"Building boot caches" error when changing startup disk

Please,
Does anyone knw why, or how to fix this error? I have triedinstalling the 10.8.4 combo but keep getting "installation failed" error.
This is on my wifes brand new iMac. Here's the profile:
Hardware Overview:
Model Name:          iMac
Model Identifier:          iMac13,2
Processor Name:          Intel Core i5
Processor Speed:          3.2 GHz
Number of Processors:          1
Total Number of Cores:          4
L2 Cache (per Core):          256 KB
L3 Cache:          6 MB
Memory:          16 GB
Boot ROM Version:          IM131.010A.B05
SMC Version (system):          2.11f16
OS 10.8.4
Would greatly appreciate any assistance!!
Thank you,
Gary

Hello Mende1,
I ran both verify and repair on the 3TB internal and 4TB external HDs . . . both passed with flying colors.
I have used Techtoo Pro & DiskWarrior with no luck. I've been searching the web and there doesn't seem to be an answer. Bombich (Carbon Copy CLoner) said he felt it was a bug in startup disk selector in system preferences.
Thanks for coming to my aid.

Similar Messages

Changing startup disk.. help

I was attempting to gain access to an old external harddrive, so I downloaded a live CD. I changed the startup disk in the system preferences and restarted my computer. To my knowledge this was a one time change, meaning it would only target my DVD drive for one boot. So I used the live CD and I can't seem to eject it from my computer. Also, I can't force it to boot from my harddrive. I know keystrokes can initiate a different boot but nothing seems to work.
Somethings I have tried:
- While turning on the computer....
- option key
- C
- eject button
- Allowing the mac to boot into the live disk and attempting to eject the disk that way
Any help would be great. Let me know if I need to provide any more details. Thanks!

randomacct wrote:
I was attempting to gain access to an old external harddrive, so I downloaded a live CD. I changed the startup disk in the system preferences and restarted my computer. To my knowledge this was a one time change, meaning it would only target my DVD drive for one boot.
that's incorrect. changing startup disk in system preferences is a permanent change, not a one time change.
So I used the live CD and I can't seem to eject it from my computer. Also, I can't force it to boot from my harddrive. I know keystrokes can initiate a different boot but nothing seems to work.
Somethings I have tried:
- While turning on the computer....
- option key
holding option should have worked. what exactly happens when you reboot holding option? it should boot you into startup disk manager.
if this does not happen, try resetting PRAM
http://support.apple.com/kb/HT1379
then try option boot again. also, what kind of keyboard are you using? you may want to try a different keyboard, preferably a wired apple keyboard.
- C
- eject button
- Allowing the mac to boot into the live disk and attempting to eject the disk that way
Any help would be great. Let me know if I need to provide any more details. Thanks!

Error "Building boot caches on boot helper partition failed" when installing Yosemite

I Have a MacBook Pro 8,3 17" and have been running OSX Maverick 10.9.5 quite happily. I finally decided to bite the bullet and update to OSX 10.10.1. I went through the App Store and clicked install on the Yosemite offered there.
THe install took about 55 mins and then right at the end it reported: Building boot caches on boot helper partition failed, install failed.
now i can't boot normally or restore from my time machine backup.
can anybody suggest a fix?

Install OS X Using Internet Recovery
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
Boot to the Internet Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND-OPTION- R keys until a globe appears on the screen. Wait patiently - 15-20 minutes - until the Recovery main menu appears.
Partition and Format the hard drive:
Select Disk Utility from the main menu and click on the Continue button.
After DU loads select your newly installed hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed. Quit DU and return to the main menu.
Reinstall OS X: Select Reinstall OS X and click on the Install button. Be sure to select the correct drive to use if you have more than one.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
This should restore the version of OS X originally pre-installed on the computer.

Yosemite will not install and won't let me change startup disk, it's saying there is a file system problem but disk utilities can't fix it.

I Downloaded the Yosemite upgrade and went to install it on my iMac. The install failed saying file System needed repair. Ran disk utility could do the verify but the repair button was grayed out. When I tried to change startup disk back it wouldn't let me , saying it couldn't gather enough file info. So I'm stuck and can't boot my Mac. How do I get out of this?

Do a backup. Boot to the Recovery Volume (command - R on a restart or hold down the option/alt key during a restart and select Recovery Volume). Run Disk Utility Verify/Repair and Repair Permissions until you get no errors. Try to reboot normally.
OS X Recovery
OS X Recovery (2)

Boot camp no longer on startup disk bless tool unable to set boot disk

iOS 10.6.8 boot camp no longer on startup disk msg says 'bless tool unable to set boot disk'

solved my own problem. a simple restart did the trick.

Bootcamp - I'm trying to install windows 8 on my MBPr but getting an error when partitioning the disk. 'An error occurred while partitioning the disk'

I'm trying to install windows 8 on my MBPr but getting an error when partitioning the disk. 'An error occurred while partitioning the disk'

You posted your Bootcamp question in the Macbook Pro forum. Your question has been asked and answered many times in the Bootcamp forum. https://discussions.apple.com/community/windows_software/boot_camp
When you post in the Bootcamp forum include the complete and exact error message.

I get an error that says that LR5 encounterd a preview cach error when trying to start LR5 and that it will try to fix it the next time it starts. What can I do to fix this error?

I get an error that says that LR5 encountered a preview cache error when trying to start LR5 and that it will try to fix it the next time it starts. What can I do to fix this error?

Go to the folder with you Lightroom Catalog (usually in Pictures) and delete the folder ending in .lrpreviews
This contains the previews for the files Lightroom has linked to. They will need to be rebuilt which can be done while working or selecting an amount you want to rebuild and accessing the rebuild command in the Library Dropdown menu...

What can i do when my startup disk is full?

what can i do when my startup disk is full?

what can i do when my startup disk is full?

Changed startup disk and now iMac won't boot, even to CD, can't zap PRAM

So maybe I did something really bad, but I can't imagine that I've fried my logic board, right? I changed the startup disk to an external CD/DVD drive with a linux boot CD inserted. I rebooted the computer and got just a grey screen. I decided that this computer was not capable of booting from the linux CD. Forced the power off by holding down the power button. I turned the computer back on and removed the linux CD. Now my computer will not boot at all. I get a grey screen, then after a long period, the folder with a flashing question mark.
I tried booting to my system restore CD in order to switch the startup disk back to my internal HDD, but it will not boot to CD, even when holding the 'C' button. I disconnected the external drive after trying to boot from CD using the external or internal CD drive. I tried resetting the PRAM, but the computer will not do this. I noticed that perhaps the keyboard is not being powered because I can't turn CAPS LOCK on and get a green light.
What else could I possibly try before taking a trip to the genius store? I look forward to your ideas.

So get this. I replaced the original keyboard on this computer and was just informed that only the original kybd will work for system startup commands. Since I no longer have the original kybd, the only was to switch the boot drive is use the IR remote that came with the computer, by holding the 'menu' button and using FF and RED buttons to make selection.

Integration Builder - runtime data cache - Error when creating cache list

All,
When I go into the Integration Builder --> Administration --> Runtime tab --> Data Cache
I get a message saying "Error when creating cache list".
All cache areas look ok and I do not see any other error.
Also, RFC INTEGRATION_DIRECTORY_HMI looks good.
Please advise.
Thanks a lot.

Hi,
Use transaction SXI_CACHE to update the Integration Directory cache. Alternatively, you can use the following URLs to update the CPA cache. Use XIDIRUSER to refresh the cache.
For complete cache refresh u2013 http://<hostname>:<port>/CPACache/refresh?mode=full
For delta cache refresh u2013 http://<hostname>:<port>/CPACache/refresh?mode=delta
If this does not solve the issue, check transaction SLDCHECK to ensure that connection to SLD is available. If the connection fails, check the configuration in the transaction SLDAPICUST. Make sure that the password maintained is correct and the maintained service user is not locked.
Now in the Integration Repository go to Environment u2192 Clear SLD Data Cache. Also go to Integration Directoy and clear the cache using menu Environment u2192 Clear SLD Data Cache.
Open the XI Start Page and click on Administration. On the Repository tab, choose Cache Overview. Refresh the cache using the buttons/icons on the right. Use XIDIRUSER to refresh the cache. Carry out cache refresh in the same way on the Directory and Runtime tabs.
regards,
ganesh.

I am having problems trying to boot from my Windows XP startup disk.

PLEASE HELP ASAP! I upgraded my MacBook Pro 17inch laptop for a larger hard drive. I had my MAC and Windows XP partitions re-installed but I am not able to boot from Windows XP partition. I can see both operation systems in the system preferences of the STARTUP DISK section but when I shutdown my computer and hold down the OPTION key there is no WINDOWS XP icon. I keep getting the error message: NO BOOTABLE DEVICE. INSERT BOOT DISK AND PRESS ANY KEY.
I have a very important project to complete this Friday and all of my files are on my PC partition. Could someone please help me to figure out how to get my PC drive to start rebooting? I would sincerely appreciate it. Thanks!

courtesy of the following site:
http://www.builtfromsource.com/2008/04/05/a-match-made-in-****-windows-xp-boot-c amp-20-and-ntfs/
Feel like wasting several hours? Try installing Windows XP with Boot Camp 2.0 (the version released as part of Mac OS X 10.5 Leopard) using NTFS, the file system required for partitions larger than 32 GB. Then watch as it fails miserably, again and again.
Windows could not start because the following file is missing or corrupt:
<Windows root>\system32\hal.dll.
Please re-install a copy of the above file.
Sound familiar? You didn’t do anything wrong—this is actually Apple’s fault. Hal.dll, the “hardware abstraction layer”, doesn’t have any particular significance; it just happens to be the first file that Windows looks for as it’s loading. Attempting to replace this file with the copy on disk won’t work, and your boot.ini is probably fine.
So how do you fix it, then? The solution is a bit involved, but not too bad all things considered. Here are the steps:
If you haven’t already removed the bad installation, you’ll need to do so. In OS X, open Boot Camp, click Continue, select “Create or remove a Windows partition”, click Continue, and then click Restore.
Create a new partition as you did before, and start the installation.
After the computer has rebooted and it’s booted from the CD, type “R” to go to the console. You should be dumped to the C:\ prompt.
We’re going to reformat the drive as NTFS ourselves instead of letting the Windows installer do it. Type the following and hit Return:
format c: /q /fs:ntfs
Then type this to reboot the computer:
exit
Hold Option after it restarts, then boot to the Windows installation CD again (I believe it boots to the CD by default at this point, but this is just to be sure).
Install to C: (be careful not to select your OS X volume!), but—and this is important—choose NOT to reformat. Leave the file system as is.
Continue the installation process as you would normally.
That’s it! If things went well, the lovely 256-color Windows logo should load and you’ll be looking at Napa Valley in no time.

Reload sequence file when changes on disk

Hi,
I wrote a custom user interface based on the TestStand (TS) Operator Interface. When I run a sequence file on it and I edit it in the TS editor and I restart an execution, it seems to keep loading the first one when I launch the execution. The only way I can do this is by restarting the GUI.
I read a lot and tried many things and I can’t figure out what do I need to do to have the sequence file reload from disk on the 2nd execution after changes has been made.
I tried many thing and it seems to work when I release the seq file 2 times (!). But, as expected, the 2nd time it get released, I get an error that the file was unloaded from the TestStand Engine. And the weird thing is that I don’t get the error when I run the 1st time or I don’t make changes to the seq file.
Do you see anything wrong? Or have another suggestion how I could achieve that?
Can I see which seq files are in the internal cache? That could be useful to debug.
Thank you.
A code snippet in C# is in attachement.
Attachments:
C#-code.rtf ‏2 KB

A few more ideas:
1) Are you perhaps using this file path with an ApplicationMgr or SequenceFileViewMgr API? You need to make sure that this file is not open by the ApplicationMgr or assigned to a sequencefileviewmgr as well. The applicationmgr or sequencefileviewmgr likely have a strong reference to the sequence file if you have assigned it or opened it with one of their APIs. You might want to try switching entirely to the applicationmgr APIs instead of using the engine APIs as that's probably less likely to lead to conflicts between the two.You could try ApplicationMgr.OpenSequenceFile() and ApplicationMgr.CloseSequenceFile().
2) Have you tried this with a simple, empty sequence file and simple default Sequential process model to verify that it's not related to anything in the sequence file you are running or any code elsewhere in your application? It's possible for code in the sequence or process model itself to be calling GetSequenceFile or GetSequenceFileEx.
3) Have you tried adding a delay between WaitForEndEx() and ReleaseSequenceFileEx()? This is not that likely to be the cause, but perhaps there is additional code required to execute in the execution thread after WaitForEndEx returns before the sequence file can be unloaded. If you add a small delay (i.e. Thread.Sleep(1000) between those lines of code it might work. This would not explain why the file couldn't be reloaded when you use GetSequenceFileEx with the UpdateFromDisk flag though so probably is not the problem.
I tried to reproduce this problem in the sequence editor by running an
execution with a sequence file, closing the sequence file, overwriting
it with a different sequence file and reopening it and I was unable to
reproduce the problem. I got the new file opened as expected. This is
the equivalent situation since there is a completed execution still
open. The sequence editor does not use the Unload flag on
ReleaseSequenceFileEx, but it does use the UpdateFromDisk flag on
GetSequenceFileEx() and it seems to work, correctly loading the new
version of the file in this case. So there must still be something different in your case. I suspect that it's not the execution that has the extra reference in your case, but something else, perhaps the ApplicationMgr or SequenceFileViewmgr.
Also, as a side issue, if you are writing a custom UI, I'd recommend using UIMessages to determine when an execution completes rather than WaitForEndEx(). Basically handle the ApplicationMgr.UIMessageEvent and look for UIMsg_EndExecution and check that the execution associated with the UIMessage is the one you care about. Using the UIMessage like this has a couple of advantages:
1) It allows your UI to go back to executing in it's main message processing loop (Some things will not work correctly without this).
2) It gives you the potential to track and handle running multiple executions in parallel. Just look for and track the multiple UIMessages that such executions generate.
Please let us know if any of these ideas helps or if you are able to figure out the cause of the problem. If you are still unable to get it working and can't figure out the cause, please attach an example program and sequence files which reproduce the issue.
Hope this helps,
-Doug
Message Edited by dug9000 on 03-02-2010 10:03 AM
Message Edited by dug9000 on 03-02-2010 10:04 AM

IMac G3 freezing after changing startup disk?

Hello.
I bought a iMac G3 I few months ago just for a hobby and have been playing around on it.
This morning I noticed two other previous system folders in the system folder.
I then opened "startup disk" (I think that is the name) and chose to restart with "Previous system folder".
When it re-booted it opened up differently, had a new background and made sound effects when clicking and scrolling.
I decided to change the startup disc to "Previous system folder1" (which is the other previous system folder)
This time when restarting it booted normally until the desktop icons loaded. The mouse and keyboard froze and then a message popped up saying "To use your internal modem you need to select the country from where you will be using your computer". I try to use the mouse and keyboard to select, "Australia" and then "OK" but as previously started the mouse and keyboard are frozen.
When booting up I can use the mouse and keyboard on the loading screen until it freezes when the desktop appears.
(The computer was working amazingly before I stupidly changed the system folder)
Why is this happening. How do I return to a previous system folder when it keeps freezing.
Here is a youtube video showing you what happens:
https://www.youtube.com/watch?v=uYURgG2W5x4
Please note, I do have all the software CD that came with computer, however for some reason discs won't work on the computer they are unrecognizable.
All keyboard commands do nothing for example holding down shift into safe mode still freezes.
Thanks in advance!
Stewart

I'm not sure what OS you are running here.
There is a way to set what os boots from the firmware. Not sure how.   Look tomorrow. let me know via another post.
For classic, you could try hold the
space bar
then booting. or is it the shift key?
If this is a slot loader, try:
The startup manager will list all of your bootable partitions then give you a choice of which to boot. Hold down the option key then power on. Continue holding down the option key until you see the startup manager. This brings up the startup manager. Click on your hd or disc. Click on right arrow key.
Restore Tiger 10.4 & Leopard 10.5 DVDs are available from Apple by calling 1(800) 275-2273. Have your serial number ready. Have your credit card ready too. There may be a small fee.
https://discussions.apple.com/thread/4720126?tstart=0 -- January 20,2013
https://discussions.apple.com/message/24588313#24588313 -- January 22,2014
gical Macintosh Key Sequences
http://davespicks.com/writing/programming/mackeys.html
http://davespicks.com/writing/programming/mackeys.pdf
Mac OS X keyboard shortcuts
http://support.apple.com/kb/HT1343
Startup keys
http://macs.about.com/od/macoperatingsystems/qt/osxstartupkeys.htm
I have a list of magical boot key sequences:
    Key Combinations-- Effect
    * mouse down -- Eject removable media ( I think Boot ROMs prior to 2.4f1 excluded the CD drive )
    * opt -- Bring up OF system picker on New World machines.
             iMac g3 400 or newer machine
    * cmd-opt -- Hold down until 2nd chime, will boot into Mac OS 9 ?
    * cmd-x (or just x?) -- Will boot into Mac OS X if 9 and X are on the same partition and that's the partition you're booting from.
    * cmd-opt-shift-delete -- Bypass startup drive and boot from external (or CD). This actually forces the system to NOT load the driver for the default volume, which has the side effect mentioned above. For SCSI devices it searches from highest ID to lowest for a partition with a bootable system. Not sure about IDE drives.
    * cmd-opt-shift-delete-# -- Boot from a specific SCSI ID # (# = SCSI ID number)
    * cmd-opt-p-r -- Zap PRAM. Hold down until second chime.
    * cmd-opt-n-v -- Clear NV RAM. Similar to reset-all in Open Firmware.
    * cmd-opt-o-f -- Boot into open firmware
    * cmd-opt-t-v -- Force Quadra AV machines to use TV as a monitor
    * cmd-opt-x-o -- Boot from ROM (Mac Classic only)
    * cmd-opt-a-v -- Force an AV monitor to be recognized as one
    * c -- Boot from CD. If set to boot to X and no CD is present, may boot to 9.
    * d -- Force the internal hard disk to be the startup device
    * n -- Hold down until Mac logo, will attempt to boot from network server (using BOOTP or TFTP)
    * r -- Force PowerBooks to reset the screen
    * t -- Put FireWire machine into FireWire Target Disk mode
    * z -- Attempt to boot using the devalias zip from first bootable partition found
    * shift -- (Classic only) Disable Extensions
    * shift -- (OS X, 10.1.3 and later) Disables login items. Also disables non-essential kernel extensions (safe boot mode)
    * cmd -- (Classic only) Boot with Virtual Memory off
    * space -- (Classic only) Trigger extension manager at boot-up
    * cmd-v -- (OS X only) show console messages during boot
    * cmd-s -- (OS X only) boot into single user mode
Did not work simply 'z'?
You could buy an external DVD drive. It needs to be firewire and bootable by Mac OS. If you have another PPC with firewire, you could try target Disk mode and installed tiger that way.
You need to figure out the level of your firmware before installing 10.2 or greater. ( The PC name for firmware is BIOS. ) Installing 10.2 with a down level firmware will most likely make your iMac unusable and difficult to fix.
What is Open Firmware?
The firmware on a PPC is called Open Firmware. Open Firmware software receives control when you poweron your machine. It does some hardware testing and some hardware configuration then passes control to your version of Mac OS.   It reside on a PROM ( program read only memory ) chip on the logic board.
Figuring out what level of Open Firmware you have?
1) Mac OS 9.x or 8.x, you need to use the Apple System Profiler.
Apple -> Apple System Profiler
2) Mac OS X, use the System Profiler.
Apple -> About This Mac
click on the More Info... tab
click on Hardware
read the Boot ROM Version
3) Open Firmware, boot into Open Firmware.
Power on your iMac while holding down command+option+o+f
The first output line contains the firmware level. Mine reads:
Apple PowerMac4,1 4.1.9f1 BootRom built on 09/14/01 at 13.18.04
Copyright 1994-2001 Apple Computer Inc.
On my machine, I have 4.1.9f1.
What firmware do you need?
http://support.apple.com/kb/HT1395
You can download the firmware from this page:
http://support.apple.com/kb/DL1283
filename: N-iMac_FWUpdate_4.1.9.smi.bin
                avoid   expanding the file on the download computer.
For a slot loading iMac, this article indicates that you need to be running 9.1 or later version of Mac OS Classic.
http://support.apple.com/kb/DL1283
"The iMac Firmware Update 4.1.9 will only run on iMac computers with slot-loading CD or DVD drives running Mac OS 9.1 or later from a local drive. If you are using Mac OS X you must boot from a local Mac OS 9.1 or later writeable partition (not a CD, or network disk) prior to following the update instructions."
You can download the Mac OS 9 updates from the Apple site.
http://support.apple.com/kb/HT1387?viewlocale=en_US
For tiger, you need 256meg of memory. A slot loader will take 1gig of memory.
You may need to get more memory.
get the 512meg card(s)
http://eshop.macsales.com/shop/apple/memory/iMac/G3_450MHz_500MHz_600MHz_700MHz
Mac OS X 10.4: System requirements
http://support.apple.com/kb/HT1514
PPC 10.4.11 combo update.
http://support.apple.com/kb/dl170

Trying to change startup disk HELP!

Using alsoft diskwarrior. Changed the startup disk in the preferences to the CD. Now, can't change it back! The computer automatically reverts to the diskwarrior software to boot from...ideas?

Restart the computer and hold the mouse button down to force ejection of the CD. The computer will then start normally. Then open the Startup Drive preference and set the startup drive to the internal drive and click on the Restart button.
In the future you don't need to change the startup disk to boot from a CD/DVD. Simply insert the disc in the optical drive, restart the computer and after the chime press and hold down the "C" key until the gray startup screen appears. Release the key when the spinning gear appears.
Why reward points?(Quoted from Discussions Terms of Use.)
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Members may reward you with 5 points if they deem that your reply is helpful and 10 points if you post a solution to their issue. Likewise, when you mark a reply as Helpful or Solved in your own created topic, you will be awarding the respondent with the same point values.

MBA doesn't boot with Ethernet plugged in /Startup disk ok

Hi everyone
My Macbook Air running OS X no longer boots when the ethernet cable (via USB adapter) is plugged in - it gets stuck at the grey screen. It starts booting as soon as I unplug it.
I have already reset the startup disk, but to no success...
Internet works fine when I plug it in after starting up.
Does anyone have another idea?
many thanks

Volker1 wrote:
I've got a suspicion that the Thinkpad bios/efi is not simply executing the first stage bootloader, but looking around on the GPT disk and then crapping its pants when it doesn't find Windows.
Right now I have a MBR-formatted harddisk in the ultrabay with the bootloader in the MBR. Once I get the bootloader off the MBR disk, I can easily continue to boot from my GPT-formatted SSD.
Yes, it seems that it's a BIOS bug at least on T520, T420s and W520 laptops. Even in "Legacy" mode first stage bootloader doesn't execute if partition type is 0xEE (GPT).
Hope Lenovo developers will fix it. They fixed something on BIOS 1.31
[Problem fixes]
- Fixed an issue where the computer might not be booted from bootloader program.
but it doesn't work for now. Pity.

"Building boot caches" error when changing startup disk

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