What are these drives and what are they used for? I'm looking into upgrading my motherboard and don't know if I'll need all of those drives then.

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    WINRE is the Windows Recovery Environment. PBR isn't a standard drive, you will actually have to tell us, what it is used for. – Ramhound Feb 29 '16 at 14:23
  • @Ramhound All of these drives where installed when I bought my computer so I have no idea :/ – LukaxH Feb 29 '16 at 14:25
  • I did a simple google search on PBR_DRV its purpose is well documented. – Ramhound Feb 29 '16 at 14:29
  • It's worth mentioning those are partitions not physical drives. – qasdfdsaq Feb 29 '16 at 14:56

As Ramhound noted, WINRE_DRV is a partition for Windows Recovery Environment.

I suspect PBR_DRV is a partition associated with the Lenovo One-Key Recovery software. It may be other vendors also supply something based on the same third-party software.

Both of these are probably relatively small partitions that are normally hidden from end-users. You should probably leave them alone unless you have, and know how to use, a full set of DVD/CD media to reinstall your operating system, drivers and vendor-supplied utilities.

Neither of these need "optimization" or defragmenting.

  • Its Dell but close enough, it contains the factory image, for restoration purposes. – Ramhound Feb 29 '16 at 14:29
  • When I upgrade my motherboard should I install this disc or should use throw it away? – LukaxH Feb 29 '16 at 14:31
  • @Ramhound Accidently hit enter button :P – LukaxH Feb 29 '16 at 14:34
  • @LukaxH - Install what disk? Neither partition is required for Windows to function. – Ramhound Feb 29 '16 at 14:35
  • @Ramhound The pbr_drv one – LukaxH Feb 29 '16 at 14:35

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