It is showing it part of a RAID array. Really need to swe the rest od Disk mgmt and possibly a Speccy ahowing partitions on that disk.
Thank you. Yes the disk ins in a USB Dock as I had to use it as a backup disk with 4TB.
Do you mean this as a Disk Map ?
Yes, what is on the top is the disk list. Below that disk map.
How to Post a Screenshot of Disk Management
OK, Looking at Disk 5. P: it shows only a single volume 2047.98 GB. There is no unallocated space in it. So it is only a 2TB disk and not a 4TB disk.
If you so desire, you may connect it directly to a SATA port in the motherboard and confirm.
A dock usually specifies the total capacity it can handle or per bay capacity. Ensure that you keep to the specified capacity.
For example if it says 4TB per bay and you put a 8TB disk in it, then all data beyond 4TB will wrap around and start writing from the beginning of the disk and as a consequence that disk will become inaccessible (since the excess data will overwrite the MBR and subsequent sectors that may hold the partition configuration data.)
Last edited by jumanji; 17 Dec 2023 at 23:40.
Some times disk dont pass tests in the factory, so example a 2TB drive with two disks inside get an error on one of the head.. Then with firmware lock they disable one and it get half it's capacity of 1TB.. and they relabel the disk and sells it as a 1TB disk.
So a 4TB disk can become a 2TB disk.... BUT... then it should be showing 1863GB in the disk manager.. and it dont.. it shows 2047GB and GB in windows is GiB.. so in GB that is a 2.2TB partition.. and the MBR limit is 2.2.. Now the disk is formatted in GPT.. But.. it is in a USB enclosure... There is some USB enclosures that has a limit of 2.2..
So the recommendations in the thread to test the disk on a Sata port seems to be a good idea to rule out an USB enclosure limitation
The 2047 number is just wrong to be a 2TB disk.
I got 2 WD MyBook 4TB USB drives a few years ago, packages were marked as usable on PC and Macintosh, were factory-formatted as exFAT. Mac OS X can read NTFS but needs another program installed to write to it, don't know about the newer macOS yet.
My NAS connected to my Wireless Router has 2 x 2TB drives attached for a total of 2TB storage, set as RAID 1 mirroring. RAID 0 would give 4TB striping but if one drive fails everything is lost. Mirroring makes both drives the same.
Yes, I noticed the discrepancy but I assume that the dock is responsible for it. The OP can put a known 2TB disk in the dock and check whether it reads it as 1863 GB or 2047 GB. Just an academic exercise
Very old docks - only MBR days - do have a 2TB limitation. After GPT, I don't think any present day docks has a 2 TB limitation.
I was writing my post when you posted your post #15, so i never saw that post before i posted my post #16.Yes, I noticed the discrepancy but I assume that the dock is responsible for it. The OP can put a known 2TB disk in the dock and check whether it reads it as 1863 GB or 2047 GB. Just an academic exercise
Very old docks - only MBR days - do have a 2TB limitation. After GPT, I don't think any present day docks has a 2 TB limitation.
and when i saw your post after i posted mine.. i first thought of edit my post.. But i didn't out of laziness.*lol*
True.. only old external enclosures had that limitation before GPT as you saying.. But we do not know how old the enclosure is that OP is using
So put the 4TB disk in the computer on one Sata port.. bot in to bios and check the disk size and no windows settings will be effected.. or try the 4TB drive in a newer usb enclosure
academic exercise.. i like the expressionand as we all know the doctors is saying exercising is healthy. *lol*
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