Massive Hard Drive issue

I am dealing with a Seagate BarraCuda 2 TB. This drive isn't even a month old—hardly any usage at all. I was in the middle of installing macOS and decided to disconnect the drive temporarily just to swap in a DVD-RW drive. Honestly, the reasoning behind it doesn't really matter. Anyway, once the OS installation was finished, I reconnected the hard drive and opened up a partition manager. Suddenly, macOS pops up a notification demanding that I format the hard drive. It's strange, because the partition manager correctly identifies the full 2TB capacity. However, when I check the BIOS, it claims the drive is only 1TB :O

Does this imply that the drive has most likely failed?

swiftmoose20 said:It’s a Seagate BarraCuda 2 TB. Honestly, the drive isn't even a month old. I was trying to install macOS and ended up disconnecting the drive just to plug in a DVD writer. Not that it matters why. Anyway, once macOS was installed and I plugged the hard drive back in, I opened a partition manager, and suddenly the OS tells me I need to format the hard drive. The partition manager sees the full 2TB capacity, but when I check the BIOS, it claims the drive is only 1TB. :O

Does that mean the drive probably kicked the bucket?

It's possible. Did you maybe bump the hard drive or jiggle it while you were installing macOS or something like that?

Larry Murphy83 said:Is there any chance you bumped the Hard Drive while installing macOS—just an accidental nudge or something similar?

I don't believe so—though I should mention it was completely powered down at the time. I only connected it after the macOS installation was finished. I actually tested it on another computer just now, and the result is the same: it shows 1TB, or more specifically, 1000.2 GB.

I was just having a conversation with a technician—an old hand at this sort of thing—and he mentioned he’s encountered similar situations before. It seems that initially, the drive displays a capacity of 2 TB, but after a certain amount of time passes, it suddenly drops to 1 TB. Is it possible that we are looking at a complete scam? Could it be that these drives, which are marketed as 2 TB, actually possess only 1 TB of actual storage from the start? If that is indeed the case, then we have truly reached rock bottom.

swiftmoose20 said:I don't think so, but I mean, it was powered off. I only hooked it up after I finished installing macOS. I just tried it on another computer, and yeah, it still shows 1TB—well, specifically 1000.2 GB.

Hmm, honestly, you might as well just take it back and return it. I don't really have anything else to say. It's just impossible for it to read correctly one second and then fail the next; something isn't adding up here. There's a chance it could be a mistake on your end.

Like, is there any chance you accidentally split it into two partitions, like a C and a D drive? That might be why it's showing up that way.

It’s possible, but I wouldn't count on it

That's why I usually suggest just sticking with WD (Western Digital) when you're looking at Hard Drives. Honestly, their Black or Red lines are probably your best bet. They cost a bit more, sure, but they're tougher and just more reliable overall. They don't tend to let you down as much as the cheaper stuff might.

There was only one partition visible. I just ran the hard drive capacity restore tool, and now it’s showing a factory capacity of 2TB, yet it reports only 1TB as available. If I proceed with this restore and it actually manages to reclaim the missing space, will my existing data remain intact—or is everything going to be wiped out? Does anyone know? This is critical because absolutely everything important is stored on this drive.

edit: It just occurred to me—I was previously running a 64-bit version of macOS, but now I'm on 32-bit. Could that possibly be part of the issue? Though, I find it hard to believe.

swiftmoose20 said:There was only one partition on there before. I just ran the HDD capacity restore tool and it's telling me the factory capacity is 2TB, even though it's only reporting 1TB right now. If I go ahead with the restore and it actually brings back that missing space, will my old data still be there, or am I looking at total data loss? I really need to know because everything important is on that drive.

It’ll wipe everything. Once you hit restore, it clears the whole thing and puts it back to how it was when it left the factory.

Larry Murphy83 said:Why bother? If you take it to a repair shop, they’ll just wipe everything and return it to its factory state anyway.

I managed to resolve it using HDD Capacity Restore—though I am still conflicted. Should I back up all my data elsewhere before dropping it off at a service center? It is a dilemma, really. How would I even explain the situation to them? They would likely refuse to honor the warranty if they realize what happened.

What are you even talking about?
You want to install Windows 7 on a new 2 TB Seagate BarraCuda 2 TB?
That isn't the issue. The real problem is if you don't know how to configure the BIOS.
If it fails once, it won't work even if you install it on another computer and move the drive back. Jesus.
Sometimes you need to switch to IDE mode or something else depending on the BIOS settings. AHCI, or whatever else it offers... I don't recall every single option off the top of my head. You have to check.
If you don't know, find someone who does. Stop messing with the Hard Drives; you might actually break one by moving it around. One wrong bump and it's trash.

John Turner34 said:What exactly are you getting at here?
Are you really trying to install Windows 7 onto a new 2 TB drive?
That shouldn't be an issue—provided, of course, that you know how to navigate the BIOS settings properly.
If it fails once, don't bother trying to install it on a different computer just to move it back; it won't change the outcome. Jesus.
Sometimes you have to toggle the IDE mode or adjust some other setting depending on what your specific BIOS offers—AHCI, or something else entirely... I can't recall every single option off the top of my head, so one would have to check.
If you aren't sure, please, just ask someone who is. Don't put unnecessary strain on that Hard Drive; you might actually damage it by constantly moving it around... one wrong bump and it's finished—then you're just throwing money away.

Please, let's not talk nonsense and actually focus on what I wrote earlier. Initially, the system recognized the full 2 TB capacity of the drive, but after I installed the new macOS, both the OS and the BIOS reported only 1 TB. Fortunately, I managed to resolve the discrepancy using an HDD capacity restore tool.

Wait, I think you gotta set it to AHCI mode... or maybe IDE? I don't know, I think I read somewhere that it works better if you switch it over.