I'm doing a thesis about forensic analysis and I'd like to format a disk with an ext4 file system without zeroing it, to analyze the possibility to recover deleted files. This is a problem, because mkfs.ext4 doesn't have a parameter to avoid the zeroing and if I use the standard behavior everything inside the disk is set to zero. Anyone knows how it's possible to format the disk without zeroing all sectors? Thanks in advance for your help.
I agree with Paul, I don't think there's a zero wipe during the format process. I occasionally need to zero drives prior to imaging with dd to minimize image size and the process is quite slow.