The original post: /r/datahoarder by /u/LeviAEthan512 on 2024-12-27 13:57:23.

From what I can tell, it’s all 99% good. Just some oddities that I think are inconsequential, but I’m new to this so I’d like to make sure.

The programs I used are Crystal Disk and Quick Hash.

I pasted 278 copies of the largest single file in my PC to see if they all have the same hash, which should tell me beyond a doubt that all files really are fully written and not overwritten. Right?

So the hashes are the same across all copies, except for two ranges, and both ranges have the same hash. Most files hashed to 6B7… but some hashed to B01… Those B01 files are all in two contiguous ranges, 15-35 and 183-192. I named all the files name(1), name(2) etc etc. Any possible reason for this? Or is it perhaps just one bit off that no one cares about?

Based on time modified, the B01 files were copied from my SSD in the HDD, and the 6B7 files were copied from the HDD back into itself. Is this sort of copying, same drive to same drive, known to flip a bit somehow?

As for Crystal Disk info, again all looks good, Just some… ‘metadata’ type stuff is different from expected.

All my drives follow some revision of ACS standards, but one of these new ones is “ATA/ATAPI-7 | ----”. I’ve read these are basically the same, but is there any information that can be gleaned from the difference? Like maybe, was this ATA drive made in a different country, where the custom is to mark it as ATA instead of ACS? Also, the transfer mode is “---- | SATA/600” instead of “SATA/600 | SATA/600” that I’m used to. I assume this is a minor error in whatever records the drive’s characteristics. But is it a sign of worse to come?