Backup. Now. If you can. I think that the fact that it's still working is a lucky accident, as soon as the filesystem need to check the superblock it will break.
– RmanoNov 17 '15 at 21:56
In case you interrupted dd while running there may be remnants of some of your files that were not yet overwritten. Only those files can be recovered (e.g. with TestDisk/PhotoRec). All other files will be lost. See https://askubuntu.com/questions/94421/is-there-a-way-to-recover-files-from-a-storage-device-partially-overwritten-with
– TakkatNov 17 '15 at 22:02
yeah it only ran for 2.7GB out of 480GB. First thing I did was git commit and push my school work, luckily. I already have it backed up, I'm just scared that grub will get messed up since grub is not backed up only my ext4 partition
– PantsNov 17 '15 at 22:21
@JeanLuis Your grub might be messed up but if worst comes to worst you can reinstall Ubuntu and then just put your data back on the drive.
– Alex LoweNov 17 '15 at 22:31
dd
while running there may be remnants of some of your files that were not yet overwritten. Only those files can be recovered (e.g. with TestDisk/PhotoRec). All other files will be lost. See https://askubuntu.com/questions/94421/is-there-a-way-to-recover-files-from-a-storage-device-partially-overwritten-with – Takkat Nov 17 '15 at 22:02