【LINUX学习】磁盘分割之新建与删除

255 heads, 63 sectors/track, 522 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes    Device Boot      Start         End      Blocks   Id  System /dev/sda1   *           1          13      104391   83  Linux /dev/sda2              14         522     4088542+  83  Linux Disk /dev/sdb: 3221 MB, 3221225472 bytes 255 heads, 63 sectors/track, 391 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk /dev/sdb doesnt contain a valid partition table Disk /dev/sdc: 3221 MB, 3221225472 bytes 255 heads, 63 sectors/track, 391 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes    Device Boot      Start         End      Blocks   Id  System /dev/sdc1   *           1         131     1052226   82  Linux swap / Solaris Disk /dev/sdd: 3221 MB, 3221225472 bytes 255 heads, 63 sectors/track, 391 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes    Device Boot      Start         End      Blocks   Id  System ---也可以指定设备， [root@localhost /]# fdisk -l /dev/sdc Disk /dev/sdc: 3221 MB, 3221225472 bytes 255 heads, 63 sectors/track, 391 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes    Device Boot      Start         End      Blocks   Id  System /dev/sdc1   *           1         131     1052226   82  Linux swap / Solaris [root@localhost /]# fdisk -l /dev/sda Disk /dev/sda: 4294 MB, 4294967296 bytes 255 heads, 63 sectors/track, 522 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes    Device Boot      Start         End      Blocks   Id  System /dev/sda1   *           1          13      104391   83  Linux /dev/sda2              14         522     4088542+  83  Linux ---创建一个主分区，如果使用默认值，会在建立第一个分区时就将整个磁盘使用完。 [root@localhost /]# fdisk /dev/sdd Command (m for help): n Command action    e   extended    p   primary partition (1-4) Partition number (1-4): 1 First cylinder (1-391, default 1): 1 Last cylinder or +size or +sizeM or +sizeK (1-391, default 391): =直接按enter键默认391 Using default value 391 Command (m for help): p Disk /dev/sdd: 3221 MB, 3221225472 bytes 255 heads, 63 sectors/track, 391 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes    Device Boot      Start         End      Blocks   Id  System /dev/sdd1               1         391     3140676   83  Linux Command (m for help): n --继续添加 Command action    e   extended    p   primary partition (1-4) Partition number (1-4): 2 No free sectors available---没有可用空间了！ --删除刚才建立的那个分区。 Command (m for help): d Selected partition 1 Command (m for help): p Disk /dev/sdd: 3221 MB, 3221225472 bytes 255 heads, 63 sectors/track, 391 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes    Device Boot      Start         End      Blocks   Id  System --新建分区 Command (m for help): n Command action    e   extended    p   primary partition (1-4) Partition number (1-4): 1 First cylinder (1-391, default 1):  Using default value 1 Last cylinder or +size or +sizeM or +sizeK (1-391, default 391): +50M Command (m for help): p Disk /dev/sdd: 3221 MB, 3221225472 bytes 255 heads, 63 sectors/track, 391 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes    Device Boot      Start         End      Blocks   Id  System /dev/sdd1               1           7       56196   83  Linux Command (m for help): n Command action    e   extended    p   primary partition (1-4) Partition number (1-4): 2 First cylinder (8-391, default 8):  Using default value 8 Last cylinder or +size or +sizeM or +sizeK (8-391, default 391): +2^H Command (m for help): p Disk /dev/sdd: 3221 MB, 3221225472 bytes 255 heads, 63 sectors/track, 391 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes    Device Boot      Start         End      Blocks   Id  System /dev/sdd1               1           7       56196   83  Linux /dev/sdd2               8          10       24097+  83  Linux Command (m for help): p Disk /dev/sdd: 3221 MB, 3221225472 bytes 255 heads, 63 sectors/track, 391 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes    Device Boot      Start         End      Blocks   Id  System /dev/sdd1               1           7       56196   83  Linux /dev/sdd2               8          10       24097+  83  Linux Command (m for help): n Command action    e   extended    p   primary partition (1-4) Partition number (1-4): 3 First cylinder (11-391, default 11):  Using default value 11 Last cylinder or +size or +sizeM or +sizeK (11-391, default 391):  Using default value 391 Command (m for help): p Disk /dev/sdd: 3221 MB, 3221225472 bytes 255 heads, 63 sectors/track, 391 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes    Device Boot      Start         End      Blocks   Id  System /dev/sdd1               1           7       56196   83  Linux /dev/sdd2               8          10       24097+  83  Linux /dev/sdd3              11         391     3060382+  83  Linux --删除第三个分区 Command (m for help): d Partition number (1-4): 3 Command (m for help): p Disk /dev/sdd: 3221 MB, 3221225472 bytes 255 heads, 63 sectors/track, 391 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes    Device Boot      Start         End      Blocks   Id  System /dev/sdd1               1           7       56196   83  Linux /dev/sdd2               8          10       24097+  83  Linux --删除第二个分区 Command (m for help): d Partition number (1-4): 2  Command (m for help):m Command action    a   toggle a bootable flag    b   edit bsd disklabel    c   toggle the dos compatibility flag    d   delete a partition  删除一个分区    l   list known partition types    m   print this menu    n   add a new partition 新增一个分区    o   create a new empty DOS partition table    p   print the partition table    q   quit without saving changes 不保存，离开    s   create a new empty Sun disklabel     t   change a partitions system id    u   change display/entry units    v   verify the partition table    w   write table to disk and exit 写入并保存    x   extra functionality (experts only) Command (m for help): d Selected partition 1  --只有一个分区，系统帮我们选择 Command (m for help): p Disk /dev/sdd: 3221 MB, 3221225472 bytes 255 heads, 63 sectors/track, 391 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes    Device Boot      Start         End      Blocks   Id  System Command (m for help): q [root@localhost /]#