[Info-vax] Request description of UFS for VMS person

[Bob Koehler]

In article <00356ca1$0$20450$c3e8da3 at news.astraweb.com>, JF Mezei <jfmezei.spamnot at vaxination.ca> writes:
> 
> Does this mean that "undelete" is not possible on Unix file systems
> because its logical equivalent to the entry in indexf is actually wiped
> out ?
> 
> With VMS and DOS, it was possible to undelete files because entries were
> just flagged as available and remained until used by another file.


   There's no difference.  On any file system you need the file header
   (aka inode) and data content to still be available.  If they are,
   then it is possible to undelete the file.  If any of those blocks
   have actually been reused then it is not possible to undelete the
   file.  It is not necessary for the data stored in indexf or its
   equivalent to be available if you have some means of finding the
   header (but it is easier to find the header).