Cannot read HDD with Windows after formatting with Mac OS

Question

Cannot read HDD with Windows after formatting with Mac OS

Hi there,

after I formatted my external Hard drive with the terminal in Mac OS, I cannot read the disk with windows.

Here is the result from diskutil list:

#:	TYPE NAME	SIZE	IDENTIFIER
0:	GUID_partition_scheme	*251.0 GB disk0
1:	EFI EFI	209.7 MB disk0s1
2:	Apple_HFS MacOS	47.0 GB	disk0s2
3:	Microsoft Reserved 16.8 MB	disk0s3
4:	Microsoft Basic Data BOOTCAMP	203.7 GB disk0s4

/dev/disk1

#:	TYPE NAME	SIZE	IDENTIFIER
0:	FDisk_partition_scheme	*500.1 GB disk1
1:	DOS_FAT_32 WSYSBACK	125.0 GB disk1s1
2:	DOS_FAT_32 DATENBACK	375.1 GB disk1s2

This is the error I get in Windows 10: (Enlish below)

"Das letzte USB-Gerät, das an diesen Computer angeschlossen wurde, hat nicht ordnungsgemäß funktioniert und wird von Windows nicht erkannt.

Empfehlung:

Schließen Sie das Gerät erneut an. Es es immer noch nicht von windows erkannt wird, ist das Gerät möglicherweise nicht funktionstüchtig."

Which means in English:

The last USB-device you plugged in this computer did not work properly and is not recognised by windows...

So I can read and write with Mac OS, but not with Windows. In the device manager of Windows, I cannot see the device either.

Does someone know a solution to this problem?

MacBook Pro (Retina, 13-inch,Early 2015), iOS 9.2

Posted on Feb 12, 2016 6:48 AM

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Answer 1

pedro d

Community Specialist

Feb 13, 2016 2:05 PM in response to Community User

Hello there, godlich.

It sounds like you are trying to format an external drive to be readable in Windows. The following Knowledge Base article offers up some great guidance for how to do just that:

Disk Utility 12.x: Format a disk for Windows computers

You can use Disk Utility to format a disk to use with a Windows computer.

Notice:Formatting a disk erases all the files on it. Copy any files you want to save to another disk before formatting the disk.

Open Disk Utility, in the Utilities folder in Launchpad.

Select the disk you want to format for use with Windows computers.

Click Erase, and choose one of the following from the Format pop-up menu:

If the size of the disk is 32 GB or less, choose MS-DOS (FAT).

If the size of the disk is over 32 GB, choose ExFAT.

Type a name for the disk.
The name’s maximum length is 11 characters.

Click the Erase button, and then click Erase again.

You can also partition a disk using the Master Boot Record partition scheme, which is compatible with Windows.

Partition a disk

Thanks for reaching out to Apple Support Communities.

Kind Regards.

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