Multiple booting - through esata port, usb, firewire

i'm testing usb, esata, firewire ports for multiple booting and if anyone has also experimented just let me know p.s i remember there was another topic last year about it

I have tried to boot from eSATA, and I discovered a trick. In the BIOS, you have to switch the SATA mode from AHCI to IDE (aka legacy, compatibility, or just off).
I have a Y450 with a built-in eSATA port and an Intel ICH9 SATA controller. I bought an external powered enclosure that has an eSATA connector. The BIOS would not recognize the external drive, and so wouldn't list it in the boot order. It would recognize and boot from it via the USB connection however. Also, even though not recognized by the BIOS when connected via eSATA, once Windows 7 booted up, it found and used the drive just fine. I was able to partition and format it in Windows 7 over the eSATA connection. I was also able to boot Linux from CD-ROM, and then it also was able to see the eSATA drive (and install Linux). I just wasn't able to boot from it.
I experimented with settings in the BIOS, and found that if I set the SATA mode to IDE, then the BIOS did recognize the eSATA drive, list it in the boot order, and could boot from it. I've had no problems booting and running Linux on the eSATA drive this way, and performance measurements are close to the manufacturer's specs for average read throughput. What I lose without ACHI is native command queueing (which could provide a performance in random read cases), and hot plugging. Oh well.
The big pain is that I have to switch back to ACHI in order to boot Windows 7 on the internal drive. Otherwise I get the blue screen of death, due to Windows expecting SATA devices, not IDE.
I think Lenovo could fix the BIOS if it wanted to. I wish it would...
Greg Holmberg

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Well, this may be an "oopsie" for me then. I just purchased this hub a couple of days ago from the Apple store (my powered Belkin hub - the lozenge-shaped one - just failed).
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I have a series of 3560g's setup. I am going to be connecting two of them between different offices via a fiber cable. I use 3 VLANs and am unable to find a way to make this work.
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Posting
Just to clarify, only the ports, on the link between the switches, are defined as trunk ports.
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Thanks for the reply. I've tried combinations of all three. Usually I power up my computer, then plug in the drive and turn it on, but I've also tried plugging the drive in while it's running, and starting up the computer with the drive plugged in and running
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How to connect my new MacBook Air to a LaCie hard disk with TIme Capsule backup from my old Imac? LaCie has USB 2.0, FireWire and eSata ports.

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Multiple external drive problems, both USB and Esata

Everything worked well in Tiger on my first gen MBP. Since i switched to Leopard and now Snow, and a new UNI MBP in december 08 I have so many external drive issues.
USB drives just disappear and power off (from the system not electrical) for no reason, mostly when connected to USB hubs. I've tried various hubs including the powered ones. But as soon as i go over two USB devices in the provided ports my problems start.. It feels like not enough juice is getting through those ports on my MBP. I never have a problem if i just connect 2 devices into the MBP, but it's not enough (i have 5x1tb external drives).
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I will post in 2 forums because i'm not sure if software or hardware related.
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@ Gregory
All my drives are 3.5" HD's all with external power cables along with a mains powered USB hub. Sorry, i didn't state that clearly in the original post (i thought the hint of all drives being 1TB was a dead giveaway:)).. However, this still doesn't explain the same behaviour of the 2x1TB esata drives which actually work well if no external USB drives are connected. Sorry i'm not technical but does the expresscard slot share any bridge,bus or power connectivity with the USB slots??
I'll try this SMC reset that S.U mentioned...
Thanks for everyones help and ideas so far.

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Have you tried booting from a Linux Live CD, e.g. Ubuntu , just to make sure that it's not software related?
W520|4282-W16|2720QM|16GB|Q1000M|FHD|500GB|UMTS|BIOS 1.26|Gentoo Linux/2.6.39-r3|Win7-64-Prof|

I need a usb-firewire solution. running out of ports!

Hi,
THe two usb ports supplied on my MBP are not enough and i already have a powered usb hub connected to each port, further connecting several devices and hdds!
now simple things like making a TM backup are running slow because of like 2 to 3 hdds connected to hubs on each port.
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if there is an ethernet based solution, then that would be even better! cause there i would have a 1gbps bandwidth to spare.
please link me to the right product please. google confuses me and i can make out from the specs as to how the hubs it lists, work.
thanks for stopping by.
Neerav
Message was edited by: AceNeerav

Hi JMF, I had the same issue as you, but I found a USB drive that does fit next to a standard sized USB cable. It is a Verbatim USB Mini Swivel and comes in sizes from 1GB to 8GB. You can get these through the Online Apple store. Hope this helps.

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Join the club. I've been searching for a while without much luck. Right now there appears to only be one company which makes a Firewire to USB cable. Good luck finding a place that sells it though.
http://www.pixela.co.jp/en/products/tv_capture/pix_uvcd_u1w/index.html
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Right now eSATA is not too common on computers, so it would be something that you would be paying for that you would not use for a while.
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Hi Corrine.sant,
Welcome to Apple Support Communities,
With regards to USBs, you cannot plug in/use USBs that contain anything other than photos in an iPad Air and there are no adaptors that would allow you to do this.
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Yes, the boot drive had to be firewire, but you can use a 2.5 portable as long as it has OS X on it and is firewire(I use SuperDuper! to make a bootable clone).

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Same here. Since a few weeks, my MacPro ejects USB HDD's as soon as I write or read data on it.
(no I haven't installed something new at this time and all HUB's and HDD's have their own power supply, and yes they have been exchanged, so its not a broken cable or so !!!!!!!!)
After a reset of the NVRAM and PRAM its better for an hour or so, then starts to eject again. I've seen a lot of communities with exact the same question, but never a solution for it. There is also nothing in the support tab of apple.
Hope someone here can help me out or due to the fact that this is a AplleSupportCommunity, a Apple-Employee may starts to do his job and help this huge amount (I guess there are hundrets or tousand) of mac-user with exact the same problem....
btw: don't agree with MACATTACK2010 that this is a hardware problem, cause there are a lot of people in the
net that ask the same question with brandnew Hardware. I think it's an OS or an Update Bug, or may both.

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The Mini initially refused to boot past the initial white/gray screen. It never got to the Apple or the cog.
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Hello,
Great work & very interesting thanks!
My guess is mA available & mA required, chect System Teport>Hardware>USB for like this...
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Host Controller Driver:    AppleUSBOHCI
PCI Device ID:    0x0035
PCI Revision ID:    0x0043
PCI Vendor ID:    0x1033
Bus Number:    0x0b
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Version:    19.65
Bus Power (mA):    500
Speed:    Up to 12 Mb/sec
Manufacturer:    Apple, Inc.
Product ID:    0x8207
Vendor ID:    0x05ac (Apple Computer, Inc.)
General Purpose USB Hub:
Version:    1.00
Bus Power (mA):    500
Speed:    Up to 12 Mb/sec
Product ID:    0x2077
Vendor ID:    0x0451
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Bus Power (mA):    500
Speed:    Up to 12 Mb/sec
Manufacturer:    Ralink
Product ID:    0x5372
Serial Number:    1.0
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MegeCam:
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Product ID:    0x8007
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I have a HDD attached to my AirPort Express through a 7-port USB

I have a HDD attached to my AirPort Express through a 7-port USB hub. How come it doesn't show in my iMac?

To add to what Tesserax said -
http://support.apple.com/kb/HT2421
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Multiple booting - through esata port, usb, firewire

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