dd block size limit on ext3?
I'm wanting to setup an encrypted iso file for sensitive information. There is a lot I want to 'backup' onto this encrypted iso- about 4.2G worth. I have done this procedure before, but not with such large files.
First I'm using 'dd' to create the iso image file, but it's failing when I give it the size of file I want it:
> dd if=/dev/urandom of=ISO0.iso bs=4.2G count=1
dd: invalid number '4.2G'
I'm attempting to create ISO0.iso on an ext3 filesystem, so it can't be a file-size limitation. I have files much larger than 4.2G on the same drive- same directory even! This makes no sense. Can someone explain why this might not be working? I'm using dd version 6.9
Thanks,
- skubik
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