实例解说Linux中fdisk分区使用方法(4)
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2006-01-04 16:52:17
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4、通过fdisk的n指令增加一个分区
Command (m for help): p Disk /dev/sda: 1035 MB, 1035730944 bytes 256 heads, 63 sectors/track, 125 cylinders Units = cylinders of 16128 * 512 = 8257536 bytes Device Boot Start End Blocks Id System /dev/sda1 1 25 201568+ c W95 FAT32 (LBA) /dev/sda2 26 125 806400 5 Extended /dev/sda5 26 50 201568+ 83 Linux Command (m for help): n 注:增加一个分区; Command action l logical (5 or over) 注:增加逻辑分区,分区编号要大于5;为什么要大于5,因为已经有sda5了; p primary partition (1-4) 注:增加一个主分区;编号从 1-4 ;但sda1 和sda2都被占用,所以只能从3开始; p Partition number (1-4): 3 No free sectors available 注:失败中,为什么失败?
注:我试图增加一个主分区,看来是失败了,为什么失败?因为我们看到主分区+扩展分区把整个磁盘都用光了,看扩展分区的End的值,再看一下 p输出信息中有125 cylinders;最好还是看前面部份;那里有提到;
所以我们只能增加逻辑分区了
Command (m for help): n Command action l logical (5 or over) p primary partition (1-4) l 注:在这里输入l,就进入划分逻辑分区阶段了; First cylinder (51-125, default 51): 注:这个就是分区的Start 值;这里最好直接按回车,如果您输入了一个非默认的数字,会造成空间浪费; Using default value 51 Last cylinder or +size or +sizeM or +sizeK (51-125, default 125): +200M 注:这个是定义分区大小的,+200M 就是大小为200M ;当然您也可以根据p提示的单位cylinder的大小来算,然后来指定 End的数值。回头看看是怎么算的;还是用+200M这个办法来添加,这样能直观一点。如果您想添加一个10G左右大小的分区,请输入 +10000M ; Command (m for help):
5、通过fdisk的t指令指定分区类型
Command (m for help): t 注:通过t来指定分区类型; Partition number (1-6): 6 注:要改变哪个分区类型呢?我指定了6,其实也就是sda6 Hex code (type L to list codes):L 注:在这里输入L,就可以查看分区类型的id了; Hex code (type L to list codes): b 注:如果我想让这个分区是 W95 FAT32 类型的,通过L查看得知 b是表示的是,所以输入了b; Changed system type of partition 6 to b (W95 FAT32) 注:系统信息,改变成功;是否是改变了,请用p查看; Command (m for help): p Disk /dev/sda: 1035 MB, 1035730944 bytes 256 heads, 63 sectors/track, 125 cylinders Units = cylinders of 16128 * 512 = 8257536 bytes Device Boot Start End Blocks Id System /dev/sda1 1 25 201568+ c W95 FAT32 (LBA) /dev/sda2 26 125 806400 5 Extended /dev/sda5 26 50 201568+ 83 Linux /dev/sda6 51 75 201568+ b W95 FAT32
6、fdisk 的退出,用q或者 w
其中 q是 不保存退出,w是保存退出
Command (m for help): w 或 Command (m for help): q
7、一个添加分区的例子;
本例中我们会添加两个200M的主分区,其它为扩展分区,在扩展分区中我们添加两个200M大小的逻辑分区
Command (m for help): p 注:列出分区表; Disk /dev/sda: 1035 MB, 1035730944 bytes 256 heads, 63 sectors/track, 125 cylinders Units = cylinders of 16128 * 512 = 8257536 bytes Device Boot Start End Blocks Id System Command (m for help): n 注:添加分区; Command action e extended p primary partition (1-4) p 注:添加主分区; Partition number (1-4): 1 注:添加主分区1; First cylinder (1-125, default 1): 注:直接回车,主分区1的起始位置;默认为1,默认就好; Using default value 1 Last cylinder or +size or +sizeM or +sizeK (1-125, default 125): +200M 注:指定分区大小,用+200M来指定大小为200M Command (m for help): n 注:添加新分区; Command action e extended p primary partition (1-4) p 注:添加主分区 Partition number (1-4): 2 注:添加主分区2; First cylinder (26-125, default 26): Using default value 26 Last cylinder or +size or +sizeM or +sizeK (26-125, default 125): +200M 注:指定分区大小,用+200M来指定大小为200M Command (m for help): n Command action e extended p primary partition (1-4) e 注:添加扩展分区; Partition number (1-4): 3 注:指定为3 ,因为主分区已经分了两个了,这个也算主分区,从3开始; First cylinder (51-125, default 51): 注:直接回车; Using default value 51 Last cylinder or +size or +sizeM or +sizeK (51-125, default 125): 注:直接回车,把其余的所有空间都给扩展分区; Using default value 125 Command (m for help): p Disk /dev/sda: 1035 MB, 1035730944 bytes 256 heads, 63 sectors/track, 125 cylinders Units = cylinders of 16128 * 512 = 8257536 bytes Device Boot Start End Blocks Id System /dev/sda1 1 25 201568+ 83 Linux /dev/sda2 26 50 201600 83 Linux /dev/sda3 51 125 604800 5 Extended Command (m for help): n Command action l logical (5 or over) p primary partition (1-4) l 注:添加逻辑分区; First cylinder (51-125, default 51): Using default value 51 Last cylinder or +size or +sizeM or +sizeK (51-125, default 125): +200M 注:添加一个大小为200M大小的分区; Command (m for help): n Command action l logical (5 or over) p primary partition (1-4) l 注:添加一个逻辑分区; First cylinder (76-125, default 76): Using default value 76 Last cylinder or +size or +sizeM or +sizeK (76-125, default 125): +200M 注:添加一个大小为200M大小的分区; Command (m for help): p 列出分区表; Disk /dev/sda: 1035 MB, 1035730944 bytes 256 heads, 63 sectors/track, 125 cylinders Units = cylinders of 16128 * 512 = 8257536 bytes Device Boot Start End Blocks Id System /dev/sda1 1 25 201568+ 83 Linux /dev/sda2 26 50 201600 83 Linux /dev/sda3 51 125 604800 5 Extended /dev/sda5 51 75 201568+ 83 Linux /dev/sda6 76 100 201568+ 83 Linux
然后我们根据前面所说通过t指令来改变分区类型;
最后不要忘记w保存退出
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