68 lines
4.3 KiB
Plaintext
68 lines
4.3 KiB
Plaintext
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Episode: 3986
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Title: HPR3986: Optical media is not dead
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Source: https://hub.hackerpublicradio.org/ccdn.php?filename=/eps/hpr3986/hpr3986.mp3
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Transcribed: 2025-10-25 18:19:20
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---
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This is Hacker Public Radio Episode 3986 from Monday the 13th of November 2023.
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Today's show is entitled, Optical Media is Not Dead.
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It is hosted by Archer 72 and is about 7 minutes long.
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It carries a clean flag.
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The summary is, Archer 72 shows command line options for creating and writing isso files.
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Hello, this is Archer 72.
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Welcome to Hacker Public Radio.
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In this episode,
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in this episode I ponder whether or not optical media is dead.
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Actually, that's not the case.
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I'm just bringing information, inspired by glad to about a year ago,
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and also the Q is low.
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So, here goes.
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First thing is what the media size is.
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4.7GB DVD is actually capacity is 4.377GB.
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So, you know how much room you'd have to work with to put data on a DVD.
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And with Blu-ray, a disk with a 25GB capacity is the equivalent of 23.28GB.
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And one normally rated at 50GB.
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And practice can record about 46.57GB of data.
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First, you generate a iso image with gen iso image,
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or alternatively make a iso fs with gen iso image space dash u, space dash r,
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space allow lowercase, space dash allow multidot,
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dash o, mydvd.iso, and then quotes $1 sign 1, signifying on input.
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When I went back to look at this command, I noticed that it was a little messy with the dash u flag.
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And also, I shouldn't have, I shouldn't have used this command verbatim because the dash u
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allows for untranslated filings completely validating the iso 9660 standards described above.
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It enables the following flags dash allow leading dots dash relax file names.
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dash allow lowercase dash allow multidot dot dash no iso translate allows more than one period
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character in the file name as well as mixed case file names. This is useful on hpux
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where the built-in cdfs file system does not recognize any extension used with extreme caution.
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What I did keep in this command was the dash r which generates susp and rock ridge
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records using the rock ridge protocol to further describe the files on the iso 9660 file system.
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See reference in the Wikipedia article.
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Now you're ready to burn your data from the iso file.
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The note though is in the arch wiki for grow isofs is make sure that the medium is not mounted
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before you write to it. Okay, that actually all so applies to any optical media.
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Mounting may happen automatically if the medium contains a reasonable,
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for the medium contains a readable file system. In the best case it will prevent the burn
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programs from using the burner device. In the worst case there will be a misburden
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because read operations disturb the drive. If so, do unmount slash dev slash sr0.
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Grow isofs has a small bug with blank dvd correction with blank bd dash r media.
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It issues an error after the burn is complete. Programs like k3b then believe the whole burn
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failed. To prevent this either format the blank bd r by dvd plus rw format dev sr0 before
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submitting it to grow isofs or use great grow isofs option use the force loop equals spare colon
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none. To burn a readily prepared iso image file iso image. iso onto an optical medium run for cd
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cd record dash v dash s a0 dev equals slash dev slash sr0 space iso image. iso in the ss
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s a0 or s a0 means session at once and for dvd or blue redisk use great grow isofs dash dvd dash
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compact space dash c space slash dev slash sr0 equals iso image dot iso
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another command that can be used with cd dvd or blue ray is x or iso
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dash a s cd record dash v dev equals slash dev space
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sr0 space dash d a0 d a0 space iso image dot iso
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and d a0 means disc at once did it again d a0 means disc at once one tip i found when i was
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preparing for the show was to not put your optical media in paper sleeves instead put them in
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jewel cases that's all i have for now have fun using the command line
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and feel free to record a shower of your own
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you have been listening to hacker public radio at hacker public radio does work
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today's show was contributed by a hbr listener like yourself if you ever thought of recording
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or cast and click on our contribute link to find out how easy it means hosting for hbr has been
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kindly provided by an honest host dot com the internet archive and our sing dot net on the
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satellite status today's show is released on their creative commons attribution 4.0 international
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