I love this and I love seeing that it's from 2026 and someone still took the time to do all this testing- it must have been seriously involved because even at 6x it takes a while to fill up a DVD, and then to repeat that hundreds of times on several discs would be an eternity.
I haven't used a DVD+-RW in several years, as wireless file transfer over networks and flash drives handle pretty much all of my needs now, but I sure used the heck out of my DVD writer when I had it. I had no idea these discs could go hundreds of writes before failure, I always got paranoid about reliability and probably never went above 20 writes on a disc.
Edit: at the end of the post the author says, "that’s about 4020 hours across two drives, 5248 burns and both drives are still seemingly operating just fine." What a colossal amount of time.
From my personal experience, the article and the comments I read here they seriously undersold the reliability of rewriting. For any other RW medium (audio or video cassettes, even floppies) I remember ad campaigns by Sony, TDK, Philips, … on tv. But not for these.
I feel in general the industry was more conservative making these kind of estimates than it is today. I assume they also benefited from years of CD-RW field experience honing the tech.
Ye, having experienced the "joys" of rewriteable CDs, I completely skipped the DVD RWs, expecting more of the same. Guess it wasn't, but then again, thumb drives became a thing.
DVD-RWs always seemed like complete magic to me. I had no idea how they worked, or why they worked. I made and wiped DVD-RWs as a teenager dozens of times, because my dad got annoyed that I kept using up all his DVD-R's, so I bought like three DVD-RWs and used them for all my experiments.
I don't think I got anywhere near the limits for any of them, as I don't remember getting any faults from them, but they were always cool to me.
I was also one of the happy few who had a DVD-RAM drive for my desktop as a teenager; I never really understood why DVD-RAM never caught on, because it seemed to work fine for me, and it was kind of nice not having to wipe the disk to erase stuff.
dvd-ram drives and media were always premium products, with the drives at least ~4x more expensive than the -r drives of the time, and the media was much worse than that.
When -r disks bought in bulk cost ~20c each, $10 disks are a hard sell.
Well. There is a laser, the first time you write a DVD-RW the laser burns holes into the disc, those are your ones and zeroes. Then if you want to rewrite it you have to fill in the holes so the drive uses an epoxy covered brush to make sure the disc has a smooth layer, then it makes new holes.
It's really the one physically possible way to implement it if you think about it.
Doesn't it use a special metal layer, and the laser high-heats the spots to make them amorphous (to write) and then low-heats them to crystallize (to erase)?
It comes years too late, but I finally understand the reliability problems I had with a DVD drive mounted on its side. If only I'd had your insight then, I could have taken the PC to a playground and burnt disks on the carousel.
My understanding is Optane is still unbeaten today when it comes to latency. Has anyone examined its use as a workstation OS volume compared to leading SSD's?
If you have a Pro edition license most things Windows does are a registry key away. The entire policy branch of the registry is designed to have configuration pushed down from the network like when and how to update, but you can also set all of those keys manually.
(Also, no hacking is necessary to set up a Windows Pro install with a local account, just tell it you're going to domain join it.)
The local account tip is a good one. I used it when setting up Windows 11 Pro on my desktop PC.
Regarding updates: you might not even need to think about registry keys! I found these Windows 10 group policy settings to work well for many years: https://news.ycombinator.com/item?id=18157968 - and I'm still using them with Windows 11, near enough, though it seems you now need to go to "Windows Update\Manage end user experience" to find the Configure Automatic Updates setting I mention.
(I've also switched to using option 2 (Notify for download and auto install) rather than 3 (Auto download and notify for install), on the basis that it sounds safer, and I've had no problems from doing that. Not to say that I actually remember having any problems from letting Windows download the updates ahead of time! - but I'm comfortable living dangerously.)
One hint for the wary: Don't delay feature updates for the maximum allowed in the group policy editor. I couldn't figure out why I was getting forced reboots for updates despite other policies requiring it to ask permission. Turns out that if the update hits the group policy maximum, it forces an update immediately, other policies be damned.
So set it to the max - 14 days if you want some time to apply updates at your leisure, and you are wary of non-critical updates.
If you don't want feature updates, go Windows 11 IoT Enterprise LTSC. It's a comparative breath of fresh air and what Windows should have been all along. No ads, no new unwanted bloat shoved down your throat, no mandatory TPM, and pretty much the longest security patch commitment of anything out of Microsoft. It works great as a daily driver.
You could also use an OS that doesn't tend to have dodgy updates that brick your system, such as most Linux distro. Nor force you to update if you don't want to.
Funny how a large company like Microsoft can't figure out QA, but volunteer Linux distros with much less resources can.
(A lot of Windows specific software works in wine these days, Valve's investment into improving it for games have helped for applications too. Not everything, and if you are stuck with such software, yeah that sucks.)
IIRC, the issue was never how often the DVD-R/W could be rewritten.
The issue was the fact that everybody assumed that the DVD-R/W discs had roughly the same lifetime as actual DVDs and that turned out to be woefully incorrect.
People did? I thought that was common knowledge, as it also was for CDs. Not only that, compatibility with players were much worse.
Though there were times were RW discs cost as much as normal ones, and some friends of mine defaulted to buying RW even for stuff that was write once. I didn't get that, but for them the ability to, maybe, reuse the disc outweighed any reliability issues.
I didn’t know there was a rewritable dvd format. My dad had a bunch of dvds, I used to love sneaking one off to play on my computer when I was a kid, since he stopped noticing when he got into bluray
Really astounding dedication! And to be honest, I'm really surprised that DC Erase actually revived discs. Maybe the next step is to pick one disc, and keep using DC Erase, and see when it absolutely and totally fails?
When I was a kid I read that you can format DVD-RW in a way that makes Windows see it as a normal filesystem. The next step was "can you install a video game onto a disc?" and the answer was "nope, you cannot, at least not Lego Star Wars".
Also, there was a strange phenomenon that I'd love to see someone explain. I burned The Sims 2 onto CDs. The game worked. After some time the disc would fail at a file called voice1.package. I burned a second disc, which would again last some time, and then fail at the same exact file. I went through many discs, each one displaying the same behavior.