DVD burned with k3b slightly smaller than his iso ?
Yesterday I installed mandriva 2010.2 in my netbook using a DVD from a Linux magazine, and using my portable DVD /DVD-RW burner (reads and writes both DVD-R and DVD+R).
All gone ok , and then I downloaded two windows 7 isos from msdn page(one x64 for my pc and one x32 for my netbook , to dual boot with ubuntu)
The SHA1 of both are the same that are published in the msdn site.
I burned both iso with k3b, at 4x using in one case a verbatim DVD+R lightscribe and in the other a verbatim DVD-R lightscribe because in the shop there was only one DVD-R (my burner doesn't support lightscribe, I bought them by mistake, but apart of the possibility of "write" something with laser in the top layer, they are normal DVDs )
In both cases seems that the DVD burned is between 12 MB and 40 MB smaller than the iso.
In the burner window, behind the general progress bar there was a relation between the MiB writen (that grows until 98.5% and then stops) and the total MiB,but the writen MiB never grow until the total. At 98.5 % stops in one iso with 12 MiB less ,And in the second , about 42 MiB ( 3042 MiB of 3075 MiB at 98.5%),and stop growing until got 100%,then the burning finishes And k3b says it is correct.
I usually enable the data verify option, In this case for both isos the verification is correct.
I tried to boot until the installer of one of the two DVDs and all seems ok , but until later I won't install it.
What is your opinion about this thing of the size mismatch ? Seems that the DVDs burned ok no ?
Today i installed Windows in the Netbook. Seems there wasn't any problem. It is quite obvious that the burn went well, but I am curious why if one iso is 3075 MB,are burned 40 mb less.