Checking burnt iso

[jessejazza]

I haven't been doing this for a while. For the new version last month i thought i should before installing.

After putting the DVD in the drive, in the terminal iirc one should do
cd /dev/sda then sha256sum 'name of iso'
it comes back no such directory.

I've mislaid my linux book so can't look it up. i know it's simple but it's a while since i last did it and i can't think what i am doing wrong.

[Eadwine Rose]

Right click on the iso, compute sha, compare it to the file it came with.

Oh wait, that is for a file on the harddrive.


Sorry.. messed that up.

[j2mcgreg]

I haven't been doing this for a while. For the new version last month i thought i should before installing.

After putting the DVD in the drive, in the terminal iirc one should do
cd /dev/sda then sha256sum 'name of iso'
it comes back no such directory.

I've mislaid my linux book so can't look it up. i know it's simple but it's a while since i last did it and i can't think what i am doing wrong.

The easiest way is to have your burning utility verify the DVD post burn.

[jessejazza]

I haven't been doing this for a while. For the new version last month i thought i should before installing.

After putting the DVD in the drive, in the terminal iirc one should do
cd /dev/sda then sha256sum 'name of iso'
it comes back no such directory.

I've mislaid my linux book so can't look it up. i know it's simple but it's a while since i last did it and i can't think what i am doing wrong.

The easiest way is to have your burning utility verify the DVD post burn.

But that depends on where the sha256sum file is. Using Brasero which i do, if checking the newly downloaded iso on hard disk that's okay, but for checking a burnt DVD where do you put the sha256sum file. Brasero says it is checking but i wonder if that's the case. Hence why i wanted to do it manually so i can be sure.

[atomick]

try man wodim

cd to the cdrom/dvd and ls -lat does it show any file index with files like normal in terminal mode similar to on / doing anything ls -lat

try the full cmdline syntax sudo wodim -msinfo /dev/sda - does it show any information as to disc write size and space / space remaining if a multi-session is started and its disc label name?
(this, its been a long time since playing at this type of File System. ).

sudo sha256 -b /dev/sda/FileName.iso - as a full syntax cmdline example if a terminal shell has been opened per say.

https://unix.stackexchange.com/question ... f-cds-dvds

might share to interest.