Fire Wire: MBP OS X.4.11 Can't see external devices HELP!

My MBP will not "see" my new MB or my back-up drive—both connected via a firewire 400 (6 pin) cable. Both running Tiger X.4.11
I have used this cable to connect my MBP and a TiBook in the past as well as to back-up onto the LaCie e-drive.
I have run "disk repair" and "permissions" on both machines. BTW—"permissions" are regularly out of wack on the MBP.
Can't run Disk Doctor because I don't have a bootable disk yet. It's coming via snail mail.
The new MB "sees" the e-drive connected with the same cable.
I can't transfer my files to the new MB nor can I back up.
Is it time for a "clean install"? Makes me nervous that I cannot backup before trying anything drastic.
Can someone please help me?
Thanks in advance.
Tek

Connect the drive and open a finder window.
Does the drive show up in the sidebar with your Macintosh HD.
If it does you have a software problem and let me know so we can troubleshoot that problem.
If it does not show up, it could still be software but we should proceed as follows.
First, reset the pram.
From the instructions on the apple support site.
Resetting PRAM and NVRAM
1. Shut down the computer.
2. Locate the following keys on the keyboard: Command (the key with the apple symbol), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
3. Turn on the computer.
4.. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
6. Release the keys.
If still not visible, follow this article's instructions.
What to do if your computer won't recognize a FireWire or USB device
http://docs.info.apple.com/article.html?artnum=88338
After this if it is still not visible:
Choose Apple menu > About This Mac, click More Info, and then click FireWire.
If the device appears then you have a software issue.
- now we would resume troubleshooting software
If the device does not appear you likely have a hardware issue.

Similar Messages

  • Fire Wire: MBP OS X.4.11 Can't see external devices. PLEASE HELP!

    Fire Wire: MBP OS X.4.11 Can't see external devices. PLEASE HELP!
    My MBP will not "see" my new MB or my back-up drive—both connected via a firewire 400 (6 pin) cable. Both running Tiger X.4.11
    I have used this cable to connect my MBP and a TiBook in the past as well as to back-up onto the LaCie e-drive.
    I have run "disk repair" and "permissions" on both machines.
    BTW—"permissions" are regularly out of wack on the MBP. But, the disk is OK according to Disk Utilities.
    I also cannot put the machine to sleep after logging out. Has a hard time shutting down as well. Sometimes I need to force a re-boot.
    Can't run Disk Doctor because I don't have a bootable disk yet. It's coming via snail mail.
    The new MB "sees" the e-drive connected with the same cable.
    I can't transfer my files to the new MB nor can I back up.
    Is it time for a "clean install"? Makes me nervous that I cannot backup before trying anything drastic.
    Can someone please help me?
    Thanks in advance.
    Tek

    Put the more recalcitrant computer into Target Drive mode by starting it with the T key down until you see the yellow on blue screen. Then connect it to the other machine by firewire cable while both are already awake.
    I hope that you did not do any upgrades while you had external drives connected... that is an automatic problem. Always disconnect from externals and accessories before doing any upgrades. Always back up before doing any upgrades.
    Firewire networking is not the same as using a computer in Target Disc mode. In Target disc mode, you are using the internal drive of the Td computer as an external. That should allow you to run disk utility. Do use the proper disc utility version for the OSX version that is on problem drive. ie don't use the Leopard disc utility for the Tiger disc or vice versa.

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