The drive that I'm using is a dual connection FW/USB, and the drive booted for me via the FW hookup. I'm not sure what you mean by 'chipset' within the drive. To me a FW connection and/or a USB connection is pretty much the same thing as the chipset that you're talking about, but I may be wrong. I guess if you're still not quite sure if it will allow you to boot or not, then maybe you should just try it out and see. You should be able to take it back if it doesn't fit your needs wouldn't you think? I have a WD My Book Premium and it's definitely bootable with either USB or FW 400.
I'm using it as my boot drive and it works on both Leopard or Tiger (I have a boot partition for each system). I use Carbon Copy Cloner and it works perfectly in both Tiger and Leopard. I assume the chipset in the My Book Studio is the same or similar to the one in the My Book Premium but you can contact WD to find out.
I did have one problem with the WD booting in FW but it was a conflict with an external LG DVD drive. Sort of an odd problem that I resolved only by disconnecting all my peripherals and reconnecting them one at a time. If both the WD and LG drives are connected with the same interface (i.e., both with FW 400 or both with USB 2.0), everything works fine, but if the WD is connected with FW and the LG is connected with USB, the WD won't boot. Check out the following knowledgebase article at Western Digital's Web site: The electronics of several models (but not all) of the MyBook external drives that support FireWire are seen by the computer as two devices on the FireWire chain. The first device number, called SCSI Logical Unit Number 0, is used by the drive case (probably to provide unique features like the capacity gauge found on these drives). The hard drive inside the case is SCSI LUN 1. Unfortunately, PowerPC based Macs will only search for SCSI LUN 0 devices during the boot sequence (as this has traditionally been the Logical Unit Number of a boot drive).
So if you have a PowerPC based Mac and you need the ability to boot from FireWire you would be better off buying a case that has a simple FireWire to ATA bridge (i.e. Presents itself as only one device). Note that not all chipsets are the same. The Oxford 911/922 chipsets have always been the best supported on the Macs.
If you are looking to buy an external drive/case it is worthwhile finding out what chipset it uses. LaCie external drives have good Mac support, although there are many other cheap cases available (e.g. Intel based macs will boot fine from a MyBook Studio as long as you partition the drive using the GUID partition scheme. The GUID partition scheme can be selected using the Options button when partitioning the drive using the Disk Utility application. WARNING: Partitioning a drive destroys all data on the drive. Hope this helps someone looking to purchase a drive for FireWire booting.
Geoff Gecko Computer Services Mac + PC Support Perth, Western Australia www.geckocomputer.com.au. Apple Footer. This site contains user submitted content, comments and opinions and is for informational purposes only. Apple may provide or recommend responses as a possible solution based on the information provided; every potential issue may involve several factors not detailed in the conversations captured in an electronic forum and Apple can therefore provide no guarantee as to the efficacy of any proposed solutions on the community forums.
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