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For you to write to a disk, the write-protect notch must be closed.
The hard plastic case has a slider in it which you can use to open or close the notch as you want. When the notch is open the disk is write protected.
The old 5.25 inch disks had a notch that is covered/uncoverd for write protection. The not so floppy 3.5 inch disks have a little plastic slide that did the same thing. Software disks in that format might have a notch that can be covered with tape.
Yes. The write protection notch is the same for USB, floppy, and other portable media. What is is supposed to do is prevent changing of the data, not reading of the data, on the disk.
I am trying to format a dvd/rw disk but it is write protected. how do i unlock it?
The write protect notch - prevents data being written to a disk. Have a look at the picture in the related link. The two largest disks have a notch cut out from the outer case (see the right-hand side of the disk in the middle of the picture. The 31/2" disk has a moveable 'tab' usually black - which is visible in the bottom left corner of the blue case.
Set the write protect tab (or tape over the write protect notch).
Write-Protect Tab (you call it a "notch") is a little plastic rectangle in the upper right corner of most floppy disks. When the hole is open, the disk is locked and you can't add any more files to the floppy. If the write-Protect Tab is missing, simply cover the hole with a bit of sticky tape and you can add more files to the floppy..
Because DVD-R is already formatted. If you try to format it you will damage it permanently. You should write data on a DVD-r disk without formatting it.
The "-s" switch in the format command is used to format the disk so that it is a "system" disk. In other words, it makes it a "bootable" disk.
The IDE Driver software that is needed to Format, write, read, fragment and maintain the FAT for that.
Most CDs are "write-protected" when data has been written to them and are not rewritable, or are factory pressed. You cannot write over these as it is physically impossible. no, but you can get a pen and write "format" on the disk and THEN it will be physically possible to write on it :P