Linux扩容时新建分区报错No free sectors available
扩展后执行fdisk -l查看是否成功
Disk/dev/sda:16.1GB,16106127360bytes
255heads,63sectors/track,1958cylinders
Units=cylindersof16065*512=8225280bytes
DeviceBootStartEndBlocksIdSystem
/dev/sda1*1648163+83Linux
/dev/sda275154088542+83Linux
/dev/sda35161239581553083Linux
/dev/sda4124013055301455Extended
/dev/sda512401305530113+82Linuxswap/Solaris
可见sda已经扩展成为16G，但是没分配给文件系统
继续执行fdisk /dev/sda进行新建磁盘Thenumberofcylindersforthisdiskissetto1958.
Thereisnothingwrongwiththat,butthisislargerthan1024,
andcouldincertainsetupscauseproblemswith:
1)softwarethatrunsatboottime(e.g.,oldversionsofLILO)
2)bootingandpartitioningsoftwarefromotherOSs
(e.g.,DOSFDISK,OS/2FDISK)
Command(mforhelp):n
Nofreesectorsavailable
前面执行fdisk-l的时候明明最后才是1305柱面，而且应该有1958柱面，为什么说没有空闲的扇区。
再看看fdisk-l执行结果，原来是/dev/sda5分配了作为swap分区，找到原因了就容易解决。
1.关闭swap分区#swapoff/dev/sda5
2.删除sda4和sda5.
Thenumberofcylindersforthisdiskissetto1958.
Thereisnothingwrongwiththat,butthisislargerthan1024,
andcouldincertainsetupscauseproblemswith:
1)softwarethatrunsatboottime(e.g.,oldversionsofLILO)
2)bootingandpartitioningsoftwarefromotherOSs
(e.g.,DOSFDISK,OS/2FDISK)
Command(mforhelp):d
Partitionnumber(1-5):5
Command(mforhelp):d
Partitionnumber(1-5):4
3.建立扩展分区4，建立分区sda5，写入
Commandaction
eextended
pprimarypartition(1-4)
e
Selectedpartition4
Firstcylinder(1240-1958,default1240):
Usingdefaultvalue1240
Lastcylinderor+sizeor+sizeMor+sizeK(1240-1958,default1958):
Usingdefaultvalue1958
Command(mforhelp):n
Firstcylinder(1240-1958,default1240):
Usingdefaultvalue1240
Lastcylinderor+sizeor+sizeMor+sizeK(1240-1958,default1958):
Usingdefaultvalue1958
Command(mforhelp):w
Thepartitiontablehasbeenaltered!
其他扩容继续参照网上的教程。