[Nuslos]

Okay, I have an .dmg file that I want to burn onto an HP DVD+RW, 4.7gb

The file shows up as only 4.2gb, the disk shows up as 4.4gb in Disk Utility, when I try to burn it says the disc doesn't have enough space. Also the DVD+RW says its write status is Locked in disk utility..

what's my problem? :/

[imitchellg5]

Verify and Repair Disk Permissions on your HDD and see if that helps.

[Nuslos]

Verify permissions for “Macintosh HD”
Determining correct file permissions.
Permissions differ on ./Applications/iTunes.app/Contents/Frameworks/InternetUtilities.bundle/Contents/MacOS/InternetUtilities, should be -rw-rw-r-- , they are -rwxrwxr-x
User differs on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Info.plist, should be 0, owner is 501
User differs on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/MacOS/Flash Player, should be 0, owner is 501
User differs on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/MacOS, should be 0, owner is 501
User differs on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Resources/Flash Player.rsrc, should be 0, owner is 501
Permissions differ on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Resources/Flash Player.rsrc, should be -rw-rw-r-- , they are -rw-r--r--
User differs on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Resources, should be 0, owner is 501
User differs on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents, should be 0, owner is 501
User differs on ./Library/Internet Plug-Ins/Flash Player.plugin, should be 0, owner is 501
Permissions differ on ./private/var/log/secure.log, should be -rw------- , they are -rw-r-----
Group differs on ./usr/bin/vmmap, should be 8, group is 9

Permissions verification complete
Permissions differ on ./usr/standalone/i386/boot.efi, should be -r-xr-xr-x , they are -r--r--r--
The privileges have been verified or repaired on the selected volume

Repairing permissions for “Macintosh HD”
Determining correct file permissions.
Permissions differ on ./Applications/iTunes.app/Contents/Frameworks/InternetUtilities.bundle/Contents/MacOS/InternetUtilities, should be -rw-rw-r-- , they are -rwxrwxr-x
Owner and group corrected on ./Applications/iTunes.app/Contents/Frameworks/InternetUtilities.bundle/Contents/MacOS/InternetUtilities
Permissions corrected on ./Applications/iTunes.app/Contents/Frameworks/InternetUtilities.bundle/Contents/MacOS/InternetUtilities
User differs on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Info.plist, should be 0, owner is 501
Owner and group corrected on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Info.plist
Permissions corrected on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Info.plist
User differs on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/MacOS/Flash Player, should be 0, owner is 501
Owner and group corrected on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/MacOS/Flash Player
Permissions corrected on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/MacOS/Flash Player
User differs on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/MacOS, should be 0, owner is 501
Owner and group corrected on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/MacOS
Permissions corrected on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/MacOS
User differs on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Resources/Flash Player.rsrc, should be 0, owner is 501
Permissions differ on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Resources/Flash Player.rsrc, should be -rw-rw-r-- , they are -rw-r--r--
Owner and group corrected on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Resources/Flash Player.rsrc
Permissions corrected on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Resources/Flash Player.rsrc
User differs on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Resources, should be 0, owner is 501
Owner and group corrected on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Resources
Permissions corrected on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents/Resources
User differs on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents, should be 0, owner is 501
Owner and group corrected on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents
Permissions corrected on ./Library/Internet Plug-Ins/Flash Player.plugin/Contents
User differs on ./Library/Internet Plug-Ins/Flash Player.plugin, should be 0, owner is 501
Owner and group corrected on ./Library/Internet Plug-Ins/Flash Player.plugin
Permissions corrected on ./Library/Internet Plug-Ins/Flash Player.plugin
Permissions differ on ./private/var/log/secure.log, should be -rw------- , they are -rw-r-----
Owner and group corrected on ./private/var/log/secure.log
Permissions corrected on ./private/var/log/secure.log
Group differs on ./usr/bin/vmmap, should be 8, group is 9
Owner and group corrected on ./usr/bin/vmmap
Permissions corrected on ./usr/bin/vmmap

Permissions repair complete
Permissions differ on ./usr/standalone/i386/boot.efi, should be -r-xr-xr-x , they are -r--r--r--
Owner and group corrected on ./usr/standalone/i386/boot.efi
Permissions corrected on ./usr/standalone/i386/boot.efi
The privileges have been verified or repaired on the selected volume

Disk utility still says the DVD+RW disc is write-protected.. is there any way to change the filesystem of the disc? I think that because the filesystems on the dmg and the dvd+rw are different, the one on the DVD might be taking up extra space that's preventing me from burning to the disc?

[Art Vandelay]

If you have already burned data to the DVD+RW, then you'll need to erase it first before burning to it again.

[Nuslos]

No, it was erased, and large enough.

4.7gb disc, 4.2gb file.. so what happens to the other 500 mb O_o

[Philip J. Fry]

Originally Posted by Nuslos

No, it was erased, and large enough.

4.7gb disc, 4.2gb file.. so what happens to the other 500 mb O_o

Possibly formatting by the OS, though it is strange that much is gone.