Hello all, I have a 1TB usb external drive used mostly for backup, and occasionally to run virtual machines stored on it. It is a Lacie Porche model of roughly 3-4 yrs and it has a Hitachi disk drive in it. It has 5 partitions of ~200gGb each. HDSentinel says it has been powered on for 212 days... which could be right, as it not on everyday, and says it is at 100% health status. Since a few days it is consistently remounting in read-only mode when a large file is copied onto it (1gb+ files), meaning the copy fails. Small files do not seem to cause any problem. A CD image iso copies ok. Running fsck shows no errors. But badblocks shows plenty of bad blocks. So far all of the bad blocks seem to be on a single partition with reiserfs. (admittedly I have not checked the disk completely - just that the first 30% of the other partitions (ext4) show no bad blocks, where as the reiserfs one shows badblocks very early in the check. Badblocks checks take a long time - btw, I don't remember why this one partition is reiserfs, and others ext4?) IMHO 212 days is not a lot! Could there be other reasons than "really badblocks" thats causing this problem? I would think that a badblock check is filesystem independent. OR is there any reason why a partition with reiserfs would be particularly prone to developing badblocks? Also any recommendation for a good 1 Tb USB external drive (powered is fine, it does not have to be portable). Cheers Daniel. PS: Lev if you read this, as I recall you bought a similar external drive shortly after I bought mine. Is yours still running good?