Once selected, the system goes into single user and you’ll be prompted for the root password before entry into single user is allowed.An informational message screen is then presented, before the diagnostic menu.Boot the LPAR into SMS, select your normal boot disk to boot off, but instead of booting into Normal mode, select Service boot mode.Going Single Userīooting into single user is pretty simple. This means no network services will be started so you can investigate the network-related issues. He only needed to boot AIX into single user mode. The administrator wanted to find his AIX diagnostic DVD to boot off from, but I stopped him. (To see what file systems are exported, use the command: showmount –e.) Even though the NFS server was up and exporting the correct file systems. My first step was to disable the NFS startup, which seemed a probable solution to the issue. He replied it had been like that for more than 30 minutes! Even hitting on the keyboard didn’t cancel the NFS mount process. I told him to wait for another five minutes before I came along and investigated the issue. He said the reboot process was hanging during the NFS startup, trying to contact the NFS server to mount the remote file systems. A few weeks ago, I got called to review an issue where an AIX admin was cloning an AIX image onto a new LPAR.
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