Teracopy

TeraCopy Portable is a portable freeware file-copying utility that tries to copy a file several times and if it fails, it skips the file and continues. TeraCopy also copies files faster than the built in Windows copy system by “dynamically adjusting buffers to reduce seek time”. Thus, making your backup process faster and more reliable. TeraCopy Portable enables you to copy and/or move files within Windows in a much faster way – an improvement you'll be especially grateful for when dealing with several gigabytes of data. TeraCopy has some other great features such as the ability to pause and resume transfers, shell intergration and a interactive file list that shows the failed file transfers so you can fix them later.