Reinstall using installer copied from Time Machine.

I was worried about viruses and installed Avira free anti-virus. It messed up a few things (unmounting USB drives and more) so I uninstalled it. However, OS X 10.10 and Safari still seem slow and flakey. I have the installer copied from a Time Machine disk. Can I just copy this into the Application folder, run it and reinstall everything? Has anyone tried this?
Stephenscribe.

Easier would be to simply restart in recovery mode, by holding down command-R at startup, and reinstall that way.
That will require re-downloading, however... if you're trying to avoid that, you can turn the backed-up installer into a bootable install disk:
Create a bootable installer for OS X Mavericks or Yosemite - Apple Support

Similar Messages

Can i uninstall iPhoto 9.4 and reinstall iphoto 9.3 from time machine and will my photos still be there?

can i uninstall iPhoto 9.4 and reinstall iphoto 9.3 from time machine and will my photos still be there?
Janet

Did you try to repair your library after the update to 9.4? Here's what you can try: make a temporary, backup copy of your library if you don't already have one (Control-click on the library and select Duplicate from the contextual menu) and apply the two fixes below in order as needed:
Fix #1
Launch iPhoto with the Command+Option keys held down and rebuild the library.
Since only one option can be run at a time start with Option #3, followed by #4 and then #1 as needed.
Fix #2
Using iPhoto Library Manager to Rebuild Your iPhoto Library
1 - download iPhoto Library Manager and launch.
2 - click on the Add Library button, navigate to your Home/Pictures folder and select your iPhoto Library folder.
3 - Now that the library is listed in the left hand pane of iPLM, click on your library and go to the File ➙ Rebuild Library menu option.
4 - In the next window name the new library and select the location you want it to be placed.
5 - Click on the Create button.
Note: This creates a new library based on the LIbraryData.xml file in the library and will recover Events, Albums, keywords, titles and comments. However, books, calendars, cards and slideshows will be lost. The original library will be left untouched for further attempts at fixing the problem or in case the rebuilt library is not satisfactory.
If the above does'nt work and you want to go back to iPhoto 9.3 read this tutorial from iPhoto Library Manager's website: Fat Cat Software - iPhoto Library Manager Help - Downgrading a library to an earlier version of iPhoto
OT

Copy from Time machine to an new iMac doesn't Work ?

I bought a new iMac and want to copy from time machine that is on an external disk. Copying stops after 10 minutes. What to do?

Please visit Pondini's Time Machine FAQ for help with all things Time Machine.

Mayor Problems with new installation / restoring from time machine

I encountered several problems while setting up my mac mini, 1,66 Ghz, 60 GB from the start. The following problems occured:
1.) Installing 10.6 upon existing 10.6.4 caused scanner driver to fail. I was unable to reinstall it, so i decided to reinstall 10.6. from the start
2.) clean install of 10.6., after finishing i could not install iWorks. There was an error like "com.apple.installer.pagecontroller" ant installation terminated. With MS Office 2004 I had a problem, too: An error with _ds.store occured, I could not even copy the files to my harddisk. I thought, it might be the optical drive, so i took an external one which caused the same problems. I proceeded to 10.6.4 by update, but that did not make it better.
3.) next clean install (two tries wirth different backups) by my backup from time machine. It worked until it rebootet. I ended in a blue screen with every now and then the rotating cirlce, but could not proceed any further.
4.) tried to repair rights hat no effect. The harddisk is reportet to be functional.
5.) Back to the roots, i thought, installing 10.4. which came on the grey disks with the mini. I encountered the same problems after installing, furthermore, on trying to install flash 10.1 it could not open the .dmg-file.
6.) Installed Win XP. All seems funktional.
So, please, can anyone tell me, what is wrong with my mac mini? to me, it seems to be a problem with hardware, but i cannot verivy this. Please help me.

MathiasLeopold wrote:
3.) next clean install (two tries wirth different backups) by my backup from time machine. It worked until it rebootet. I ended in a blue screen with every now and then the rotating cirlce, but could not proceed any further.
Did you use a Leopard Install disc to restore a Snow Leopard backup? If so, that's the problem. You must use a Snow Leopard Install disc to restore a Snow Leopard backup.
If you did use the right disc, were you restoring backups from the same Mac?
If so, were you having problems before all this started? If you were, it's possible those problems corrupted your installation of OSX, and that was copied to the backups.
So, please, can anyone tell me, what is wrong with my mac mini? to me, it seems to be a problem with hardware, but i cannot verivy this. Please help me.
Try running this: Intel-based Macs: Using Apple Hardware Test

How to reinstall Mail and itunes from Time Machine backup

My Mac Pro is running slow and AppleCare have advised to do a clean install of 10.6.6
All my files are backed up and I have done a TM backup. I want to be able to reinstall Apple Mail with all my family email and business email accounts & emails in it and also iTunes with all music and podcasts.
Is there any way I can do this directly from a back up of Time Machine without having to reinstall the whole thing once my machine has had a clean install.
Thanks in advance
Matt

First, reinstall OS X as you've been instructed to do. Upon completion of the installation Startup Assistant will give you the option to restore from a TM backup or other external drive. Restore your Home folder, Applications, support files, and network preferences which should return all your files.
If you restore your old system entirely then you will have what you now have - a slow running system.
But before you perform all of the above what you might try first are these:
A. Repair the Hard Drive and Permissions
Boot from your OS X Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer. Now restart normally.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
B. Kappy's Personal Suggestions for OS X Maintenance
For disk repairs use Disk Utility. For situations DU cannot handle the best third-party utilities are: Disk Warrior; DW only fixes problems with the disk directory, but most disk problems are caused by directory corruption; Disk Warrior 4.x is now Intel Mac compatible. TechTool Pro provides additional repair options including file repair and recovery, system diagnostics, and disk defragmentation. TechTool Pro 4.5.1 or higher are Intel Mac compatible; Drive Genius is similar to TechTool Pro in terms of the various repair services provided. Versions 1.5.1 or later are Intel Mac compatible.
OS X performs certain maintenance functions that are scheduled to occur on a daily, weekly, or monthly period. The maintenance scripts run in the early AM only if the computer is turned on 24/7 (no sleep.) If this isn't the case, then an excellent solution is to download and install a shareware utility such as Macaroni, JAW PseudoAnacron, or Anacron that will automate the maintenance activity regardless of whether the computer is turned off or asleep. Dependence upon third-party utilities to run the periodic maintenance scripts had been significantly reduced in Tiger and Leopard. These utilities have limited or no functionality with Snow Leopard and should not be installed.
OS X automatically defrags files less than 20 MBs in size, so unless you have a disk full of very large files there's little need for defragmenting the hard drive. As for virus protection there are few if any such animals affecting OS X. You can protect the computer easily using the freeware Open Source virus protection software ClamXAV. Personally I would avoid most commercial anti-virus software because of their potential for causing problems.
I would also recommend downloading the shareware utility TinkerTool System that you can use for periodic maintenance such as removing old logfiles and archives, clearing caches, etc. Other utilities are also available such as Onyx, Leopard Cache Cleaner, CockTail, and Xupport, for example.
For emergency repairs install the freeware utility Applejack. If you cannot start up in OS X, you may be able to start in single-user mode from which you can run Applejack to do a whole set of repair and maintenance routines from the commandline. Note that AppleJack 1.5 is required for Leopard. AppleJack 1.6 is compatible with Snow Leopard.
When you install any new system software or updates be sure to repair the hard drive and permissions beforehand. I also recommend booting into safe mode before doing system software updates.
Get an external Firewire drive at least equal in size to the internal hard drive and make (and maintain) a bootable clone/backup. You can make a bootable clone using the Restore option of Disk Utility. You can also make and maintain clones with good backup software. My personal recommendations are (order is not significant):
Backuplist
Carbon Copy Cloner
Data Backup
Deja Vu
iBackup
JaBack
Silver Keeper
MimMac
Retrospect
Super Flexible File Synchronizer
ynchronizer
SuperDuper!
Synchronize Pro! X
SyncTwoFolders
Synk Pro
Synk Standard
Tri-Backup
Visit The XLab FAQs and read the FAQs on maintenance, optimization, virus protection, and backup and restore.
Additional suggestions will be found in Mac Maintenance Quick Assist.
Referenced software can be found at CNet Downloads or MacUpdate.

Use back up from Time Machine to start new MacBook Pro

Using the Time Machine and an external Hard Drive I back up my 3 years old MacBook (running Lion and with hard drive of 250 GB)
I am planning to purchase a new MacBook Pro (with a hard drive of 750 GB)
how do I transfer all my software and Data to my new computer?
if I plug my Time Machine to it will set up my new computer just the way I have my old Computer?
will all software work properly?
Any thing else I should have in Consideration??

K2spuky wrote:
Using the Time Machine and an external Hard Drive I back up my 3 years old MacBook (running Lion and with hard drive of 250 GB). Will all software work properly?
The old machine is running Lion already, then all your programs are ready already for the new machine with Lion.
how do I transfer all my software and Data to my new computer?
if I plug my Time Machine to it will set up my new computer just the way I have my old Computer?
Plug the TimeMachine drive into the new computer, boot it and when you go through the setup there will be a opportunity to transfer from the TM drive.
Shouldn't be a problem as your already on Lion.
Of course if your older machine software is crappy and slow, so will your new machine.
You might decide to fresh install instead, create the same user on the new machine then install all your programs from fresh original sources and then transfer files manually from the older machine, droppping the contents right into the same user folders as on the old machine.
More work, but actually saves work if your older machine is screwed up. Because Setup and Migration assistant has no brains, it transfers crap just as well as the good stuff. and despite what it says, it seems to transfer programs even if you state you just want files. Why I don't know, it's what someone said.
I never use either, because reinstalling the whole OS again, especially Lion with the Internet download, is not worth the chance. I'd rather download a few programs and transfer manually, takes about the same amount of time.

Copy error -36 when copying from Time Machine disk to Mac

Since using OS X 10.6.(.6), I can't copy certain files from my Time Machine disk to the Mactintosh hard disk without getting a copy error -36. The error doesn't occur with all files: for example pdf files will copy without problems, but Filemaker Pro files and iCal files don't. May be it's important to mention that when I retrieve files from the Time Machine disk, I have to mount the "sparse bundle" with my user files first and then drag the files to the desktop or an other place. This is because I'm running File Vault. If I try to retrieve files that were backed up under OS X 10.5, I get no copying errors at all. So it looks as if Snow Leopard has something to do with it. Is there anybody who has seen this problem before and knows how to solve it?

Ok, I finally was able to complete the Disk Utility Repair, and it says everything is ok. Still the problem in restoring presists.
One thing I noticed is that most files that Time Machine restore chokes on have an added set of permissions added to the file or folder with the same user name as mine, and the permissions level says "Custom". Thus it has 2 sets of permissions defined with the same user name, one with Read/Write and another with the same name that says "Custom." Am I explaining this well? Maybe this is a clue?

How to copy from time-machine backup of iTunes copied to external drive onto micro SD card

del Name: MacBook Air M
Have a new MacBook Air 6.2, Processor:Intel Core i5, 1.4, Memory: 8 GB, HD: 256 GB
It operates OSX Yosemite 10.10.1
I downloaded fresh copy of iTunes 12.01.26 onto the air.
I have a large time machine backup of iTunes songs a previous iTunes libraries (194 Gb)
This is stored on an WD 1 TB external drive using a 3.0 usb cable.
How do I copy a selection of iTunes songs (approx 40GB in size) from the external drive
onto a 64 GB SD card. The card fits with a nifty adapter into the expansion slot of the macbook air.
Grateful to know step by step approach

Thanks for the advice. My time machine iTunes backup includes several previous backups and is approx 164 gb in size. My SD card is 64 gb. How can I restore chosen directories so that it fits the SD cards capcity
Thanks - again

Copying from Time Machine Backup - No Permission

Hi,
My Late 2009 (OSX 10.8) was running slowly due to corrupted files. The Apple Store Genius suggested reinstalling the operating system which they did (thank you Apple). I have Time Machine backups on a locally connected (firewire 800) Drobo raid system. The Genius suggested that I move the User folders over rather than just restore a complete backup so as to avoid possibly restoring corrupt files. I didn't have success doing this and went back to the Apple store today with my 27" iMac and Drobo in tow.
The genius suggested I copy the folders I want (iTunes Music and iPhoto Library to the "Music" and "Pictures" folders on the reinstalled computer. I am not able to copy the 86GB iPhoto Librray to the computer as a message says I don't have permissions.
Can someone explain how to get around this problem? All of my data is in the Time Machine backup but it seems I can't copy the iPhoto library.
Thanks,
kayjh

You're in the wrong section (Mountain Lion when you should be in Lion), but I don't think it pertains to your problem.
How are you copying the folders? As far as I know, you can't just drag them in Finder from the Time Machine disk. Migration Assistant in your Utilities folder is the safest way to go. It lets you selectively copy only user data instead of the system if you want to avoid copying a corrupt system file.
If you're copying it over right and are still having problems, try repairing your Mac's disk permissions in Disk Utility (in /Applications/Utilities).

0x8002006E error while copy from time machine files

what does this error mean? got it by Rclick some folders in Time Machine disk that I hoped to copy to a CD
I read you are not to manipulate timemachine files, but the apple genius told me it's OK to burn

Try restoring the folders to an "alternate location:, such as your Desktop, via the Time Machine browser (the "Star Wars" display). See Time Machine - Frequently Asked Question #16. Then you should be able to burn the restored folders.

Imac won't restore from time machine backup after HD (hard drive) recall replacement

I have an imac bought in 2011, running Snow Leopard. It required an HD replacement due to the 1 TB Seagate recall - the replacement was done by a certified Apple repair station yesterday. Before the guy left he started a backup/restore from my latest time machine backup set. It failed. I attempted it two times and got error messages that it failed and the computer needed to be restarted to try it again. No luck. I called the guy back and he told me to call Apple Care. Not thrilled about that response since the guy had just left my house I did what he told me to do. (A quick sideline here: I recognize that a time machine backup should be no big deal and SHOULD work everytime, but it doesn't. It irks me that Apple is replacing my HD through no fault of mine and yet they don't allow the restore of data to be a "covered" expense in this process - this isn't just because this was an authorized repair guy - the Apple store would have done the same).
Back to the issue. When I called apple care they pretty much had me try the same thing again with an earlier back up set. To my knowledge, it didn't work. I say this because it looked like it was working and when I came back to the imac later, it had restarted and once again booted to the OSX install. (The boot disc is still in the imac). When I tried to boot from another location, one did not show up to boot from so I assumed that the data didn't transfer and it forced another restart. So, I tried something else. I tried to re-install the snow leopard OSX without using the restore function. That appeared to work and then when the machine restarted it asked if I had another mac and I chose the option to get the files/apps/etc. from my time machine backup. The computer chose what I can only assume is the most recent backup set (It chose what I know to be a subfolder that appears under the dated backup folder - Macintosh HD--which btw is confusing seeing as that's always the name of the HD on the imac). I again stepped away from the computer so it could do its thing for two hours. When I returned, I was back to the MAC OSX screen that asks you to choose a language. There were no more options to choose DISK UTILITY or RESTORE FROM BACKUP, etc. When I clicked on English it took me right back into the screen where you say whether you have another Apple that you want to transfer data from. I realized that the imac must have restarted and I assumed maybe it was because the boot disk was still in - except how do you get the disc to eject? I also initially assumed that the backup had somehow failed again and triggered a restart. I tried to choose the option to just set up the machine without transferring data and when I got to the choose a name for your HOME folder message I tried to enter the same name I had it as before and it wouldn't allow me to do so, saying that that name was already in use. I also tried a different name and that didn't work either - got the same message (I assume if it is not the same name that it won't sync up with the time machine data from the backup set). So, I almost tried the "select time machine backup" option again until I looked at my HD space. Clearly, there is space that has been used. HD space was 997 at the start and now it's 636. My initial thought is to somehow get back into the setup area where I can use disc utility and erase the whole thing and then start over but 1) I don't think it's going to work even if I could get back there 2) I have no idea how to get this thing to reboot into that mode 3) I can't get the boot CD out to even try to restart to see if this thing did what it was supposed to, SO NOW I AM TOTALLY STUCK! I have not called Apple Care back because quite frankly they were useless the first time. I have a call into the repair guy but who knows how much help he will be. In the mean time, I have a million things to do and a computer that isn't working - Whoever said Apples never have issues needs to be seriously censored!
A few other notes: I use Time Machine Editor to run my backups weekly. It was set up that way from the get go by an Apple rep who came to my house to get us up and running. Editor should not effect the way that time machine does its work, so I doubt there is relevance but thought it worth mentioning.
One other note is that the Apple Care agent tried to have me do something called a "Source" something or other from the disk utility screen but when she realized that my backup file (shown by date) contained many other sub files (11-27-12/MacintoshHD/MyNamesIMAC/etc.), it was not possible to run this operation - thus we aborted. Sorry I don't remember the name of the process and unfortunately now can't access that option to go find it.
If you can help me, I would be eternally grateful! I am open to having a phone conversation if you are willing to give me your email to mail you my number. I have so much work to do this week and this was the last thing I needed. Did I mention this was supposed to be EASY?
I used to be quite the geek with my PC - still on the learning curve with the mac but not enjoying it. I am fairly tech savvy and I can follow instructions for a step by step solution if you've got one.

I got a recall and had the drive replaced. I have retored 3 timesa dn even had apple do the job and it is still not right. I still can't get a simple ghost of the data from time machineback tot he new drive.
This is Apple's explaination as taken from their web page.:
Restoring your entire system from a backup
If you are restoring a backup made by a Mac to the same Mac
With your backup drive connected, start up your Mac from the Recovery system (Command-R at startup) or Mac OS X v10.6 installation disc. Then use the "Restore From Time Machine Backup" utility.
Note: If "You can't restore this backup because it was created by a different model of Mac" appears when restoring a backup that was made on a different Mac, follow the onscreen instructions.
I even posted this information on the community and apple removed it... because they don't like the:
Off-topic or non-technical posts
Non-constructive rants or complaints
But here is my experieince:
Take in 27iMac running 10.6.8, 5-7 days, what a joke, my boss will be happy to pay for a week without working. Finally get, "if you have TM back up, 3 days." Get machine back with 10.6.3, hit the R recovery, click TM back up, runs for 2 hours, reboots, looks great. Box up take back to office... update to install - OH NO, still running 10.6.3. Updates crash with no specific error on install, BUG PROBELM, nothing runs.
Call Apple... after hours, tells me to boot using 10.6.2 disk, wipe, reinstall OS, udate to 10.6.8, THEN do the restore. GREAT! Only thing 10.6.2 DVD won't read... now back on phone... take back to the store, Genius says, he'll ix it just like it was. PROMISES it'll be fixed.
Pick up next day, supposedly, booted to disk, wiped drive, reinstalled, updated to 10.6.8 and THEN did the RIGHT restore... Looks GREAT... apps run and 10.6.8 OS. Back to the office... NOT RUNNING right!!!... fonts messed up, drop box app needs new install, cocktail needs upgrade, Fetch not working, memorized paths gone... back ups locked out of permissions... ***!!
4 hours on phone with apple and still no rsolution - to missing "settings". Seems there are THREE WAYS TO RESTORE (according to apply tech)... Running MIGRATE ASSISTANT and being able to choose your files, including settings, "R" RESTORE after they load a new OS... or NOW WAITING for them to send me a bootable 10.6.3 disk and then boot from disk, w/o installing OS and doing a restore from TM. I think this is done via the disk Utilties application.
So now can't back up without doing a full 400 GB back up since permissons are screwed and possibly destroying any good back ups... can't work, like having hands tied behind back. WAITING for solution! Very upset!!!
I did my first restore just like they said and now an 10 days without proper machine. Just FYI. I thnk I am going to make the store do the tech work so I have somthing to fall back on.

I'm having a problem with logging into a FileVault-protected user account after restoring from Time Machine backup.

Hi all,
My computer had been running really slowly for a while, so I decided to erase the whole hard drive and reinstall the operating system, and then I was going to restore the files I cared about from Time Machine. The main account, which had all my documents and photos, was FileVault-protected. The last thing I did before erasing the hard drive was to run one last Time Machine backup. As far as I remember, I always ran Time Machine backups with the FileVaulted user logged in.
I don't remember whether I was using FileVault 1 or 2. I had been using FileVault 1, but I installed Lion as soon as it came out and I thought I had migrated to FileVault 2 at that point.
Once I erased the hard drive and reinstalled the operating system, I browsed the Time Machine disk and, within the Users folder, there was no folder for the main user account. When I tried to reinstall everything by restoring from Time Machine backup, I'd get the option for all the user accounts, but when I tried to log in with the main one I'd get the dreaded "You are unable to log in to the FileVault user account "User" at this time. Log in failed because an error occurred." Finally, when attempting to restore from the Time Machine backup again, I noticed something strange: After the computer got to about 10% done restoring, it declared itself completed successfully and rebooted.
I've tried a number of tips that came up from questions about similar issues on the Apple support forum, but had no luck. Is there any way to get these files back? Did they ever even get backed up?
Thanks.

Hroodbwai wrote:
I can't find it! not sure what's going on but the only folder shown is the " Shared" folder.
Did you have only the one user account? If there were others, they should also be in the "Users" folder. You probably won't have access to the files inside them, but they should be there.
From what can make out, it looks like it's not backed up any of the files for the filevault account. Can't see user folder when looking through previous backups in Time Machine galaxy view.
Are you doing that from a Finder window set to your internal HD, or your computer name? It should look something like this (with the Finder in List view):
|
|
I'd been logging out and backing up manually on a regular basis.
Scheduled backups should run normally; but they won't back up the File Vault sparse bundle, nor will any run manually.
The only time it's backed-up is when you actually log out.
You should have seen this window on logout:
|
|
followed by this one:
|
|
If you didn't see the second one, or cancelled it, the account wasn't backed-up.

How do I create a recovery partition when restoring from Time Machine?

I am planning to replace the HDD in my Macbook Pro with an SSD. I've used Time Machine to backup my HDD (running Mountain Lion) but am trying to find the best way to restore my Time Machine backup to the new SSD once installed.
Given that the new SSD will not have a bootable OS X Recovery partition, I have created a bootable OS X Recovery drive on a USB thumb drive using OS X Recovery Assistant.
In order to ensure that the new SSD has the OS X Recovery parition, should I:
(1) reinstall Mountain Lion on the SSD then recover my data from Time Machine; or
(2) can I simply use the Restore from Time Machine option in OS X Recovery to do it all at once.
I can't seem to work out whether option (2) will create the OS X Recovery partition on the new SSD or just recover the system partition.

Turns out the OS X Recovery partition is only created on a fresh install of OS X. Restoring via Time Machine will not do the trick.

Installed a new hdd, want to install from time machine

I just had a new hdd put into my 2009 macbook. I was trying to reinstall all my files from time machine but only 60 of the 200gb appeared. What is my best course of action?
Thanks

No, there isn't any way to connect them, but it doesn't really make any difference - if you installed from disks, you use Software Update to keep it current. If you use the app store version, you download the latest update.
The thing that probably matters is that your serial number represents your license to use the software.

Can't reload iPhoto library from Time Machine

I ran into a problem with my iPhoto library this morning. I deleted it in its entirely, emptied iPhoto trash and then the general trash. When I tried to reinstall the iPhoto library from Time Machine, I was informed there was not sufficient free space on my hard drive to do so. I have a 500 GB hard drive and dumped over 4,000 pictures, yet had only 6 GB of space reported on my hard drive when I went to reload the library from Time Machine. I can't see how this is possible. I had sufficient space for the original library before I trashed it. According to the Information under File, I have pretty much the same amount of free space on my computer as I had before I dumped the library. I have run utilities (OnyX and Apple utilities). They identify no disk problems or problems of any kind. I've scanned for viruses. There are none. Does anyone have any ideas about what I can do to restore my library other than buy a new computer?
Thanks in advance for any help you can give.
Computer: early 2008
Software: OSX 10.9.5

Reboot and check the free space again. If still at 6 GB Boot into the Recovery volume (boot with the Command + R keys held down), select Disk Utility and repair both the disk permissions and disk. Reboot normally and check again.
Lastly you may have to reindex your hard drive: Spotlight: How to re-index folders or volumes - Apple

Reinstall using installer copied from Time Machine.

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