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more alphabet soup :-(

by doug waud

Hi again Just got the latest PC Magazine and I note that my table of CD/DVD acronyms (plagarized from PC World) is already out of date. :-) Now we have CD-MRW where the M refers to Mount Ranier. Although "there have been no specific announcements of DVD+MRW drives yet, Phillips recently proposed an addition ... The Sony DRU-500A apparently ships with Mount Ranier. (The Mount Ranier format put a Main defect table in the Lead-in area (area outside the data area) and a copy of the defect table in the lead-out area.It also sets aside some space in the data area as a "replacement area" where date which would have landed in a bad block is put. The price is somewhat slower reads/writes and slightly reduced capacity. The gain is reliability. Non-MRW drives will need custom software to read MRW data.) doug

Nov. 29, 2002

Re: [Wlug] DVD writeable media

by doug waud

Robert L Krawitz wrote: > Date: Mon, 25 Nov 2002 15:20:42 -0500 > From: doug waud <douglas.waud(a)umassmed.edu> > > Type Can be written to by drives of type > > DVD-RW DVD+RW DVD-RW/+RW DVD-RAM/-R/-RW DVD-RAM/-R > > DVD-R yes no yes yes yes > DVD-RW yes no yes yes no > > Defct Mngmt Max Rewrites Seq/Rand Data/video? > > no n/a seq video > no 1000 seq data > > Why is DVD-R listed as video only, and DVD-RW as data only? > > -- > Robert Krawitz <rlk(a)alum.mit.edu> As I implied in my first posting I am just passing this info on; I am not including any thought. :-) Seriously, I can't tell from the article why this is the case. They do note that "DVD-RW format leaves disk formatting up to the software .... must perform a full disk format --- which can take an hour --- before you can start writing to the disk". Perhaps they feel this investment of time is beyond the attention span of those who watch TV. :-) I can also speculate that the ability to rewrite the DVD-RW may have tipped them in favor of it for data. Perhaps all that we are seeing is the problems that arise when you try to force data into a tabular format. :-) Take your pick/and-or make your own guess! doug

Nov. 29, 2002

Re: [Wlug] DVD writeable media

by Robert L Krawitz

Date: Mon, 25 Nov 2002 15:20:42 -0500 From: doug waud <douglas.waud(a)umassmed.edu> Type Can be written to by drives of type DVD-RW DVD+RW DVD-RW/+RW DVD-RAM/-R/-RW DVD-RAM/-R DVD-R yes no yes yes yes DVD-RW yes no yes yes no Defct Mngmt Max Rewrites Seq/Rand Data/video? no n/a seq video no 1000 seq data Why is DVD-R listed as video only, and DVD-RW as data only? -- Robert Krawitz <rlk(a)alum.mit.edu> Tall Clubs International -- http://www.tall.org/ or 1-888-IM-TALL-2 Member of the League for Programming Freedom -- mail lpf(a)uunet.uu.net Project lead for Gimp Print -- http://gimp-print.sourceforge.net "Linux doesn't dictate how I work, I dictate how Linux works." --Eric Crampton

Nov. 28, 2002

quota on RH 8.0

by Aramico

Hi All, I've got a problem here..... On RedHat 8, I tried to implement quota. I have created the aquota.user on / and the other define directory. ..and I have reconfigure the /etc/fstab and wrote the tag in order to enable the quota. When I'm tryin to run quotacheck -avug, there is a notifications as shown bellow : quotacheck: WARNING - Quotafile //aquota.user was probably truncated. Can't save quota settings... quotacheck: WARNING - Quotafile //aquota.group was probably truncated. Can't save quota settings... quotacheck: Cannot remount filesystem mounted on / read-only so counted values might not be right. Please stop all programs writing to filesystem or use -m flag to force checking. what was wrong here ? can somebody tell me how to implement the quota here ? I want to know the diffrence to the thing that I've done. Thanks.

Nov. 27, 2002

Re: [Wlug] DVD writeable media

by doug waud

Andy Stewart wrote: > > The message thread about DVD writers makes me think that there are many > standards or types of writeable DVD media that not all drives can handle > - is > this true? > > Could somebody compare/contrast the different types? That PCWorld article I mentioned earlier in this thread has a nice table. The first step is to note that there are three pairs: DVD-R and DVD-RW DVD+R and DVD+RW CD-R and CD-RW plus one single, DVD-RAM which (so far) has no RW sibling. (I include CD's to emphasize the pattern) That article also has a table: Type Can be written to by drives of type DVD-RW DVD+RW DVD-RW/+RW DVD-RAM/-R/-RW DVD-RAM/-R DVD-R yes no yes yes yes DVD+R no yes yes no no CD-R yes yes yes yes no DVD-RW yes no yes yes no DVD+RW no yes yes no no DVD-RAM no no no yes yes CD-RW yes yes yes yes no and with same rows: Capac Cost Cartrige? Quick Format Data verifn 4.7GB $4 no n/a no 4.7 5 no n/a no 700MB 1 no n/a no 4.7 6 no optional no 4.7 7 no yes no 4.7* 15 yes** n/a*** yes 700 1 no no no and still with same rows: Defct Mngmt Max Rewrites Seq/Rand Data/video? no n/a seq video no n/a seq video no n/a seq video & data no 1000 seq data yes**** 1000 seq data yes 100,000 random data no 1000 seq data * double sided gives 9.4 GB ** disks also available w/o cartridges on a spindle *** DVD-RAM disks are preformatted **** only on Mount Ranier writes which are not supported by most drives Hope the formatting survives! :-) doug

Nov. 25, 2002

Re: [Wlug] DVD writeable media

by Robert L Krawitz

From: "Keller, Tim" <Tim.Keller(a)stratus.com> Date: Mon, 25 Nov 2002 12:48:44 -0500 Well the next question is... What do you want todo... The cross post in question wants to backup large amounts of data. I would think a drive that could do DVD-RW or DVD+RW would be their choice since they could setup some sorta rotation. As for supported drives you'd want to check the cdrecord website. Actually, I *don't* want to set up a rotation. I want permanent, long-term storage. These things are pretty cheap now ($5 or thereabouts); 2-4 of these per month, plus maybe one more for weekly incrementals, isn't going to bankrupt me. Now, if you want to make backups of the DVD's that you own, or convert the VHS you've got into DVD, you'll also want a drive that can author DVD disks. However you'll want to check a site like www.vcdhelper.org they've got a good matrix of what different disks DVD players supports (such as VCD/SVCD/DVD-R/DVD-RW/etc...) Personally, I'm too disgusted at the entertainment-retail complex to really even want to bother with these things in the first place (left to myself, I wouldn't even bother owning a TV these days). -- Robert Krawitz <rlk(a)alum.mit.edu> Tall Clubs International -- http://www.tall.org/ or 1-888-IM-TALL-2 Member of the League for Programming Freedom -- mail lpf(a)uunet.uu.net Project lead for Gimp Print -- http://gimp-print.sourceforge.net "Linux doesn't dictate how I work, I dictate how Linux works." --Eric Crampton

Nov. 25, 2002

RE: [Wlug] DVD writeable media

by Keller, Tim

Well the next question is... What do you want todo... The cross post in question wants to backup large amounts of data. I would think a drive that could do DVD-RW or DVD+RW would be their choice since they could setup some sorta rotation. As for supported drives you'd want to check the cdrecord website. Now, if you want to make backups of the DVD's that you own, or convert the VHS you've got into DVD, you'll also want a drive that can author DVD disks. However you'll want to check a site like www.vcdhelper.org they've got a good matrix of what different disks DVD players supports (such as VCD/SVCD/DVD-R/DVD-RW/etc...) Personally I've had luck making backup's of my DVD's onto DVD-R media. However this was using a mix of freeware windows utilities and Nero, I'm pretty sure that that the cdrcord-prodvd utilities it would work fine. Later, Tim. -----Original Message----- From: Brian J. Conway [mailto:bconway@alum.wpi.edu] Sent: Sunday, November 24, 2002 15:36 PM To: wlug(a)mail.wlug.org Subject: Re: [Wlug] DVD writeable media > The message thread about DVD writers makes me think that there are many > standards or types of writeable DVD media that not all drives can handle > - is this true? Yes, DVD-R, DVD-RW, DVD+R, DVD+RW, and DVD-RAM. Why share sales with a standard format when a company can make up its own DVD standard to sell and hope to take the market with? > Could somebody compare/contrast the different types? Here's a good rundown on the different types: http://www.dvformat.com/2002/03_mar/features/dvd_standards.htm Brian J. Conway bconway(a)alum.wpi.edu "LINUX is obsolete" - Andrew S. Tanenbaum, creator of Minix - Jan 29, 1992 _______________________________________________ Wlug mailing list Wlug(a)mail.wlug.org http://mail.wlug.org/mailman/listinfo/wlug

Nov. 25, 2002

Re: [Wlug] DVD writeable media

by Brian J. Conway

> The message thread about DVD writers makes me think that there are many > standards or types of writeable DVD media that not all drives can handle > - is this true? Yes, DVD-R, DVD-RW, DVD+R, DVD+RW, and DVD-RAM. Why share sales with a standard format when a company can make up its own DVD standard to sell and hope to take the market with? > Could somebody compare/contrast the different types? Here's a good rundown on the different types: http://www.dvformat.com/2002/03_mar/features/dvd_standards.htm Brian J. Conway bconway(a)alum.wpi.edu "LINUX is obsolete" - Andrew S. Tanenbaum, creator of Minix - Jan 29, 1992

Nov. 24, 2002

DVD writeable media

by Andy Stewart

HI everybody, The message thread about DVD writers makes me think that there are many standards or types of writeable DVD media that not all drives can handle - is this true? Could somebody compare/contrast the different types? Thanks, Andy -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA USA http://www.wlug.org

Nov. 24, 2002

Re: [Wlug] DVD writer

by doug waud

Robert L Krawitz wrote: > I'm thinking of getting a DVD writer. My primary intention is to use > it for system backups; CD's just don't cut it any more (with about 18 > GB and 11 GB respectively on my two systems). The Sony DRU-500A looks > like a rather interesting one, supporting a lot of formats. Any > comments on that vs. any of the others out there? Hi First let me note that I have no direct experience here. I have been trying to follow the area and just want to tell you that the Dec 2002 PC World just reviewed it. They picked the Sony DRU-500A as their "Best buy" (and give a street price of $349). In general they note that DVD-RAM would be best if you were just doing backups. On the other hand they pick the Sony drive because it can do everything else! :-) I assume they are trying to make a recommendation for general use. They list only two drives that do DVD-RAM: Pacific Digital DVD Burner U-30116 at $299 Street and Vivastar RS-111 at $350 Both do just DVD-RAM and DVD-R They say DVD-RAM is preformatted which "manufacturers claim gives gives random access capability" and also "contain extensive defect-management and error-correction technologies, to ensure correct data storage" That's a summary, you may want to check the original article (page111) to make your own call. :-). doug

Nov. 24, 2002