A little-known fact about Time Machine is that it depends on the MAC address of a computer to tell one system from another. This means that if you have your Mac repaired with a new logic board, or replace your system with a new one, you can't resume backups where you left off. If you know of the problem, though, it's not very hard to fix. You need to re-pair the backup to the new logic board's MAC address. Further complicating matters is the ACL which prevents you from changing the system ID information.
First, turn off Time Machine temporarily. Next, determine your new MAC address. Open System Profiler, and select Network followed by Ethernet. You should see a MAC Address field with a number of the format 00:1a:2b:3c:4f:56. Copy it or write it down somewhere.
I will assume that your backup disk is named Time Machine and your computer is named MyMac. In addition, my "old" MAC address for demonstration purposes is 00:f9:e8:d7:c6:b5 and the new one is 00:1a:2b:3c:4f:56. Change occurrences of those values below wherever they occur to match your system.
I don't like to have icons cluttering my desktop. I have figured out a way to remove the Time Machine volume icon from the Finder without affecting Time Machine. I want other external drives to be visible, so the Finder's preferences are of no help here. Apple actually provides everything needed. I will explain how to remove the volume for Finder using Developer Tools, and without having Developer Tools installed (like me). Please note that Time Machine Volume refers to the volume Time Machine is backing up to, or any volume you would like to hide.
To make this work, you need to have the Unix program SetFile installed. If you have the Developer Tools installed, you have it already, and you can skip the following steps. To install SetFile, do this:
Like many others, I've had trouble getting "Back to my Mac" working. However, I noticed that If I connect my home computer (iMac) to my iDisk before leaving home, I'm then able to see/connect to it from any remote location from my MacBook Pro.
I recently updated my updated my MacBook with new hardware. I used Disk Utility to "restore" my old drive onto the new drive. This worked great, except that Time Machine uses the MAC address to uniquely track Time Machine backups. Perhaps there is a way to convince TM to use my existing TM backup, but I couldn't find an easy way (if you know, please comment). However, I wanted to preserve my older backups.
This hint provides one method, but I wanted to archive only 60GB of TM data on a 500GB external, and did not want to use the whole 500GB or repartition (which a restore would have required). Most methods of copying TM backups will fail due to TM's hard links. However, in Disk Utility it does work to select the TM drive and choose 'New Image From disknnn.' I saved this as a read-only image on my 500GB external. I could then use this image with TM's 'Browse other Time Machine disks...' feature (after mounting the image, of course).
Early on after Leopard was released, I followed this tip on how to make a small partition on my Time Machine (TM) drive and clone a copy of my install DVD to it. The point here was to have faster access to the restore feature of TM, without the need to locate and boot from your install DVD. This worked well, but I've since discovered an even simpler method which does not necessitate the need to partition the TM drive.
Starting with a clean, newly-formatted TM drive, use Disk Utility and do a restore (source: Install DVD; Destination: TM drive). Once the restore has completed, you'll have a bootable TM drive which can be selected on startup by pressing and holding the Option key down. All that's left is to go into TM's preferences and select this drive for your TM backups.
Simple, quick, and works like a charm, without the need to partition the drive.
I've not found this characteristic documented. Had I known/understood, much time would have been saved. The events in an Automator calendar within iCal are not passed on to other Macs that are synchronized through .Mac. This is good thing, and to be hoped for, but this functionality had not occurred to me.
I had created iCal plug-ins via Automator, then moved them to my personal calendar. Overnight, they passed through .Mac to my other Macs, where the timed routines failed because the routines weren't meant for those Macs. Returning the Automator events to the Automator calendar, and re-syncing all my Macs, resolved the issue as the events/routines "disappeared" from iCal on the other machines.
I needed to install Windows XP on my MacBook, but whenever I tried to partition my drive, Boot Camp would give an error which said "Verification Failed" and tell me to use Disk Repair on my Leopard CD.
Problem is that most of the time it says that the disk doesn't need repair and thus the error remains.
If you have the same problem, you can to the following to sort it out:
Restart your Mac.
As soon as it turns on, even before you hear it go bong, hold down Cmd+S.
The system will boot showing a lot of text. If it doesn't and you see the Apple logo, you've waited too long. Reboot and try again.
When at the prompt type fsck -f. If changes are successfully made it will repeat the process then say "Modifications have been made".
Then simply type in reboot and you should be able to partition your drive successfully.
[kirkmc adds: This is not the only cause of such an error. When partitioning hard disks, Leopard uses the resizeVolume command which moves files as necessary to be able to partition the disk. When doing so, it may encounter files that it cannot move - system or metadata files - and this will give you a Verification Failed error, with no other explanation. You can learn more about how this command works in a Macworld article I wrote last year.]
So, to prevent some windows from being moved when using that shortcut, minimize (Command-M) the windows you wish to remain in their current spaces, or hide the apps (Command-H, usually) to which they belong, before invoking Spaces' F8 overview mode.
When using the volume control function keys on an Apple laptop, there's a limited amount of control over the volume -- each key press moves the volume by one entire unit in the onscreen bezel. However, by pressing Shift and Option along with the volume key you want to use, you can break up each large step in the volume control bezel into four parts, instead of having to use the menu bar item or System Preferences for fine-grained control.
[robg adds: I don't have 10.4 with me on the road this week, but a friend tested it for me and said it did not work. Hence, I've marked this hint as 10.5 only. If that turns out to be wrong, please let me know. Someone else with an external third-party keyboard said it didn't work for him in 10.5 -- so this hint may also require a laptop Mac and built-in keyboard. If someone can test using an Apple external on a desktop and/or laptop, please post your results in the comments. (Being on the road this week, the macosxhints.com test lab has been reduced to a MacBook Pro running 10.5 with the built-in keyboard.)]