Using 3TB GPT HDD as external drive, dynamic partition "invalid"?

AnonymousDeity

Honorable
Feb 3, 2015
8
0
10,510
Hi!

I've had an interesting problem. I have a 3TB drive that I've been using as internal storage on my desktop PC for several years, but I always had it formatted with MBR, so windows only showed 2.1 TB or something like that. Recently I bought a new mobo w/ UEFI so I could reformat to GPT and use the full 3TB.

Well, stupidly, my laptop that I use at university doesn't recognize GPT drives, no UEFI :( So when I plug my drive in, I see no volumes in explorer and disk management shows 3 empty partitions, all labelled "invalid", which makes me very sad. The help I'm looking for would be on how to possibly use this drive on this laptop without data loss. I have only 1.3TB worth of data on it, but unfortunately in my thoughless storage greed I may have made my life harder for the next 8 months.

Thanks in advance for any help I get!

Edit after getting answer: thanks for the reply! I was afraid I was just knackered, but I've had some pretty hail Mary solutions come from THF, so it was worth a shot. Unfortunately I'm at school, having discovered this upon attempting to use the drive.

Thanks anyways Colif!
 
Solution
MBR can only access 2.1tb of the drive, it cannot see anymore. You know that.
GPT disks have a dumbie MBR so that Legacy OS don't see them as blank and wipe them. I thought it would see it as one big partition, not 4...

You cannot swap between GPT & MBR without a format. You also can't have mbr partitions on a gpt disc.

if you want to use it at school you will have to go without the extra space on hdd and format it mbr. Hope you worked this out before getting to school as backing up the data will be difficult otherwise. Just buy another drive and use that at school.

Colif

Win 11 Master
Moderator
MBR can only access 2.1tb of the drive, it cannot see anymore. You know that.
GPT disks have a dumbie MBR so that Legacy OS don't see them as blank and wipe them. I thought it would see it as one big partition, not 4...

You cannot swap between GPT & MBR without a format. You also can't have mbr partitions on a gpt disc.

if you want to use it at school you will have to go without the extra space on hdd and format it mbr. Hope you worked this out before getting to school as backing up the data will be difficult otherwise. Just buy another drive and use that at school.
 
Solution