You may face the following error on many Operation System not only on AIX :

superblock is invalid : -5

this error means that you apply function of File system type on another type, in another meaning,

if you have file system “/TestFs” with type “jfs” and you run some commands which works with “jfs2” or “NFS” you will face the previous error.

so while you see this error , try to check your File System Type.

Wednesday, June 26th, 20132:47 pmThis entry was posted on at and is filed under AIX. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.