# 4779 Altering a Table to Make a Table Read-Only Results in Corruption Error

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Trying to switch a table from read-write to read-only using EDBManager's built in dialogs results in an error

[Window Title]
Error

[Content]
The following error occurred with the execution of the SQL for the last operation:

ElevateDB Error #601 The table fred is corrupt (Error flushing header to disk)

Would you like to copy the SQL to a new SQL editor window so that you can correct the problem and attempt to execute the SQL again ?

[Yes] [No]


The same happens if you try and use the generated sql

ALTER TABLE "fred"
READONLY

ElevateDB Error #601 The table fred is corrupt (Error flushing header to disk)