[muglo] Re: Burning CD's

  • From: Theresa Roth <theresaroth@xxxxxxxxxxxx>
  • To: MUGLO <muglo@xxxxxxxxxxxxx>
  • Date: Sun, 09 Jul 2006 10:57:36 -0400

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
> 
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