>When a file is deleted, its directory entry is changed to indicate that
>the file no longer exists, If a shorter file is then stored on the disk,
>then the directory entry is changed again for the new file. THis then
>leaves some unused blocks on the disk which can't be used becuase there's
>no way to create a directory entry in the right place in the directory.
RT handles this by adding a directory entry to describe the unallocated
portion of the previous free space. This might mean having to move
directory entries in a segment, and may require a segment split.
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | email: mbg at world.std.com |
| Member of Technical Staff | megan at savaje.com |
| SavaJe Technologies, Inc. | (s/ at /_at_/) |
| 100 Apollo Drive | URL:
http://world.std.com/~mbg/ |
| Chelmsford, MA 01460 | "pdp-11 programmer - some assembler |
| (978) 256 6521 (DEC '77-'98) | required." - mbg KB1FCA |
+--------------------------------+-------------------------------------+
Received on Sun Jul 27 2003 - 16:15:01 BST