An up-to-date look at free software and its makers
PROJECTS ON THE MOVE
Although a couple of scratches are visible, you can read from the backup CD. The question is, for how long? Cdck measures the sector access times to give you an idea. Have you overwritten the bootloader on your disk? Super Grub Disk to the rescue!
CDs and DVDs use optical structures of approximately 100 nanometers to store data. Even tiny scratches can destroy large numbers of data bits, without the user even noticing at first. Data redundancy and error-correcting techniques, such as cross-interleaved Reed-Solomon code, support error-free data reading, despite damage to parts of the disk. Even newly burned media might not be free of errors: depending on how well (or how badly) your burning device supports your choice of media, the disks could have unreadable sectors right from the outset.
It would be nice to know how much of the existing redundancy has already been used up, or how grave the danger of imminent data loss is. The test functions that many burning tools use for media verification are not a big help. The functions only check whether the filesystem is legible after applying error-correction techniques.
Buy this article as PDF
(incl. VAT)
Buy Linux Magazine
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters
Support Our Work
Linux Magazine content is made possible with support from readers like you. Please consider contributing when you've found an article to be beneficial.
News
-
The GNU Project Celebrates Its 40th Birthday
September 27 marks the 40th anniversary of the GNU Project, and it was celebrated with a hacker meeting in Biel/Bienne, Switzerland.
-
Linux Kernel Reducing Long-Term Support
LTS support for the Linux kernel is about to undergo some serious changes that will have a considerable impact on the future.
-
Fedora 39 Beta Now Available for Testing
For fans and users of Fedora Linux, the first beta of release 39 is now available, which is a minor upgrade but does include GNOME 45.
-
Fedora Linux 40 to Drop X11 for KDE Plasma
When Fedora 40 arrives in 2024, there will be a few big changes coming, especially for the KDE Plasma option.
-
Real-Time Ubuntu Available in AWS Marketplace
Anyone looking for a Linux distribution for real-time processing could do a whole lot worse than Real-Time Ubuntu.
-
KSMBD Finally Reaches a Stable State
For those who've been looking forward to the first release of KSMBD, after two years it's no longer considered experimental.
-
Nitrux 3.0.0 Has Been Released
The latest version of Nitrux brings plenty of innovation and fresh apps to the table.
-
Linux From Scratch 12.0 Now Available
If you're looking to roll your own Linux distribution, the latest version of Linux From Scratch is now available with plenty of updates.
-
Linux Kernel 6.5 Has Been Released
The newest Linux kernel, version 6.5, now includes initial support for two very exciting features.
-
UbuntuDDE 23.04 Now Available
A new version of the UbuntuDDE remix has finally arrived with all the updates from the Deepin desktop and everything that comes with the Ubuntu 23.04 base.