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4TB on MBR?

post #1 of 24
Thread Starter 
I just got a brand new 4TB external drive from Hitachi and it was initialised and preformatted with NTFS, and i only needed to assign letter. It was ready to go. But there's a lot talk of drives with more than 2TB storage needing GTP to function correctly, so i went on the rives properties on the device manager, populated the drive and it listed MBR being used. Will that result in any issues on the future? I needed to make sure it is setup correctly before i start filling it up.
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post #2 of 24
you will be unable to boot from it. If your OS is on another drive, your fine.
post #3 of 24
You can convert MBR to GPT at any time, so I wouldn't worry before you run into problems. If you decide to use it as a boot drive some day, you should probably convert it to GPT, and make an EFI partition at the start of the drive that's about 500MB to future proof the drive.
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post #4 of 24
Thread Starter 
no it is just for data, i'm booting of an SSD, and never plan on booting from large drives. So you say MBR should be fine? Cause i used to hear people barking about converting drives that are more than 2TB to GPT. I know i can do it anytime, but since there's data loss happening on the conversion, i would need to move the data elsewhere and then move them back when conversion is complete and that's a lengthy process.

So if there's no booting to be performed is there no reason to consider GPT partition, now that the drive is fresh, and i still have the opportunity to turn it with as less fuss as possible?
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post #5 of 24
Quote:
Originally Posted by therock003 View Post

no it is just for data, i'm booting of an SSD, and never plan on booting from large drives. So you say MBR should be fine? Cause i used to hear people barking about converting drives that are more than 2TB to GPT. I know i can do it anytime, but since there's data loss happening on the conversion, i would need to move the data elsewhere and then move them back when conversion is complete and that's a lengthy process.

So if there's no booting to be performed is there no reason to consider GPT partition, now that the drive is fresh, and i still have the opportunity to turn it with as less fuss as possible?

If formatting a new drive I would use GPT just for forward compatibility, but if your already using it then no, there is no real reason to switch. as said above, you can also convert it later, not without fuss but with out too much of a problem.
post #6 of 24
Just pay attention that it's aligned. If the partitions aren't aligned you will experience some performance regressions
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post #7 of 24
MBR = smaller than 2TB partitions, up to 4 main partitions max

GPT = larger than 2TB partitions, up to 128 main partitions max
post #8 of 24
Thread Starter 
So for one GPT offers more partitions, although I'm not a partitions kind of guy, especially on data drives. But i don't think MBR offers 2TB as maximum partition size. Where is everybody getting this information. I read on an article it can go up to 4, and my external drive proves that to be correct. Any other possible benefits for GPT comes to mind, to anyone who has used it?
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post #9 of 24
Quote:
Originally Posted by therock003 View Post

So for one GPT offers more partitions, although I'm not a partitions kind of guy, especially on data drives. But i don't think MBR offers 2TB as maximum partition size. Where is everybody getting this information. I read on an article it can go up to 4, and my external drive proves that to be correct. Any other possible benefits for GPT comes to mind, to anyone who has used it?

I'm using it. again, the 2TB limit is only if you wish to boot off it. otherwise, your fine. the partitions is the biggest real advantage.
post #10 of 24
Quote:
Originally Posted by therock003 View Post

So for one GPT offers more partitions, although I'm not a partitions kind of guy, especially on data drives. But i don't think MBR offers 2TB as maximum partition size. Where is everybody getting this information. I read on an article it can go up to 4, and my external drive proves that to be correct. Any other possible benefits for GPT comes to mind, to anyone who has used it?
With 512 byte sector and 512 byte emulation a MBR drive has a 2.2TB partition size limit.

With a 4096 byte advanced format drive you can have up to a 16TB partition size.

If your drive is detected as 4096 byte sector then you should be able to have a 4TB partition with MBR. If it is not then you have to use GPT to have a 4TB partition.

More info on GPT: http://en.wikipedia.org/wiki/GUID_Partition_Table

Also, "Importantly, it also contains a CRC32 checksum for itself and for the partition table, which may be verified by the firmware, bootloader and/or operating system on boot. "

Thus a little better data integrity.
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