服务器
dell sc440

操作系统：
redhat linux 5.2

运行的数据库停机，用fdisk查看：
[root@tonykorn97 ~]# fdisk -l
Warning: ignoring extra data in partition table 8
Warning: invalid flag 0x3832 of partition table 8 will be corrected by w(rite)

Disk /dev/sda: 160.0 GB, 160000000000 bytes
255 heads, 63 sectors/track, 19452 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 * 1 10 80293+ de Dell Utility
/dev/sda2 11 272 2104515 c W95 FAT32 (LBA)
/dev/sda3 273 285 104422+ 83 Linux
/dev/sda4 286 19452 153958927+ 5 Extended
/dev/sda5 286 4201 31455238+ 8e Linux LVM
/dev/sda6 4202 4462 2096451 82 Linux swap / Solaris
/dev/sda7 * 4463 4478 128488+ 83 Linux
/dev/sda8 ? 55325 55326 6936 39 Plan 9
[root@tonykorn97 ~]#

运行其他命令也有问题，关闭服务器重启，重启的时候提示：
Memory for crash kernel (0x0 to 0x0) notwithin permissible range
Acpi:Getting cpuindex for acpiid 0x3
Acpi:Getting cpuindex for acpiid 0x4
invalid compressed format (err=2)
kernel panic - not syncing:vfs:unable to mount root fs on unknow-block (0,0)

估计原因应该是硬盘坏掉了！

1，重启服务器，用ctrl+alt+d 检测硬盘，检测后重新启动系统
invalid compressed format (err=2)
变为
invalid compressed format (err=1)

2，用redhat5.2光盘进入恢复模式，用fdisk -l查看没有分区

3，重新更换一块硬盘安装操作系统，死机。出现类似情况：
ata1.00: status: { DRDY }
ata1: port is slow to respond, please be patient (Status 0xd0)
ata1: device not ready (errno=-16), forcing hardreset
ata1: soft resetting link
ata1.00: configured for UDMA/25
ata1: EH complete
ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata1.00: cmd a0/01:00:00:80:00/00:00:00:00:00/a0 tag 0 dma 128 in
cdb 5a 00 2a 00 00 00 00 00 80 00 00 00 00 00 00 00
res 40/00:03:00:00:00/00:00:00:00:00/a0 Emask 0x4 (timeout)
ata1.00: status: { DRDY }
ata1: port is slow to respond, please be patient (Status 0xd0)
ata1: device not ready (errno=-16), forcing hardreset
ata1: soft resetting link
ata1.00: configured for UDMA/133
ata1: EH complete
ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata1.00: cmd a0/01:00:00:80:00/00:00:00:00:00/a0 tag 0 dma 128 in
cdb 5a 00 2a 00 00 00 00 00 80 00 00 00 00 00 00 00
res 40/00:03:00:00:00/00:00:00:00:00/a0 Emask 0x4 (timeout)
ata1.00: status: { DRDY }

停止不动过一会会出现：
sr 1:0:0:0: SCSI error; return code : 0x00040000
end_request: I/O error,dev sr0, sector 278400

4, 用dell的引导盘安装系统可以。