can no enter rescue mode entirely
 

hi all:
yesterday i have posted a thread"upgrade glibc destroy my box".then when i try to fix it again today.i got the message

Your system is mounted under the /mnt/sysimage directory
When finished please exit from the shell and your system will reboot

Traceback (most recent call last)
File" /usr/bin/anaconda",line 317 ,in?
rescue.runRescue (rootPath,not rescue_nomount,id)
File "/usr/lib/anaconda/rescue.py".line 344,in runRescue makeMtab(instPath,fs)
File"/usr/lib/anaconda/rescue.py",line 64,in makeMtabf.close()

IOError: [Errno 22] invalid argument

my question is
1 what happen whit above message.hopeless or hopeful to rescue my system.
2 i want to upgrade my rhl 9.0 with rhl serven(beta).can i boot my system.(disaster caused by i upgrade glibc stock,then can not boot)