Re: Buffer Underrun
Hi Bob Rosalyn, To find out if your optical drive has buffer underrun protection, open Terminal (/Applications/Utilities) and type this command: drutil info (without the quotes). Hit Enter or Return If you see BUFE in the returned results, then your drive has buffer underrun protection. Cheers, Ronni On 18/06/2008, at 1:26 PM, Robert Howells wrote: Rosalyn, Further to Ronni's explanation , later models of CD and DVD burners are equipped to handle a Buffer under run Prevention control . The control needs to be enabled in your Mac software as well . Roxio's Toast software has that facility and it works fine for me. Never lost a disc . Because I use Toast exclusively I cannot tell you whether the Mac Burn function has the same facility . HTH's Bob On 18/06/2008, at 12:08 PM, William Crabb wrote: Thanx heaps Ronni, That's makes a lot of sense, you explain things beautifully. Much appreciated. Rosalyn On 18/06/2008 11:59 AM, Ronda Brown [EMAIL PROTECTED] wrote: On 18/06/2008, at 11:18 AM, William Crabb wrote: Hi All, I'm hoping someone can help me understand this... Occasionally when I attempt to burn a dvd of images, it comes up with the message Buffer Underrun and the burning aborts. I have just tried to burn 2.65GB onto a 4.7GB dvd and it happened. There is about 5GB available on the HD. And then if I go to burn something else it will be fine. There seems to be no reason to it. WHY WHAT DOES IT MEAN? Hello Rosalyn, Buffer Underrun: CD-R/DVD-R drives put information from your hard drive into a buffer (i.e. memory area) before they write (copy) it to the Disc. The idea behind a buffer is to maintain a steady flow of information to the unit. When you burn a CD or DVD, it's done on the fly. The CD-R/DVD-R drive tries to keep its buffer full (or close to it) at all times. As long as there is information in the buffer, the CD-R /DVD-R drive can write to the disc. If the buffer gets emptied out and not refilled (usually due to the computer being busy with something else) the CD-R/DVD-R drive has nothing to write to the Disc that's spinning inside of it. Unfortunately, a CD/DVD has to have information on every section that's written, so you end up with the buffer underrun error and (in most cases) a disc that is useless. To help prevent this problem, don't mess with your computer while it's writing to a Disc, Quit other applications (you may want to disable your screen saver too). Also try burning at a slower speed. Cheers, Ronni -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Unsubscribe - mailto:[EMAIL PROTECTED] -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Unsubscribe - mailto:[EMAIL PROTECTED] -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Unsubscribe - mailto:[EMAIL PROTECTED] -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Unsubscribe - mailto:[EMAIL PROTECTED]
Re: Buffer Underrun
BRILLIANTThankyou , thankyou , thankyou. DVD burnt perfectly that time. All advice greatly appreciated. Til next timeRosalyn Ok ! I think 7 has the Function ! When you click RECORD you are presented with a window ... across it's top are Basic , advanced ...and burner name click on advanced and you sjould find the check box in the upper section on the left See picture below Bob -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Unsubscribe - mailto:[EMAIL PROTECTED]
Buffer Underrun
Hi All, I'm hoping someone can help me understand this... Occasionally when I attempt to burn a dvd of images, it comes up with the message Buffer Underrun and the burning aborts. I have just tried to burn 2.65GB onto a 4.7GB dvd and it happened. There is about 5GB available on the HD. And then if I go to burn something else it will be fine. There seems to be no reason to it. WHY WHAT DOES IT MEAN? Regards, Rosalyn -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Unsubscribe - mailto:[EMAIL PROTECTED]
Re: Buffer Underrun
it usually means there isnt enough space on your selectedscrath Disc to store while it burns the disc. Usually allocating more disc space as a scratch disc will prevent this from happening. On 18/06/2008, at 11:18 AM, William Crabb wrote: Hi All, I'm hoping someone can help me understand this... Occasionally when I attempt to burn a dvd of images, it comes up with the message Buffer Underrun and the burning aborts. I have just tried to burn 2.65GB onto a 4.7GB dvd and it happened. There is about 5GB available on the HD. And then if I go to burn something else it will be fine. There seems to be no reason to it. WHY WHAT DOES IT MEAN? Regards, Rosalyn -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Unsubscribe - mailto:[EMAIL PROTECTED] If you can smile when things go wrong You obvoiusly have someone in mind to blame -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Unsubscribe - mailto:[EMAIL PROTECTED]
Re: Buffer Underrun
On 18/06/2008, at 11:18 AM, William Crabb wrote: Hi All, I'm hoping someone can help me understand this... Occasionally when I attempt to burn a dvd of images, it comes up with the message Buffer Underrun and the burning aborts. I have just tried to burn 2.65GB onto a 4.7GB dvd and it happened. There is about 5GB available on the HD. And then if I go to burn something else it will be fine. There seems to be no reason to it. WHY WHAT DOES IT MEAN? Hello Rosalyn, Buffer Underrun: CD-R/DVD-R drives put information from your hard drive into a buffer (i.e. memory area) before they write (copy) it to the Disc. The idea behind a buffer is to maintain a steady flow of information to the unit. When you burn a CD or DVD, it's done on the fly. The CD-R/DVD-R drive tries to keep its buffer full (or close to it) at all times. As long as there is information in the buffer, the CD-R /DVD-R drive can write to the disc. If the buffer gets emptied out and not refilled (usually due to the computer being busy with something else) the CD-R/DVD-R drive has nothing to write to the Disc that's spinning inside of it. Unfortunately, a CD/DVD has to have information on every section that's written, so you end up with the buffer underrun error and (in most cases) a disc that is useless. To help prevent this problem, don't mess with your computer while it's writing to a Disc, Quit other applications (you may want to disable your screen saver too). Also try burning at a slower speed. Cheers, Ronni -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Unsubscribe - mailto:[EMAIL PROTECTED]
Re: Buffer Underrun
Thanx heaps Ronni, That's makes a lot of sense, you explain things beautifully. Much appreciated. Rosalyn On 18/06/2008 11:59 AM, Ronda Brown [EMAIL PROTECTED] wrote: On 18/06/2008, at 11:18 AM, William Crabb wrote: Hi All, I'm hoping someone can help me understand this... Occasionally when I attempt to burn a dvd of images, it comes up with the message Buffer Underrun and the burning aborts. I have just tried to burn 2.65GB onto a 4.7GB dvd and it happened. There is about 5GB available on the HD. And then if I go to burn something else it will be fine. There seems to be no reason to it. WHY WHAT DOES IT MEAN? Hello Rosalyn, Buffer Underrun: CD-R/DVD-R drives put information from your hard drive into a buffer (i.e. memory area) before they write (copy) it to the Disc. The idea behind a buffer is to maintain a steady flow of information to the unit. When you burn a CD or DVD, it's done on the fly. The CD-R/DVD-R drive tries to keep its buffer full (or close to it) at all times. As long as there is information in the buffer, the CD-R /DVD-R drive can write to the disc. If the buffer gets emptied out and not refilled (usually due to the computer being busy with something else) the CD-R/DVD-R drive has nothing to write to the Disc that's spinning inside of it. Unfortunately, a CD/DVD has to have information on every section that's written, so you end up with the buffer underrun error and (in most cases) a disc that is useless. To help prevent this problem, don't mess with your computer while it's writing to a Disc, Quit other applications (you may want to disable your screen saver too). Also try burning at a slower speed. Cheers, Ronni -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Unsubscribe - mailto:[EMAIL PROTECTED] -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Unsubscribe - mailto:[EMAIL PROTECTED]
Re: Buffer Underrun
Rosalyn, Further to Ronni's explanation , later models of CD and DVD burners are equipped to handle a Buffer under run Prevention control . The control needs to be enabled in your Mac software as well . Roxio's Toast software has that facility and it works fine for me. Never lost a disc . Because I use Toast exclusively I cannot tell you whether the Mac Burn function has the same facility . HTH's Bob On 18/06/2008, at 12:08 PM, William Crabb wrote: Thanx heaps Ronni, That's makes a lot of sense, you explain things beautifully. Much appreciated. Rosalyn On 18/06/2008 11:59 AM, Ronda Brown [EMAIL PROTECTED] wrote: On 18/06/2008, at 11:18 AM, William Crabb wrote: Hi All, I'm hoping someone can help me understand this... Occasionally when I attempt to burn a dvd of images, it comes up with the message Buffer Underrun and the burning aborts. I have just tried to burn 2.65GB onto a 4.7GB dvd and it happened. There is about 5GB available on the HD. And then if I go to burn something else it will be fine. There seems to be no reason to it. WHY WHAT DOES IT MEAN? Hello Rosalyn, Buffer Underrun: CD-R/DVD-R drives put information from your hard drive into a buffer (i.e. memory area) before they write (copy) it to the Disc. The idea behind a buffer is to maintain a steady flow of information to the unit. When you burn a CD or DVD, it's done on the fly. The CD-R/DVD-R drive tries to keep its buffer full (or close to it) at all times. As long as there is information in the buffer, the CD-R /DVD-R drive can write to the disc. If the buffer gets emptied out and not refilled (usually due to the computer being busy with something else) the CD-R/DVD-R drive has nothing to write to the Disc that's spinning inside of it. Unfortunately, a CD/DVD has to have information on every section that's written, so you end up with the buffer underrun error and (in most cases) a disc that is useless. To help prevent this problem, don't mess with your computer while it's writing to a Disc, Quit other applications (you may want to disable your screen saver too). Also try burning at a slower speed. Cheers, Ronni -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Unsubscribe - mailto:[EMAIL PROTECTED] -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Unsubscribe - mailto:[EMAIL PROTECTED] -- The WA Macintosh User Group Mailing List -- Archives - http://www.wamug.org.au/mailinglist/archives.shtml Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml Unsubscribe - mailto:[EMAIL PROTECTED]
