Windows 10: GPT vs MBR speed

The merits of GPT partitioning are well documented and discussed.

But does O/S disk partitioning under GPT best MBR definitively in actual usage - apart from boot?

Comment from knowledgeable techs or those with first-hand comparison of the two schemes is invited.

:)

 

GPT vs MBR boot time and R/W speeds & IOPS?

Does GPT have an advantage over MBR for both SSD/HDD in terms of boot time and R/W speeds & IOPS?

 

GPT vs MBR boot time and R/W speeds & IOPS?

Not really. UEFI booting from GPT might be slightly faster but I'm sure it's a negligible improvement. It's more of a feature thing. GPT supports more than MBR which is why it's advantageous to use it. I use it because it's the direction partition tables are going and is required to boot via UEFI iirc but, it allows for more partitions and bigger disks.

 

clone MBR HD to bootable GPT partition?

Hi,

1. You cannot convert mbr to gpt without data loss. otherwise, you can follow directions here:

FROM WINDOWS RECOVERY CONSOLE:

To change a master boot record disk into a GUID partition table disk using a command line

• 
  Back up or move the data on the basic master boot record (MBR) disk you want to convert into a GUID partition table (GPT) disk.
  
• 
  Open an elevated command prompt (right-click Command Prompt, and then click Run as Administrator) and type diskpart. If the disk does not contain any partitions or volumes, skip to step 6.
  
• 
  At the DISKPART prompt, type list disk. Make note of the disk number you want to convert.
  
• 
  At the DISKPART prompt, type select disk <disknumber>.
  
• 
  At the DISKPART prompt, type clean.
  

2. I'd suggest converting your vista drive to a virtual machine, load that up on your windows 10 system and use a program like virtualbox to run it.