yeah the default badblocks is four read/write passes, which seems excessive to me. I do the option for a single "random" pass write/read pass and then it only takes a day or two.Took much longer than I expected. badblocks alone takes 6.4 days to finish.
Code:# badblocks -b 4096 -ws /dev/sdc Testing with pattern 0xaa: done Reading and comparing: done Testing with pattern 0x55: done Reading and comparing: done Testing with pattern 0xff: done Reading and comparing: done Testing with pattern 0x00: done │Reading and comparing: 94.46% done, 152:11:08 elapsed. (0/0/0 errors)