AIX之couldn't open console的解决办法
现象：
P615用串口装AIX5300-06，装完之后，打开xmanager能登陆，关机―拔掉串口控制台―连上显示器、鼠标、键盘―起机，呵呵，始终不出现登陆界面！通过xmanager（幸亏我在拔串口前配了IP），出现“couldn't open console”，也不出现登陆界面！Telnet能登陆！发现不能打开图形界面的原因是，机器没有加载/etc/rc.dt文件！telnent登录上去，手动运行rc.dt 文件后就可以打开图形界面了。后来我发现不光是rc.dt文件没有加载，/etc/inittab里边的也有没有加载的！
结论：
是/etc/inittab文件出问题了！
解决办法：
不能起图形的/etc/inittab文件
# lsitab –a
init:2:initdefault:
brc::sysinit:/sbin/rc.boot 3 >/dev/console 2>&1 # Phase 3 of system boot
powerfail::powerfail:/etc/rc.powerfail 2>&1 | alog -tboot > /dev/console # Power Failure Detection
mkatmpvc:2:once:/usr/sbin/mkatmpvc >/dev/console 2>&1
atmsvcd:2:once:/usr/sbin/atmsvcd >/dev/console 2>&1
load64bit:2:wait:/etc/methods/cfg64 >/dev/console 2>&1 # Enable 64-bit execs
tunables:23456789:wait:/usr/sbin/tunrestore -R > /dev/console 2>&1 # Set tunables
rc:23456789:wait:/etc/rc 2>&1 | alog -tboot > /dev/console # Multi-User checks
fbcheck:23456789:wait:/usr/sbin/fbcheck 2>&1 | alog -tboot > /dev/console # run /etc/firstboot
srcmstr:23456789:respawn:/usr/sbin/srcmstr # System Resource Controller
rctcpip:23456789:wait:/etc/rc.tcpip > /dev/console 2>&1 # Start TCP/IP daemons
sniinst:2:wait:/var/adm/sni/sniprei > /dev/console 2>&1
rcnfs:23456789:wait:/etc/rc.nfs > /dev/console 2>&1 # Start NFS Daemons
cron:23456789:respawn:/usr/sbin/cron
piobe:2:wait:/usr/lib/lpd/pioinit_cp >/dev/null 2>&1 # pb cleanup
install_assist:2:wait:/usr/sbin/install_assist </dev/console >/dev/console 2>&1
qdaemon:23456789:wait:/usr/bin/startsrc -sqdaemon
writesrv:23456789:wait:/usr/bin/startsrc -swritesrv
uprintfd:23456789:respawn:/usr/sbin/uprintfd
shdaemon:2:off:/usr/sbin/shdaemon >/dev/console 2>&1 # High availability daemon
l2:2:wait:/etc/rc.d/rc 2
l3:3:wait:/etc/rc.d/rc 3
l4:4:wait:/etc/rc.d/rc 4
l5:5:wait:/etc/rc.d/rc 5
l6:6:wait:/etc/rc.d/rc 6
l7:7:wait:/etc/rc.d/rc 7
l8:8:wait:/etc/rc.d/rc 8
l9:9:wait:/etc/rc.d/rc 9
naudio::boot:/usr/sbin/naudio > /dev/null
ntbl_reset:2:once:/usr/bin/ntbl_reset_datafiles
rcml:2:once:/usr/sni/aix53/rc.ml > /dev/console 2>&1
logsymp:2:once:/usr/lib/ras/logsymptom # for system dumps
perfstat:2:once:/usr/lib/perf/libperfstat_updt_dictionary >/dev/console 2>&1
diagd:2:once:/usr/lpp/diagnostics/bin/diagd >/dev/console 2>&1
xmdaily:2:once:/usr/bin/xmwlm -L 2>&1 >/dev/null # Start xmwlm daily recording
ctrmc:2:once:/usr/bin/startsrc -s ctrmc > /dev/console 2>&1
ha_star:h2:once:/etc/rc.ha_star >/dev/console 2>&1
lft0:2:respawn:/usr/sbin/getty /dev/lft0
dt:2:wait:/etc/rc.dt
cons:0123456789:respawn:/usr/sbin/getty /dev/console
说明：
2行用红色标识注释掉就可以解决！
install_assist:2:wait:/usr/sbin/install_assist </dev/console >/dev/console 2>&1 一直在等着退出
去掉上面这一行就可以正常启动rc.dt了！