容量大于4T的硬盘(raid)安装CentOS始终是失败的,就算把硬盘转成GPT分区,再安装系统,系统是安装上了,但是启动不了。在安装的前一步还提示:you are using a gpt bootdisk on a non-EFI system。
CentOS6.2貌似支持了EFI了,iso镜像里面都有EFI文件夹,但是目前不知道如何启动EFI安装模式,有可能是主板自带的raid不支持?稍后用一块盘转GPT安装CentOS试试看。目前先转变思路,用一块盘安装系统,然后挂载raid大容量空间。
安装CentOS系统很简单,就不复述,主要是讲用parted进行大容量分区相关知识。
1、用fdisk -l
查看分区情况,下面是我已经分区过的了
WARNING: GPT (GUID Partition Table) detected on ‘/dev/md126’! The util fdisk doesn’t support GPT. Use GNU Parted.
Disk /dev/md126: 3000.6 GB, 3000607178752 bytes
255 heads, 63 sectors/track, 364803 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 196608 bytes
Disk identifier: 0x00000000Device Boot Start End Blocks Id System
/dev/md126p1 1 267350 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.
2、parted命令进入分区界面
[root@localhost ~]#
parted /dev/md126
GNU Parted 2.1
使用 /dev/md126
Welcome to GNU Parted! Type ‘help’ to view a list of commands.
(parted)
输入help,查看parted命令帮助,主要帮助内容如下
(parted) help
align-check TYPE N check partition N for TYPE(min|opt)
alignment
check NUMBER do a simple check on the file system
cp [FROM-DEVICE] FROM-NUMBER TO-NUMBER copy file system to another partition
help [COMMAND] print general help, or help on
COMMAND
mklabel,mktable LABEL-TYPE create a new disklabel (partition
table)
mkfs NUMBER FS-TYPE make a FS-TYPE file system on
partition NUMBER
mkpart PART-TYPE [FS-TYPE] START END make a partition
mkpartfs PART-TYPE FS-TYPE START END make a partition with a file system
move NUMBER START END move partition NUMBER
name NUMBER NAME name partition NUMBER as NAME
print [devices|free|list,all|NUMBER] display the partition table,
available devices, free space, all found partitions, or a particular
partition
quit exit program
rescue START END rescue a lost partition near START
and END
resize NUMBER START END resize partition NUMBER and its file
system
rm NUMBER delete partition NUMBER
select DEVICE choose the device to edit
set NUMBER FLAG STATE change the FLAG on partition NUMBER
toggle [NUMBER [FLAG]] toggle the state of FLAG on partition
NUMBER
unit UNIT set the default unit to UNIT
version display the version number and
copyright information of GNU Parted
上面分区要用到的命令如下:
print #查看分区情况
mklabel gpt #转成gpt分区,已经转过了
mkpart #创建一个新的分区,输入大小单位是MB(start 0 end -1表示使用整个磁盘分区)
quit #退出
(parted) print
Model: 未知 (unknown)
Disk /dev/md126: 3001GB
Sector size (logical/physical): 512B/512B
Partition Table: gptNumber Start End Size File system Name 标志
1 197kB 3000GB 3000GB ext4 date
3、创建文件系统并挂载分区,写入fstab
mkfs.ext4 /dev/md126p1
mkdir /data
mount –t /dev/md126p1 /data
vim /etc/fstab
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