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While doing some disk management operations with 4 SSD drives on my windows-10 machine, I read some Microsoft documentation 2022-01-10 that says "dynamic disks" (i.e. Disk Management's "spanned", "striped", "mirror", "raid 5" volumes) "have been deprecated and we don't recommend using them anymore" 2022-01-10 article.

The article talks about converting to "basic disk" but in windows-10 there is no such option in Disk Management GUI (is the term "basic disk" a windows-server only term?).

In Windows-10 Disk Management when you right-click an unallocated harddrive you get the options "Simple Volume", "Spanned Volume", "Striped Volume", "Mirrored Volume", "Raid 5 Volume" (option is gray because apparently the option for "Raid 5 Volume" is only available in windows-server according to what I have).

Is the technical term "basic disk" the same as "simple volume" in windows-10 Disk Management?

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  • “When all volumes on the disk have been deleted, right-click the disk, and then click Convert to Basic Disk”
    – Ramhound
    Commented Jan 13, 2022 at 2:00
  • Right. I read that part in the manual. In windows 10 there is no option for "basic disk" and so I'm asking this question. In my question I listed the options I get and none of them are "basic disk". Commented Jan 13, 2022 at 3:25
  • Yes; There should be. The reason your not getting the option is because the drive is unallocated
    – Ramhound
    Commented Jan 13, 2022 at 12:42

2 Answers 2

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"Basic disk" refers to the whole disk – it means the disk uses standard MBR or GPT partitioning (as opposed to Microsoft LDM), and therefore can only contain simple volumes.

The opposite is "Dynamic disk" which uses the LDM partitioning style (Logical Disk Manager; the Windows equivalent of LVM for Linux) and can contain spanned/mirrored/striped volumes in addition to simple volumes.

However, if you only have simple volumes, that doesn't automatically mean they're on a "Basic" MBR/GPT disk – it could still be in "Dynamic" LDM format.

As this is a disk-level property, not a volume-level one, it will be shown in disk information to the left of physical partitions:

Screenshot of the disk information block. It says: "Disk 0; Basic; 223.56 GB; Online"

Right-clicking that area will offer you an option to convert a Basic MBR disk to Dynamic LDM, or the other way around (as long as it has Simple volumes only).

Screenshot of the same block with its right-click menu. It has options "New Spanned/Striped/Mirrored/RAID-5 Volume", "Convert to Dynamic Disk" and "Convert to MBR Disk", all of them grayed out.

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  • i was right clicking the GUI where the screenshot shows "100 MB" and this brings up a menu with the five options i listed. the trick as this solutions says is to click the part that says "Disk 0" and then you get a new menu with the "Convert to Dynamic Disk" or "Convert to Basic Disk". Commented Jan 14, 2022 at 1:10
  • quick note: my disks are USB drives and so when you try to do "Convert to Dynamic Disk" or try to create a spanned/striped/mirrored/raid-5 then you get an error dialog "Operation is not supported" (according to superuser the operation is not supported for USB/external disks and only for internal disks). Commented Jan 14, 2022 at 1:13
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The two terms are quite different. A basic disk can contain multiple simple volumes.

Basic and Dynamic Disks are the two formats of disks on Windows.

The term basic disk refers to a disk that contains partitions, such as primary partitions and logical drives, which in turn are formatted with a file system to become a volume for file storage. Basic disks provide a simple storage solution.

The other disk format is the Dynamic. Dynamic disks allow more evolved architecture, such as volumes that span multiple disks (spanned and striped volumes) and fault-tolerant volumes (mirrored and RAID-5 volumes). Like basic disks, dynamic disks can use the MBR or GPT partition styles on systems that support both.

A simple volume is a portion of a physical disk that functions as though it were a physically separate unit. A simple volume can consist of a single region on a disk or multiple regions of the same disk that are linked together.

The simple volume can only be created on a dynamic disk, while the primary partition can only be created on a basic MBR or GPT disk.

When extending the simple volume to include unallocated space on the same disk it remains a simple volume.

When extending a simple volume to include unallocated space on other disks on the same computer, this creates a spanned volume.

References:

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