I have never experienced the problem for myself. However, I would apply the latest BIOS update. My understanding is that, once the BIOS writes to the drive, it won't touch it again as long as it sees the backup copy. My only concern would be whether the backup was written to the end of the drive, past the end of the last partition, or at the 32MB point. If the latter, then I would expect to see file corruption. If I were you, I would use a disc editor to search the drive for BIOS related text strings, as described in the referenced thread. Start at the end of the drive and search backwards.
You could use either of the following freeware tools:
HxD - Freeware Hex Editor and Disk Editor:
DMDE (DM Disk Editor and Data Recovery):http://softdm.com/download.html