dev/sdb: 595.9 GB, 595926712320 bytes 255 heads, 63 sectors/track, 72450 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdb1 1 72450 581954593+ 83 Linux Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. WARNING: Re-reading the partition table failed with error 16: Device or resource busy. The kernel still uses the old table. The new table will be used at the next reboot. Syncing disks. #
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