there can be a difference between booting single user from CD-ROM or from harddisk.

But, I suppose that all the people know that, (FS / in NVRAM,
the only FS with write permissions is TMP, and so on).

When Merlin says:

"... single user mode from the CD ..." (i.e: boot cdrom -s )

or when I explain with more detaills the proccess that Merlin has
proposed, all are talking the same.

When you boot from cdrom with the flag -s, is not
necessary to interrupt the installation proccess; because
the -s flag avoids the installation.

------------------------------------------------------------------------
nikk:

If the server is an Enterprise E 420R you need to use
the CD :
"Operating Environment Installation CD P.N: 704-7076-10"
Don't use the CD:
"Solaris 2.6 Software"
or you will need to change the environment to do this.

-------------------------------------------------------------------------
janr:

Please, be carefull when you use non standard procedures.

------------------------------------------------------------------------

Regards. Hugo.

The system is Ultra SparcII ,anyway i did booting from CD in single user mode & it worked, thanks everyone Spc. Hugo.
Rgrds,
Nikk