Subject Re: Missing MDX File From Mervyn Bick <invalid@invalid.invalid> Date Mon, 20 Mar 2017 16:16:28 +0200 Newsgroups dbase.getting-started On 2017-03-20 3:51 PM, Ken Mayer wrote: > On 3/20/2017 6:42 AM, Euan Baxter wrote: >> I have a DBase IV database file and I'm trying to open it using DBDOS >> Pro 5+N. Every time I select the file to open I get an error saying >> Production .MDX file not found: APPLICAT.mdx with Applicat being the >> name of the dbf file. I know in later versions of DBase you can detach >> the index file, but I don't know if you can do it in DBase IV. Does >> anyone know if it can be done and if so how or is there anyway to get >> round this problem. The database is ancient, but we have a lot of >> useful information stored in it but we're just unable to access it. > > Do you have a current version of dBASE? If so, you can work with the > dBASE IV table. It takes a little work, but not a lot. You would need to > modify a setting in the BDE Administrator so the table is not written > back out as a level 7 table: If you don't have a current version of dBASE you can use a HEX editor (I use XVI32 but there are plenty of others available) to change bit 28 (counting from 0 so the 29th bit) in the table header from 1 to 0. It goes without saying that this should only be done if you have a backup safely tucked away.  :-) Mervy.