I just ran a Disk Check on my Mac after the warped batery issue I had two days ago; it tells me to start up the machine from my Mac OS X installation disk and run Disk Utility to repair. I have cold feet insamuch as my Start Up disk is the old Tiger - and I have snow Leopard 10.6.5 installed on the machine; does that mean that I will downgrade to Tiger and then have to insert the Leopard disk after to upgrade? What about all my other 'stuff' which is all up to date (including aperture 3, which I am a great user of.). What should I do? Your advice is eargerly sought.Thanks an aging baby boomer. Hi Marc, Here are step by step in case you need them (and nothing to worry about performing Repair Disk): Repair Disk: Boot from install disc (insert disc>restart>immediately hold down c key and keep holding it until you see “Preparing Installation”)>at first screen select the language and click Continue> click on the Utilities Menu in the menu bar>open Disk Utility>select your HD in the panel on the left side>click Repair Disk at bottom of main window.

Question: Q: Disk Repair on a late 2007 Mac Book Pro I just ran a Disk Check on my Mac after the warped batery issue I had two days ago; it tells me to start up the machine from my Mac OS X installation disk and run Disk Utility to repair. If you receive this message from Disk Utility after replugging an external drive that wasn't successfully ejected (or unmounted), it could be that the OS is already busy performing the repair in the background. Your Mac will not be able to mount the disk until after the automatic checks are complete.

Run this at least twice, and keep running it until it says “appears ok” twice in a row. If that doesn’t happen, you may need a stronger utility such as DiskWarrior or if the directory is damaged beyond repair, you may need to reinstall the OS, or you may have a damaged HD (repair utilities can only repair the directory structure, not the HD itself). When this is finished, quit Disk Utility, quit the installer, and restart. 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. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the.

Repair Disk If Repair Disk Permissions has failed to improve system performance, use the Repair Disk option that's located to the right of Repair Disk Permissions. From here you can restore your data from a Time Machine backup, re-install the operating system, manage hard disk partitions, etc.Note: If your MacBook Pro is already on, you can click the Apple.