Link to home
Start Free TrialLog in
Avatar of Glen_Sydney
Glen_SydneyFlag for Australia

asked on

How can I get USB disk to work reliably in Mac OS and in Windows under Parallels?

I run Parallels on an iMac and have reliability issues with USB sticks.

I need to copy files to and from the USB stick so as to use them on my Toshiba Ultrabook running Windows.

I find that it works well for a while then over time either Mac OS or Windows on the Mac won’t recognise the disk or else will start running extremely slowly in Windows Explorer.

As a result I have replaced quite a few USB disks and eventually ended up in the same position.

Recently I bought a SanDisk USB disk from a Mac shop, I then copied files on to it in Windows Explorer under Parallels, put it into my Toshiba, copied some files back and forth, and when I put the USB back into the Mac , Windows (under Parallels) would not recognise it as it had just already done.

Usually I find when putting USB sticks into the Mac the system will ask me if I want to connect it under Mac OS or under Windows and previously I found that choosing Mac gave me access under both anyway.

With this new USB the only way to get it to be recognised under Windows was to choose Windows when connecting then I could read it in Window Explorer, but not in Mac OS of course.

Has anyone any ideas please?  

The change in behaviour over time (recognising, then not recognising, and/or slowing right down) is a great frustration.

Thankyou for your assistance.
Avatar of serialband
serialband
Flag of Ukraine image

What format is the old USB stick?  What format is the new USB sitck?

Select the USB and right click to open the popup menu, then Select Get Info.  You can also do a command i to Get Info.

Expand the General section to check the Format.

Have you tried Disk Utility to reformat the USB stick?


Have you also though about just sharing your folders and copying files directly over network?  I suggest using a wired network for faster consistent speeds if you still have slower Wifi.
SOLUTION
Avatar of cousnit
cousnit

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Avatar of Glen_Sydney

ASKER

Thankyou for your various advice and sorry for the delay replying.

I will investigate the formatting options and get back to you.

I also realised both my Mac OS and Parallels are one version behind the latest version, not sure if that has any impact, but I do intend to upgrade both shortly.
Those have no relevance to the file system on your USB memory stick.
Thankyou for that.   I tried formatting a USB in the Mac Disk Utility but could not find NTFS, so I tried EXFAT but of course it won't read under Mac OS now.

I tried formatting it in NTFS on my Toshiba Ultrabook but could not work how to format it.   Where do I do that in Windows please?

Thanks again.
EXFAT should have been readable in OS X.

To format in Windows, you can right-click on your Computer and select Manage.  When the Computer Management console starts Select Disk or Storage depending on your version of Windows.  Choose Disk Management.  You might be able to just search for Disk Management and just start that portion only.  You should then be able to partition, label and format your disk.
Thankyou, I will try that and let you know how it goes.   :-)
ASKER CERTIFIED SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial