Theresa writes: Thanks. I¹ll save this email as I will attempt to burn my CD in the next few days. I found your instructions informative and detailed so not overkill!! > > On 9-Jul-06, at 9:56 AM, Theresa Roth wrote: > >> > I=92d like to burn some CD=92s and have a question that needs=20 >> > clarification. >> > Does the operation have to done all at once or can I burn several = > items >> > today onto one CD and go back and add some more at a later time? >> > >> > Apparently when the Photolab burns photos onto a CD it all has to be=20= > >> > done at >> > once as they cannot add pics at a later time. This made me wonder=20 >> > whether >> > the same thing applies to .jpg=92s and .gif=92s. >> > > > There are a number of different ways to burn CD's. Each time you burn=20= > > to a CD you end with a 'session'. CD's can have multiple sessions or=20 > you can just burn a single session. A typical CD can hold about 700 Mb=20= > > of 'data' (pits and bumps). Look at a commercial disk to see how much=20 > is used (Highlight the icon and press command (or apple)-I for=20 > information. It will tell you how much was used. I tend to use Toast=20= > > so can't speak specifically about OS X burning. > > With a single session (sometimes called 'write disk') the CD is burned=20= > > such that you can not then add other data to the CD as it is 'filled'. =20= > > On a Mac when you insert the CD you get a single icon on the desktop. =20= > > By burning using a 'session' the disk is burned in such a way that you=20= > > can add more sessions upto a total of about 700 Mb. If you burn 3 or 4=20= > > individual sessions on the CD when you insert it you will get an icon=20 > representing each of the burned sessions. > > As an analogy let's say you have a book and you plan to have 6=20 > chapters. You complete Chapters 1,4 and 5 and individually burn each=20 > chapter to a CD in one session named "The Great Canadian Novel'. You=20 > then finish Chapter 2 & 3. You can not add (or burn) chapters 2 & 3 to=20= > > the chapters 1, 4 and 5 session but must burn a separate session for=20 > chapter 2 and 3 named e.g. TGCN Chp2 and 3". Similarly, chapter 6 the=20= > > startling conclusion, must also be burned separately in another session=20= > > - TGCN Chp 6. Now when you insert this disk into the drive 3 icons=20 > will show up on the desktop. > > It does not matter what kind of files are being added .doc, .xls,=20 > .jpeg, mp3, m4a, wma, pdf, cwk and so on. To the CD it is all pits=20 > and bumps burned as requested into either a single full disk session or=20= > > multiple smaller sessions. > > I use multiple sessions as a way of backing up files that have changed.=20= > > Using the Finder I use search critieria to find the files I need to=20 > back-up and then burn that session to CD. E.g. I still use Appleworks=20= > > so I tell the finder to find all the .cwk files that have changed since=20= > > July 1, 2006. I burn these to a CD as CWB-up07092006, the date I did=20 > my backup. In a week I repeat the process but find files that have=20 > changed from July 8 (just in case I changed some of the files on July=20 > 9), I name it CWB-up07162006. When I put this disk in on July 23 I=20 > would have 2 icons pop up representing my 2 previous b-up sessions. > > Is this response overkill? > > Martin > > _________________________________________________ > > For information concerning the MUGLO List just click on > > http://www.freewebs.com/muglo/joinus.html > > Our Archives can be viewed at > > //www.freelists.org/archives/muglo > > Don't forget to periodically check our web site at: > > http://www.freewebs.com/muglo/ _________________________________________________ For information concerning the MUGLO List just click on http://www.freewebs.com/muglo/joinus.html Our Archives can be viewed at //www.freelists.org/archives/muglo Don't forget to periodically check our web site at: http://www.freewebs.com/muglo/