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Thanks! Luckily, I hadn't done much more than just installing Ubuntu, so now I'm reinstalling it, this time with EXT4 :)

• rogerbinns 12y ago
  Just be aware that other filesystems like ext4 do not checksum their data. They have no way of telling if corruption has happened, nor are the diagnostics useful if you do somehow figure out that a block is problematic. This has happened to me several times over the decades as hard drives have lost the plot, or due to bugs. Backing up a corrupted file gets you nonsense in the backup. (A standard btrfs demo is deliberately corrupting the filesystem and then showing recovery. You can't do that with ext4 since it has no idea if what is there is correct in the first place.) You can use tools like LVM and md as a layer underneath ext4 to provide some resiliency, but there is a learning curve and two sets of tools to work with. Changing around disk/partition sizes isn't much fun with them.