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I have several Local Hard Drives such as C:, D:, F: and so on. Also several CD rom Drives.

I want to know where windows store these data (Drive Letters and Drive Types).

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Drive letters can be found here:

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Thanks, But What about Drive Types? – Stranger Aug 4 '11 at 8:24
Thats in the Data column of the keys. – cularis Aug 4 '11 at 8:29
But it is in Binary, how to translate them? which means local hard drive? Which means CD-Rom? – Stranger Aug 4 '11 at 9:25
They are in Hex IIRC – surfasb Aug 5 '11 at 6:51
Only hard-drives are in hex, other types have long, variable-length Unicode strings. If you open one in the Edit Binary Value dialog, you’ll see them. A CD/DVD will be something like \??\IDE#CdRomSony…, a flash-drive/memory-card might say _??_USBSTOR#Disk&Ven_SanDisk&Prod…, and a hard-drive will have a much shorter string (~12 bytes) of binary data that is not human-readable. You can also use DevCon and DevManView to get a list of hardware that is or has been attached to the system. – Synetech Mar 21 '14 at 16:37

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