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#1
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Boot problems
Hi
I have recently bought an Asus CM 6730 PC with a 2TB hard drive. The drive was supplied with four partitions, 1) 100 MB System reserved ( I believe a boot partition). 2 a 19GB unnamed, I guess a recovery partition, 3) A 270 GB OS Partition and 4) A 1.4 TB Data Partition. When the PC was supplied it had W7 installed on the A 270 GB OS Partition, but I like the OS installed on the biggest partition as I have a lot of big graphics programs and files that work better for me if they are on the same partition, so I formatted drive 3 and 4 and installed W8 on the 4 (Data) partition, now the C: drive. It works well most of the time but about every three days when I start up the PC does not boot and I get a message "BOOTMGR is missing" I have tried running Fixboot from the CMD Prompt on the W8 Install disk repair my PC option, but the C: drive is not found, but when I go to C: it is found and I can run chkdsk /f /r after rebooting and the PC restarts okay, sometimes running the chkdsk, sometimes not. Can anyone let me know what may be happening, I suspect the issue may lie with conflicting boot sectors because I installed W8 without any knowledge of the Boot partition. Any advice on this issue is appreciated. Regards Daniel |
#2
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Boot problems
Daniel wrote:
Hi I have recently bought an Asus CM 6730 PC with a 2TB hard drive. The drive was supplied with four partitions, 1) 100 MB System reserved ( I believe a boot partition). 2 a 19GB unnamed, I guess a recovery partition, 3) A 270 GB OS Partition and 4) A 1.4 TB Data Partition. When the PC was supplied it had W7 installed on the A 270 GB OS Partition, but I like the OS installed on the biggest partition as I have a lot of big graphics programs and files that work better for me if they are on the same partition, so I formatted drive 3 and 4 and installed W8 on the 4 (Data) partition, now the C: drive. It works well most of the time but about every three days when I start up the PC does not boot and I get a message "BOOTMGR is missing" I have tried running Fixboot from the CMD Prompt on the W8 Install disk repair my PC option, but the C: drive is not found, but when I go to C: it is found and I can run chkdsk /f /r after rebooting and the PC restarts okay, sometimes running the chkdsk, sometimes not. Can anyone let me know what may be happening, I suspect the issue may lie with conflicting boot sectors because I installed W8 without any knowledge of the Boot partition. Any advice on this issue is appreciated. Regards Daniel best thing to do is delete all partions and reformate the drive. question the 19 GB partition did windows 8 recognise it's formate? If win8 did not recognise it's file formate that partition is more than likely linux question what did you do with the 19GB partition? |
#3
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Boot problems
Daniel wrote:
Hi I have recently bought an Asus CM 6730 PC with a 2TB hard drive. The drive was supplied with four partitions, 1) 100 MB System reserved ( I believe a boot partition). 2 a 19GB unnamed, I guess a recovery partition, 3) A 270 GB OS Partition and 4) A 1.4 TB Data Partition. When the PC was supplied it had W7 installed on the A 270 GB OS Partition, but I like the OS installed on the biggest partition as I have a lot of big graphics programs and files that work better for me if they are on the same partition, so I formatted drive 3 and 4 and installed W8 on the 4 (Data) partition, now the C: drive. It works well most of the time but about every three days when I start up the PC does not boot and I get a message "BOOTMGR is missing" I have tried running Fixboot from the CMD Prompt on the W8 Install disk repair my PC option, but the C: drive is not found, but when I go to C: it is found and I can run chkdsk /f /r after rebooting and the PC restarts okay, sometimes running the chkdsk, sometimes not. Can anyone let me know what may be happening, I suspect the issue may lie with conflicting boot sectors because I installed W8 without any knowledge of the Boot partition. Any advice on this issue is appreciated. Regards Daniel I can't tell you whether this will help, but I suspect Windows 8 sometimes has a problem with "spinning down" drives when they're idle. Something gets corrupted, and is not being handled properly. To stop that on the Windows 8 preview, I went to the Power Options control panel, and disabled disk spin down. If you set the disk spin down time to zero minutes, the display will change to "Never", indicating the function is effectively disabled. After I did that, I no longer had problems with my disks. The idea is to keep the disks spinning, so they don't change power states. Changing power states would not be a problem, if all levels of caching were being flushed properly. Another command you can do, is "powercfg -h off", which disables Hibernate, but that one is mainly so you have more complete control over booting, from the BIOS. If you don't disable the kernel hibernate, there's a tendency for the computer to ignore attempts to use the popup boot menu. Those are the two things I did to my new Win8 install, as discovered by testing the preview versions. Paul |
#4
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Boot problems
"Darklight" wrote in message ... best thing to do is delete all partions and reformate the drive. question the 19 GB partition did windows 8 recognise it's formate? If win8 did not recognise it's file formate that partition is more than likely linux question what did you do with the 19GB partition? Hi all four partitions are recognised in Disk manager but the "1) 100 MB System reserved ( I believe a boot partition). and 2 a 19GB unnamed," are not seen in Explorer. In Disk Manager 1 is NTFS the 2 file system is not stated but Casper 7 boot disk (a brilliant cloning/backup software) shows it a FAT32. BTW if I boot up with my W8 disk in the DVD drive the PC boots okay, I only just found this out. I did nothing with the 19GB partition but I believe it is used to make the recovery disk when you first start the PC. Appreciate your input Regards Daniel |
#5
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Boot problems
"Paul" wrote in message ... I can't tell you whether this will help, but I suspect Windows 8 sometimes has a problem with "spinning down" drives when they're idle. Something gets corrupted, and is not being handled properly. To stop that on the Windows 8 preview, I went to the Power Options control panel, and disabled disk spin down. If you set the disk spin down time to zero minutes, the display will change to "Never", indicating the function is effectively disabled. After I did that, I no longer had problems with my disks. The idea is to keep the disks spinning, so they don't change power states. Changing power states would not be a problem, if all levels of caching were being flushed properly. Another command you can do, is "powercfg -h off", which disables Hibernate, but that one is mainly so you have more complete control over booting, from the BIOS. If you don't disable the kernel hibernate, there's a tendency for the computer to ignore attempts to use the popup boot menu. Those are the two things I did to my new Win8 install, as discovered by testing the preview versions. Paul Hi is it possible that it is always the BOOTMGR that is corrupted, it is true that when the problem happens Windows want to scan and fix disk errors? Do I run "powercfg -h off" form CMD in Windows or from a DOS CMD from a Bootdisk? Thanks and regards Daniel |
#6
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Boot problems
I can't tell you whether this will help, but I suspect Windows 8 sometimes has a problem with "spinning down" drives when they're idle. Something gets corrupted, and is not being handled properly. To stop that on the Windows 8 preview, I went to the Power Options control panel, and disabled disk spin down. If you set the disk spin down time to zero minutes, the display will change to "Never", indicating the function is effectively disabled. After I did that, I no longer had problems with my disks. The idea is to keep the disks spinning, so they don't change power states. Changing power states would not be a problem, if all levels of caching were being flushed properly. Another command you can do, is "powercfg -h off", which disables Hibernate, but that one is mainly so you have more complete control over booting, from the BIOS. If you don't disable the kernel hibernate, there's a tendency for the computer to ignore attempts to use the popup boot menu. Those are the two things I did to my new Win8 install, as discovered by testing the preview versions. Paul Hi have change the disk spin down to Never but I still have the problem. New info is that the PC boots okay if the W8 install disk is in the DVD drive but the BOOTMGR problem now happens all the time if the Disk is not in the drive? Regards Daniel |
#7
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Boot problems
Daniel wrote:
Hi have change the disk spin down to Never but I still have the problem. New info is that the PC boots okay if the W8 install disk is in the DVD drive but the BOOTMGR problem now happens all the time if the Disk is not in the drive? Regards Daniel So whatever the repair thinks it is doing, is not working. On Windows 7, there were two partitions. A 100MB "System Reserved" partition, contained some boot stuff. The main C: held the rest of the OS. On Windows 8, at least here, it installed in a single partition. I don't know if it was supposed to do that or not. Since Windows 8 is on a separate disk, and connected to my motherboard right now, I can see a single partition for the OS, and it is marked "Healthy (Active)" in Disk Management. That means the boot flag is active on that partition. In terms of tools to work on the BCD, you have things like the free EasyBCD... http://en.wikipedia.org/wiki/EasyBCD or the built-in command line "bcdedit". You run the command line tools from an MSDOS prompt. In Windows 8, when you are looking at the tile view, you type in "cmd" without the quotes, and that should match the "cmd.exe" application. If you want to run that elevated, you'd try right-clicking on whatever the search returns, and select "Run As Administrator". If you want MSDOS to run as a regular user, then don't bother with the Run As Administrator step. The traditional MSDOS prompt should show up when you run "cmd.exe". (Picture of Run As Administrator...) http://www.file-extensions.org/imgs/...inistrator.png You can run the "powercfg -h off" there. And if you didn't like the result, run "powercfg -h on" later. ******* There is a tool "bootrec" here, which can be used to attempt to repair the BCD. I presume such a repair, would scan the computer for all Windows OSes, and try and build a menu so they're all available. http://support.microsoft.com/kb/927392#method1 There is also a bcdboot tool. It looks like, in principle, you might even be able to change a single partition install, into a two partition install with this. But using the "bcdboot C:\Windows" form of the command is likely enough to repair a single partition installation. http://technet.microsoft.com/en-us/library/dd744347 Some of the tools should be in the system, but occasionally you'll run into something that's only available in the recovery console. But cross that bridge when you get there. I haven't needed to repair anything on Win8 yet. Paul |
#8
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Boot problems
"Daniel" wrote in message ond.com... I can't tell you whether this will help, but I suspect Windows 8 sometimes has a problem with "spinning down" drives when they're idle. Something gets corrupted, and is not being handled properly. To stop that on the Windows 8 preview, I went to the Power Options control panel, and disabled disk spin down. If you set the disk spin down time to zero minutes, the display will change to "Never", indicating the function is effectively disabled. After I did that, I no longer had problems with my disks. The idea is to keep the disks spinning, so they don't change power states. Changing power states would not be a problem, if all levels of caching were being flushed properly. Another command you can do, is "powercfg -h off", which disables Hibernate, but that one is mainly so you have more complete control over booting, from the BIOS. If you don't disable the kernel hibernate, there's a tendency for the computer to ignore attempts to use the popup boot menu. Those are the two things I did to my new Win8 install, as discovered by testing the preview versions. Paul Hi have change the disk spin down to Never but I still have the problem. New info is that the PC boots okay if the W8 install disk is in the DVD drive but the BOOTMGR problem now happens all the time if the Disk is not in the drive? Regards Daniel Hi I fixed the MBR and all seems to be okay, having also changed the spin down time to never hopefully the BOOTMGR problem will not return. Thanks again for your help, regards Daniel |
#9
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Boot problems
Daniel wrote:
"Darklight" wrote in message ... best thing to do is delete all partions and reformate the drive. question the 19 GB partition did windows 8 recognise it's formate? If win8 did not recognise it's file formate that partition is more than likely linux question what did you do with the 19GB partition? Hi all four partitions are recognised in Disk manager but the "1) 100 MB System reserved ( I believe a boot partition). and 2 a 19GB unnamed," are not seen in Explorer. In Disk Manager 1 is NTFS the 2 file system is not stated but Casper 7 boot disk (a brilliant cloning/backup software) shows it a FAT32. BTW if I boot up with my W8 disk in the DVD drive the PC boots okay, I only just found this out. I did nothing with the 19GB partition but I believe it is used to make the recovery disk when you first start the PC. Appreciate your input Regards Daniel do you have a spare hdd lying around. If so disconnect the 2 tb drive connect the spare drive wipe clean and install win8 on that. Then you will know what to do with the 2 tb drive |
#10
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Boot problems
"Darklight" wrote in message ... Daniel wrote: "Darklight" wrote in message ... best thing to do is delete all partions and reformate the drive. question the 19 GB partition did windows 8 recognise it's formate? If win8 did not recognise it's file formate that partition is more than likely linux question what did you do with the 19GB partition? Hi all four partitions are recognised in Disk manager but the "1) 100 MB System reserved ( I believe a boot partition). and 2 a 19GB unnamed," are not seen in Explorer. In Disk Manager 1 is NTFS the 2 file system is not stated but Casper 7 boot disk (a brilliant cloning/backup software) shows it a FAT32. BTW if I boot up with my W8 disk in the DVD drive the PC boots okay, I only just found this out. I did nothing with the 19GB partition but I believe it is used to make the recovery disk when you first start the PC. Appreciate your input Regards Daniel do you have a spare hdd lying around. If so disconnect the 2 tb drive connect the spare drive wipe clean and install win8 on that. Then you will know what to do with the 2 tb drive All fixed, thanks for your input. Cheers Daniel |
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