Tried to convert gpt and now DATA MISSING!

Neol

I was trying to change my secondary data drive from MBR to GPT so I could have more partitions. I used diskpart and typed convert gpt. It gave me an error saying: "The specified disk is not convertible.

CD-ROMs and DVDs are examples of disks that are not convertible." It's a SATA SSD, not a DVD lol.

But now, even though it failed, the drive letter is gone and the disk shows as "Not Initialized."

Did DiskPart half-bake the conversion and wipe my partition table?

How do I get my files back if I can't even "select" the volume anymore?

LeoF_225

Neol This usually doesn't mean your files are gone. More often the partition metadata got messed up during the GPT conversion, so Windows no longer knows where the filesystem starts.

The biggest mistake now would be creating new partitions or formatting anything "to see if it helps." Every write reduces your recovery chances.

PeterGibson

Neol One question though:

How exactly did you "convert GPT"?

Windows Disk Management?

diskpart?

A third-party partition manager?

The recovery path depends on whether the partition table was rewritten cleanly or partially overwritten.

LeoF_225

Neol If the disk capacity still looks correct in Disk Management, that's actually a decent sign.

It often means the data area is still there, while only the partition information became unreadable.

MatthewJones

Neol Also... if Windows suddenly offers to format the drive, that's basically Windows saying:

"I have no idea what's going on, but maybe deleting everything will help."

Politely decline.

CosmicRaccoon777

LeoF_225 Second this.

I had something very similar after converting an old HDD. Disk showed as unallocated but almost everything came back after rebuilding the partition table first. Didn't even need file recovery in the end.

MatthewJones

CosmicRaccoon777 Every time someone says "I clicked Convert and now everything disappeared," an SSD silently loses another gigabyte of lifespan from stress.

Seriously though... stop clicking random repair buttons.

CleverPelican147

PeterGibson Following because I never actually understood the difference between rebuilding a partition table and recovering files. Learned something already.

CosmicRaccoon777

LeoF_225 Yep.

Before trying file recovery, I'd check whether the original partition can be detected again. Restoring the partition structure is usually faster than recovering millions of individual files.

PeterGibson

CosmicRaccoon777 Small correction.

Not every partition recovery tool is read-only during analysis. People should make sure they're scanning first, not immediately writing a rebuilt partition table before confirming the detected layout is correct.

LeoF_225

PeterGibson Good point.

Verification matters. If the recovered partition size, filesystem type, and starting sector all look consistent with the original layout, then writing the partition table becomes much safer.

CleverPelican147

MatthewJones 😂 That dialog has fooled so many people.

I always wondered why everyone says "don't format" first. Makes sense now.

CosmicRaccoon777

Neol Can you post a screenshot of Disk Management?

Specifically:

Does the drive show as Unallocated?

RAW?

GPT or MBR?

Does the capacity still match the physical disk?

That'll narrow things down a lot.

PeterGibson

CosmicRaccoon777 And if you still have the exact conversion steps, don't leave anything out.

Even details like whether the conversion stopped halfway or whether Windows rebooted unexpectedly can make a difference.

LeoF_225

Neol One more thing:

If the data is important, avoid installing recovery software onto the affected drive. Install it on another disk or boot from another system to minimize additional writes.

MatthewJones

LeoF_225 Future me reading threads like this:

"Backup? Nah."

Five minutes later:

"So... about that recovery software..."

We've all been there.