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Running Windows (or anything else) on your Mac Discussion of Classic or running Windows, Linux and other OSes on the Mac.

Parallels and USB drives

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rogerinlondon's Avatar
Member Since: Sep 02, 2006
Location: London, England
Posts: 397
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Mac Specs: MacPro 2,66GHz 10GB RAM NV 8800GT Cinema 30" * MBP 15" Glossy 2.33 GHz 2 Duo 3GB RAM 160GB HD

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Have just downloaded and installed a trial version of Parallels since you now can use the Bootcamp installation of XP. However, when you have a USB drive connected, you get an error message like this:

"More than one Windows partitions are found. This is not a standard Boot Camp configuration. Please refer to the Parallels Desktop for Mac User Guide, Using Boot Camp Windows XP Installation chapter for instructions on how to configure Parallels virtual machine in case of a non-standard Boot Camp configuration on your Macintosh computer."

I have tried to search around for a solution (apart from the obvious one to disconnect the drives, of course) with no luck. Anyone found anything better?
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Member Since: Apr 03, 2007
Location: Raleigh, NC
Posts: 1
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Mac Specs: iMac 24 in. 2.33 GHz Core2Duo, 2 GB RAM, 500 MB HD, nVidia 7600 GT with 256 Mb of RAM

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This problem occurs when you have an external Windows formatted drive attached to your m\Mac when you start Parallels. I solved the problem by ejecting the HD (if it is running) before trying to open parallels, opening Parallels, and then restarting the drive. The drive can then be seen within both Parallels and Mac OS X and all is fine.

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Member Since: Aug 27, 2007
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I had the same problem, contacted support, and this was the fix. It worked for me so I thought I would post it.

How to boot from the Boot Camp Windows partition in case of the
following error message:
"More than one Windows partitions are found. This is not a standard
Camp configuration"

Required Steps:

1. Please open Finder, browse to Applications - Utilities, double-click
on the Terminal appl. icon, type the "diskutil list" command and hit
Enter. Please find the required Bootcamp Windows partition (e.g. 3:
Microsoft Basic Data NO NAME 31.4 GB disk0s3) and note down the
partition number and the disk number.

2. After that please open Finder and browse to Documents-Parallels and
find the virtual machine .PVS file and open it by means of TextEdit and
find the following line:

Disk 0:0 image = Boot Camp

3. Please change this line to:

Disk 0:0 image = Boot Camp;diskXsY


X is the number of the physical hard disk

Y is the number of the Boot Camp Windows partition

These parameters are shown by means of the "diskutil list" command.

4. Save changes, close TextEdit and double-click the .PVS file to start


The result of the "diskutil list" command is as follows:


#: type name size identifier

0: GUID_partition_scheme *465.8 GB disk0
1: EFI 200.0 MB disk0s1
2: Apple_HFS Mac HD 434.0 GB disk0s2
3: Microsoft Basic Data NO NAME 31.4 GB disk0s3

#: type name size identifier

0: CD_partition_scheme *352.3 MB disk1
1: CD_ROM_Mode_1 Mac Drivers 306.8 MB disk1s0

#: type name size identifier

0: FDisk_partition_scheme *149.1 GB disk2
1: DOS_FAT_32 CHAS 149.0 GB disk2s1

#: type name size identifier

0: Apple_partition_scheme *90.3 MB disk3
1: Apple_partition_map 31.5 KB disk3s1
2: Apple_HFS Parallels Desktop 90.2 MB disk3s2

The line in the .PVS file should be:

Disk 0:0 image = Boot Camp;disk0s3
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