I installed Windows XP on Parallels last night, and compared to Windows Vista on VMWare Fusion, Parallels had an incredibly different result. It just seemed so much faster than VMWare. Is there any reason to this why?

Also, is there any way I can run VMWare Fusion Virtual HD in Parallels? Would appreciate this. If this is not possible, is there a way I can increase my HD space for Vista in VMWare? Or do I have to treat this as a actual Hard Drive and assume that you cannot increase your HD space? Please help.

Thank you all very much in advance. =)

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Can somebody please advise me. Appreciate any help, thank you.

oh well, looks like this is not possible. =)

I really don't know, hence I can't answer, sorry. However, it seems to depend on the Machine which Application runs faster.

For me it's VMWare Fusion, which is running much more smooth than Parallels.

thank you for being honest Puttabong. Still appreciate your response, =)

I don´t like Parallels, I prefer VMware, i think it´s more faster and smooth but it´s only my opinion ... 512mb of ram are enough for XP but Vista needs a lot of resources .... if you edit your settings in Vmware you can add another hard drive for your virtual machine only click over "+" and that´s all, in windows you can resize the drive with virtual disk manager and diskpart from cmd but i´m sorry i don´t know if it´s possible expand the main HD in mac.

If you have a XP/Vista drive/partition (not virtual) you can use it like a BootCamp drive from VMware or Parallels.

I'll see what can be done. thanks for your response.

this is exactly what I have done and it works perfectly (vmware fusion / xp pro sp2) but xp cannot see my other hard disk (sata).
Do you know how could I do?

If im reading this correctly your other harddisk is your mac os x harddisk? thats probally because its a HFS+ formatted so windows cant see it.