compact disc - Does the writing speed when burning a CD or DVD affect the integrity of the data?

I recently burned a few cd's and dvd's, mostly documents for clients. So you always get to choose the burning speed, ranging from 2x to 48x normally. So how does this influence the integrity of the data? Also, will it affect documents like excel files more at higher speeds than say a movie? Then you get the 'verify data' function as optional - doesn't it makes sense to verify the data anyway? It should be by default to check or compare. Lastly, does the writing speed in any way, affect the reading speed after the disc was burned?

Answer

The burning speed affects the integrity of the data quite a lot. It could happen that a disc burnt with 48x speed is not readable properly, or is not readable in some readers, but readable in others, whereas the same data burnt to the same disc with slower speed would be readable everywhere. Other than this effect, there is no difference (so the reading speed will not be affected) - either you can read it or not. Running a verify after burning can give you an answer with high confidence to the question if the disc is readable or not. In borderline cases, however, even a successfully verified disc is not guaranteed to be readable in every possible readers. Usually, those readers having problems with discs burnt with high-speed are the older readers.

Comments

Use Google instead of Bing with Windows 10 search

I want to use Google Chrome and Google search instead of Bing when I search in Windows 10. Google Chrome is launched when I click on web, but it's Bing search. (My default search engine on Google and Edge is http://www.google.com ) I haven't found how to configure that. Someone can help me ? Answer There is no way to change the default in Cortana itself but you can redirect it in Chrome. You said that it opens the results in the Chrome browser but it used Bing search right? There's a Chrome extension now that will redirect Bing to Google, DuckDuckGo, or Yahoo , whichever you prefer. More information on that in the second link.

linux - Using an index to make grep faster?

I find myself grepping the same codebase over and over. While it works great, each command takes about 10 seconds, so I am thinking about ways to make it faster. So can grep use some sort of index? I understand an index probably won't help for complicated regexps, but I use mostly very simple patters. Does an indexer exist for this case? EDIT: I know about ctags and the like, but I would like to do full-text search. Answer what about cscope , does this match your shoes? Allows searching code for: all references to a symbol global definitions functions called by a function functions calling a function text string regular expression pattern a file files including a file

How do I transmit a single hexadecimal value serial data in PuTTY using an Alt code?

I am trying to sent a specific hexadecimal value across a serial COM port using PuTTY. Specifically, I want to send the hex codes 9C, B6, FC, and 8B. I have looked up the Alt codes for these and they are 156, 182, 252, and 139 respectively. However, whenever I input the Alt codes, a preceding hex value of C2 is sent before 9C, B6, and 8B so the values that are sent are C2 9C, C2 B6, and C2 8B. The value for FC is changed to C3 FC. Why are these values being placed before the hex value and why is FC being changed altogether? To me, it seems like there is a problem internally converting the Alt code to hex. Is there a way to directly input hex values without using Alt codes in PuTTY? Answer What you're seeing is just ordinary text character set conversion. As far as PuTTY is concerned, you are typing (and reading) text , not raw binary data, therefore it has to convert the text to bytes in whatever configured character set before sending it over the wire. In other words, when y...

linux - CentOs 7.1 - Install Tomcat 8

I am using this tutorial as a setup reference to getting a Tomcat 8 running on CentOs 7.1 , but after typing: [root@localhost tomcat]# sudo systemctl start tomcat I get the error: Job for tomcat.service failed. See 'systemctl status tomcat.service' and 'journalctl -xn' for details. systemctl status tomcat.service prints the following: [root@localhost tomcat]# systemctl status tomcat.service tomcat.service - Apache Tomcat Web Application Container Loaded: loaded (/etc/systemd/system/tomcat.service; disabled) Active: failed (Result: exit-code) since Wed 2015-11-25 16:54:33 CET; 1min 19s ago Process: 45873 ExecStart=/opt/tomcat/bin/startup.sh (code=exited, status=203/EXEC) Nov 25 16:54:33 localhost.localdomain systemd[1]: Starting Apache Tomcat Web Application Container... Nov 25 16:54:33 localhost.localdomain systemd[1]: tomcat.service: control process exited, code=exited status=203 Nov 25 16:54:33 localhost.localdomain systemd[1]: Failed to start Apache Tomcat Web App...

Notes

Search This Blog