Grub crashed?

powerxcat · 04-14-2015, 01:28 AM

Hello,

I have a brand new Acer E1-472G laptop, installed Win 7 and CentOS 6.6.
The installation is done successfully, but after the reboot, I cannot use up/down arrow to select the OS in GRUB, the highlight bar are not responding. I can only boot the OS by enter grub command line.
At the beginning, I thought maybe this problem will be solved by reinstall OS, so I delete all of the partitions, and reinstall Win 7 and CentOS 6.6 but no luck.

Grub screen:

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Press 'e':

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Press 'a':

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Any ideas?

Thanks in advance.

yooy · 04-14-2015, 08:49 PM

external usb keyboard works?

syg00 · 04-14-2015, 08:56 PM

And given that bootloader is no longer maintained, better to try the latest version of CentOS to get grub2 - much more likely to work with new equipment.

powerxcat · 04-14-2015, 08:58 PM

Quote:

Originally Posted by yooy

external usb keyboard works?

I have try to use a USB keyboard, but still doesn't works.

Thanks

powerxcat · 04-14-2015, 09:02 PM

Quote:

Originally Posted by syg00

And given that bootloader is no longer maintained, better to try the latest version of CentOS to get grub2 - much more likely to work with new equipment.

Some of software are only supported CentOS/RHEL version 6, so I cannot upgrade the OS version.
Is there any way to upgrade the grub on CentOS 6?

Thanks

syg00 · 04-14-2015, 10:01 PM

Somebody built it from source according to this.

A quick google implies it's not in the official repos, but may be available elsewhere. I don't have an old CentOS handy to check.

powerxcat · 04-15-2015, 01:25 AM

Quote:

Originally Posted by syg00

Somebody built it from source according to this.

A quick google implies it's not in the official repos, but may be available elsewhere. I don't have an old CentOS handy to check.

Thanks for your help.

This issue has been fixed by using Windows 7 boot loader instead of grub.
When choosing CentOS, the Windows 7 boot loader will call CentOS grub.

syg00 · 04-15-2015, 03:25 AM

Just be careful if updates come in - unlikely I know for 6.6. If CentOS thinks grub is in the MBR it will refresh it, and break the Win7 loader.
Should be just a niggle to watch for.

powerxcat · 04-15-2015, 05:52 AM

Quote:

Originally Posted by syg00

Just be careful if updates come in - unlikely I know for 6.6. If CentOS thinks grub is in the MBR it will refresh it, and break the Win7 loader.
Should be just a niggle to watch for.

Thanks for your advice, it's really important, I'll keep an eye on updates.