1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Storage Installing Windows with two M.2 drives fitted?

Discussion in 'Hardware' started by mikemorton, 15 Oct 2020.

  1. mikemorton

    mikemorton Active Member

    Joined:
    5 Nov 2010
    Posts:
    766
    Likes Received:
    25
    I have two Sabrent M.2 drives all ready for my new Ryzen build.

    It would be great to install them both now as my motherboard is still out of the case, as they are a little bit fiddly to fit.

    It used to be that the best advice when having two or more storage devices was either to either unplug the second drive or not fit it at all until Windows had been successfully installed on the main drive.

    Is this still the case? Would Windows start dumping files on the second M.2 drive?

    I'd love to fit both drives now if it's not an issue.
     
  2. yuusou

    yuusou Well-Known Member

    Joined:
    5 Nov 2006
    Posts:
    2,412
    Likes Received:
    506
    You can leave both drives in. The installer will just put the bios-style mbr on both drives but the efs partition will only be on one.
     
  3. mikemorton

    mikemorton Active Member

    Joined:
    5 Nov 2010
    Posts:
    766
    Likes Received:
    25
    Excellent news - thanks!
     
  4. Bloody_Pete

    Bloody_Pete Technophile

    Joined:
    11 Aug 2008
    Posts:
    7,559
    Likes Received:
    593
    It does mean in the second drive dies it'll corrupt your boot though...
     
  5. mikemorton

    mikemorton Active Member

    Joined:
    5 Nov 2010
    Posts:
    766
    Likes Received:
    25
    Ah, OK that's worth knowing - ta
     
  6. yuusou

    yuusou Well-Known Member

    Joined:
    5 Nov 2006
    Posts:
    2,412
    Likes Received:
    506
    Why would it corrupt boot? If you're still in bios mode (which I doubt on a board with NVMe), windows installs a copy of MBR on all drives. If in EFI mode (all modern systems), windows creates an EFI partition on the primary drive or uses a pre-existing one. If that EFI partition corrupts then yes, your boot will corrupt, but seeing as OP is clearly exclusively using Windows, chances are Windows and EFI are on the same drive, so everything will pooper out.
     
  7. adidan

    adidan Guesswork is still work

    Joined:
    25 Mar 2009
    Posts:
    16,315
    Likes Received:
    2,918
    I've always found it can save potential headaches later on if I install with just the boot drive connected then add any other drives later.

    Works for me anyway.
     
  8. Bloody_Pete

    Bloody_Pete Technophile

    Joined:
    11 Aug 2008
    Posts:
    7,559
    Likes Received:
    593
    Not my experience at all, in fact my work colleague did it at the beginning of the year with an external drive, the system then refused to boot without the external drive attached... Its a well know thing to happen.
     
  9. Spraduke

    Spraduke Lurker

    Joined:
    23 Sep 2009
    Posts:
    528
    Likes Received:
    99
    Interesting, I've never had an issue with corrupting windows when replacing second drives and I've never unplugged them during windows install. Just pick only 1 drive/partition to install onto.
     
  10. Gareth Halfacree

    Gareth Halfacree WIIGII! Staff Administrator Super Moderator Moderator

    Joined:
    4 Dec 2007
    Posts:
    13,994
    Likes Received:
    2,946
    It's not only a thing, it's a thing that Microsoft itself doesn't know how to avoid. Like, it prevents you from installing Windows 10 updates until you remove your USB drives 'cos otherwise it might accidentally move the bootloader to one and soft-brick your PC. No, really.
     
    wyx087 and Bloody_Pete like this.
  11. liratheal

    liratheal Sharing is Caring

    Joined:
    20 Nov 2005
    Posts:
    11,909
    Likes Received:
    1,363
    ...That would explain so much.
     
  12. spolsh

    spolsh Active Member

    Joined:
    4 Feb 2012
    Posts:
    940
    Likes Received:
    240
    Disable one of the m2 drives in BIOS, then enable after install ? That's a thing surely ?
     
    Bloody_Pete likes this.

Share This Page