max.wanadoo at gmail.com
max.wanadoo at gmail.com
Thu Dec 6 11:22:12 CST 2007
Yes that is probably it. Thanks Max -----Original Message----- From: accessd-bounces at databaseadvisors.com [mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Heenan, Lambert Sent: Thursday, December 06, 2007 3:40 PM To: 'Access Developers discussion and problem solving' Subject: Re: [AccessD] CD/DVD R/W Max, You seem to be mixing up RW disks with multi-session R disks (DVD or CD). With a regular CD or DVD you can write data to it and then close the disk. Which means that no more data can ever be written to it. Or you can make the burner SW close the session but leave the disk open to allow more data to be written to it later. In the latter case, if you write a file to the disk in a subsequent session, and the file path is the same as a file already recorded on the disk in a prior session, then that's when the older data gets "hidden" and no longer accessible. This will also result in the apparent capacity of the disk reducing: burn a new version of a 100 Mb file onto the disk and that will leave you with a 100 Mb of inaccessible data on the disk. HTH Lambert -----Original Message----- From: accessd-bounces at databaseadvisors.com [mailto:accessd-bounces at databaseadvisors.com] On Behalf Of max.wanadoo at gmail.com Sent: Thursday, December 06, 2007 1:01 AM To: 'Access Developers discussion and problem solving' Subject: Re: [AccessD] CD/DVD R/W John, this may be old information as I have'nt used RW for some years now, but when I did use them then what it does was do "Hide" any erased data but it could not remove it. In effect this means that your AVAILABLE CD space gradually diminished. Ie, start off with 650Mb. Save a 50Mb file, then Delete it, then space available on the now blank CD was 600Mb. As I say, this may not be the case these days, but worth checking. Max -----Original Message----- From: accessd-bounces at databaseadvisors.com [mailto:accessd-bounces at databaseadvisors.com] On Behalf Of jwcolby Sent: Thursday, December 06, 2007 3:15 AM To: 'Access Developers discussion and problem solving' Subject: [AccessD] CD/DVD R/W Yep, that's what it means. They are rewritable. John W. Colby Colby Consulting www.ColbyConsulting.com -----Original Message----- From: accessd-bounces at databaseadvisors.com [mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Arthur Fuller Sent: Wednesday, December 05, 2007 8:23 PM To: Access Developers discussion and problem solving Subject: Re: [AccessD] BartPE So does that mean that given my experiment, I could entirely fill an R/W DVD then erase it all and fill it with something else, just like a hard disk or (remember when) floppy? If so, then I'd better invest in a dozen or so R/Ws, and fast! Arthur On 12/5/07, jwcolby <jwcolby at colbyconsulting.com> wrote: > > It is a different chemistry at the write layer. > -- AccessD mailing list AccessD at databaseadvisors.com http://databaseadvisors.com/mailman/listinfo/accessd Website: http://www.databaseadvisors.com -- AccessD mailing list AccessD at databaseadvisors.com http://databaseadvisors.com/mailman/listinfo/accessd Website: http://www.databaseadvisors.com -- AccessD mailing list AccessD at databaseadvisors.com http://databaseadvisors.com/mailman/listinfo/accessd Website: http://www.databaseadvisors.com -- AccessD mailing list AccessD at databaseadvisors.com http://databaseadvisors.com/mailman/listinfo/accessd Website: http://www.databaseadvisors.com