Bug#788842: D-I: Installer stuck at 33% when formatting ext4.
Debian installer stops at 33% when formatting a drive. I tried it with
both a KDE Live ISO and a netinst iso, (albeit both on the same USB
drive) and both hung up on 33% when formatting a disk. I did do a
wipefs on the disk but that didn't solve the issue. I formatted it in
another distro, and mkfs.ext4 did work. I checked the integrity of the
USB stick in the installer, and it said that the disk was fine. Alt+F4
logs don't really show anything.
I tried googling it and there was a bug in an old release (See:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=767682),and I wiped
the disk clean as suggested but that did not work either.