Problems with read-only files from CD-ROM (OpenInsight 32-bit Specific)
At 07 OCT 2002 09:52:53AM Oystein Reigem wrote:
Sometimes clients move tables between systems on writable CD-ROM. Sometimes they restore tables from backup on same. Etc. But often files transferred via CD-R end up on the user's target disk as read-only files. Not everybody are sufficiently aware they have to reset the read-only attribute. And read-only files can cause all sorts of problems, and the cause isn't always obvious from the symptoms.
Am I the only one who's felt the problem?
It seems the file handling of OI and Basic+ does not understand read-only files. Am I right? It would be very nice indeed if the file handling could be improved to recognize read-only files.
- Oystein -
At 07 OCT 2002 10:31AM Don Miller - C3 Inc. wrote:
I've experienced this too .. all the way back to AREV days (pre 3.12, even). The problem is in the fact that the standard OPEN logic in DOS / Windows doesn't care about read-only. It only becomes an issue when you try to write (typically REVMEDIA or REVLOCKS) if these are read-only. A while ago, I wrote a little .BAT file that allowed for copy and ATTRIB -R command. I included this with early upgrade strategy. In OI, I use an Install program that removes the Read Only attribute during installation.
I'm not sure there's any thing slick that OI can do about it, but maybe someone smarter than I can suggest something.
Don M.
At 07 OCT 2002 10:37AM [url=http://www.sprezzatura.com]The Sprezzatura Group[/url] wrote:
If you're using the All Networks Driver you could use the Readonly=True flag in REVPARAM.
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At 07 OCT 2002 04:41PM Mark Glicksman wrote:
I like to use the command line version of PKZip to automatically create a zip backup that can be put on a CD. You can write a simple batch file to automatically create the zip and then launch the CD creator. Since the zip file maintains the original read-write atttributes - no problems.
glicks@compuserve.com
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At 07 OCT 2002 06:35PM Oystein Reigem wrote:
Thanks for all the replies. Not all of them apply to the case I asked about (the client by accident makes the app's data volume read-only) but the advice may still come in handy.
Don - your description of open and write made me think clearer. I went back and did some experiments. I found that some of my earlier conclusions may have been wrong. I've got to look further into the matter.
- Oystein -