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  1. #1
    Using an External Backup drive for Apple and PC

    Member Since
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    Using an External Backup drive for Apple and PC
    I have a Pee Cee and an Apple and would like to use a common ext. HD to back them up.
    I am assuming that as long as I format each Partition appropriately, that it should work.
    My question therefore is how would I physically hook the two computers to the HD? Would I have to connect each one when I backed up?
    Cheers Al
    iMac -Sierra- 27"Retina 5K, Late 2015, 3.2 GHz, i5, 8 GB 1867 MHz DDR3,
    iPhone 3Gs,
    Touch 32 gb, gold, gen 7

  2. #2
    Using an External Backup drive for Apple and PC
    ferrarr's Avatar
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    May 21, 2012
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    Pawtucket, RI, US
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    Quote Originally Posted by flyboyy View Post
    My question therefore is how would I physically hook the two computers to the HD? Would I have to connect each one when I backed up?
    Yes, the drive would need to be connected when you want to backup, unless you set up a networked attached storage (NAS) device?
    -- Bob --
    Please backup. Everything has a life cycle, unexpected and warning free. Nothing will last as long as you want it to.

  3. #3
    Using an External Backup drive for Apple and PC

    Member Since
    Jul 03, 2014
    Location
    Courtenay, BC Canada
    Posts
    164
    Your Mac's Specs
    iMac -Sierra- 27"Retina 5K, Late 2015, 3.2 GHz, i5, 8 GB 1867 MHz DDR3, 250 GB SSD
    Sorry ferrarr I didn't word that properly. I use wired hookups and was wondering what wires I would use to hook the two computers up so that I didn't have to disconnect one to hook up the others?
    Cheers Al
    iMac -Sierra- 27"Retina 5K, Late 2015, 3.2 GHz, i5, 8 GB 1867 MHz DDR3,
    iPhone 3Gs,
    Touch 32 gb, gold, gen 7

  4. #4
    Using an External Backup drive for Apple and PC
    ferrarr's Avatar
    Member Since
    May 21, 2012
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    Your Mac's Specs
    L2014 Mac mini macOS Mojave, iPhone 8+ iOS 12, 12.9" iPad Pro 1 iOS 12, Pencil 1
    The drive should only be connected to one PC at a time. If both PC's attempted to use it at the same time, would probably be bad.
    -- Bob --
    Please backup. Everything has a life cycle, unexpected and warning free. Nothing will last as long as you want it to.

  5. #5
    Using an External Backup drive for Apple and PC
    chscag's Avatar
    Member Since
    Jan 23, 2008
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    Your Mac's Specs
    2017 27" iMac, 10.5" iPad Pro, iPhone 6s+, iPhone 7+, Numerous iPods, Mojave
    Not a great idea to store backups from the PC and Mac on the same external hard drive regardless how it's partitioned. Lose the drive, and you'll lose both backups.

  6. #6
    Using an External Backup drive for Apple and PC
    Rod Sprague's Avatar
    Member Since
    Jun 12, 2011
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    Yes that would be too great a risk. Just partitioning them differently increases the possibility of corruption although in theory it should be fine.
    As for connecting the same external drive to two different devices, i think that would cause all sorts of problems.
    Ideally you need two separate external drives each one formatted for and connected to the device it is scheduled to back up.
    I used to be conceited but now I'm perfect.

  7. #7
    Using an External Backup drive for Apple and PC
    Slydude's Avatar
    Member Since
    Nov 16, 2009
    Location
    North Louisiana, USA
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    Your Mac's Specs
    2.8 GHz 2008 MacBook Pro 10.11, 8 GB mem, iPhone XS, 2015 iMac 16 GB 10.14.1 beta
    Quote Originally Posted by Rod Sprague View Post
    Yes that would be too great a risk. Just partitioning them differently increases the possibility of corruption although in theory it should be fine.
    I tried this several years ago. Essentially I was trying to do the same thing that flyboyy seems to wwant to do. I discovered three things that made me abandon the idea.
    1. At the time the only way I could think to keep both computers from trying to access the drive at the same time was to use some sort of usb switch with two inputs and one output and a switch to control which computer was giveen access to the drive. At the time I either could not find such a switch or they were expensive. I don't remember which was the case.
    2. I found directions online whhich demonstrated how to format the drive in such a way that one partition was for Mac and one for PC. Some ussers reported data loss when they tested this configuration and others did not. Although I did not experience data loss in limmited testing, I din't really trust the drive for a data backup.
    3. During testing I discovered that my Mac would mount the PC partition with no problems when it was connected to the Mac but I had to jump through a hoop or two to get the Mac partition to mount. I don't thiink everyone had this problem.

    In the end I decided this was more of a pain than it was worth. Took some time, and several failed ateempts, to set this up. After a while I was doing it mainly to see if the process was reliable/easy enough for a How To column I was writing.
    “Hard work beats talent when talent fails to work hard.”
    Kevin Durant

  8. #8
    Using an External Backup drive for Apple and PC

    Member Since
    Jul 03, 2014
    Location
    Courtenay, BC Canada
    Posts
    164
    Your Mac's Specs
    iMac -Sierra- 27"Retina 5K, Late 2015, 3.2 GHz, i5, 8 GB 1867 MHz DDR3, 250 GB SSD
    Thanks everyone,
    I will go for simplicity and two BU drives.

    All the best!
    Cheers Al
    iMac -Sierra- 27"Retina 5K, Late 2015, 3.2 GHz, i5, 8 GB 1867 MHz DDR3,
    iPhone 3Gs,
    Touch 32 gb, gold, gen 7

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