Appendix D: Loading System Software
DAS System User Manual
D–11
When the file system Check procedure finds an inconsistency in the file system, it
prompts you to take corrective action. There are several approaches to correcting file
system problems, depending on the situation. Usually, answering
y
to a CLEAR?
prompt or n to a RECONNECT? prompt corrects the problem without damaging
any files on the hard disk. If a file has a size of 0, it can always be cleared. After
clearing any files, you should run the Verify option of the Install utility to make sure
that no system files were deleted. If the message EXCESSIVE BAD BLOCKS.
CONTINUE? appears, you should enter y to continue. (A file system bad block is
not the same as a bad block on the hard disk.)
NOTE
. If you receive the Excessive Bad Blocks message, you must repeat the file
system Check procedure until you get through it with no errors reported.
All problems may not be fixed on the first pass through the file system Check
procedure; you may have to rerun the procedure several times. If all checks are
successfully completed, the number of files, blocks, and the amount of free space
are printed, and the following prompt is displayed:
Do you want to rerun the File System Check Procedure
(y/n)[n]:
Enter y to the prompt only if all checks did not complete successfully. If you
enter n, the BOOT?> prompt is displayed.
Phase 1: Check Blocks and Sizes.
This phase checks the inode section of the file
system; errors uncovered here usually indicate serious corruption of the file
system. Table D–1 summarizes the error messages that can be generated during
Phase 1 testing. In the table, a word in parentheses following an error message
indicates the actual prompt message that appears on the screen.
Table D–1: Phase 1 File System Check Error Messages
Message
Explanation
UNKNOWN FILE TYPE I=I (CLEAR?)
This message indicates that the procedure found an unknown type of file. Type y in
response to this message.
LINK COUNT TABLE OVERFLOW (CON-
TINUE?)
An internal error has been found. Repeat the steps for the file system Check
procedure after completing the current pass. Type y in response to this message. May
require several y responses.
B BAD I=I
The procedure detected an illegal block number B in inode I.
EXCESSIVE BAD BLOCKS I=I (CONTINUE?)
The procedure detected 10 or more bad block numbers. Type y in response to this
message. Run the file system Check procedure again after completion.
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