Basically, I have a drive that was recovered, And I know chkdsk isn't enough. I used to have some old dos software I used to read and write to ever sector on the drive multiple times in order to check the drive integrity.

What's the best / latest equivalent of that?

HDDSCAN will do a surface scan & show you access times & how many bad sectors the drive has.

Loki

AIUI, software that runs under a multitasking OS cannot always lock a drive for its own use. Furthermore, if the CPU is performing intensive background jobs, then the access time results may be skewed.

Instead I would suggest MHDD which runs under DOS. It does essentially the same things as HDDScan, plus a whole lot more.

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A backup a day keeps DR away.

Thanks so much, I think it actually have have been MHDD. I looked at that earlier and it didn't look familiar but after reading the capabilities I'm thinking that had to have been the one.

That description sounds like you might be remembering SpinRite (which I wouldn't use personally).