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Author Topic: <Fixed>Grub Error 21  (Read 555 times)

Offline Ray2047

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<Fixed>Grub Error 21
« on: December 30, 2010, 07:12:14 PM »
Not sure which forum so move if I'm in the wrong forum.

I originally had the Grub for this install on HDB. The install is on HDA. When I reinstalled I chose HDa for Grub. It in fact did install Grub on HDa. The problem is it still boots to HDb first then boots to Grub on HDa  then boots HDa from that Grub on HDa.

I thought disconnecting HDb would solve the problem but it didn't. I get to stage 1.5 and then Error 21. Research seems to indicate this is a CMOS error. I have went into CMOS and checked that boot order is correct, CD then HD. Only the one HD is shown after disconnect of HDb. The drive HDa is SATA so no jumper problem. The disconnected drive, HDb,  is PATA.
« Last Edit: December 31, 2010, 12:21:37 PM by Ray2047 »
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Offline Old-Polack

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Re: Grub Error 21
« Reply #1 on: December 30, 2010, 11:14:51 PM »
Quote from: Ray2047 on December 30, 2010, 07:12:14 PM
Not sure which forum so move if I'm in the wrong forum.

I originally had the Grub for this install on HDB. The install is on HDA. When I reinstalled I chose HDa for Grub. It in fact did install Grub on HDa. The problem is it still boots to HDb first then boots to Grub on HDa  then boots HDa from that Grub on HDa.

I thought disconnecting HDb would solve the problem but it didn't. I get to stage 1.5 and then Error 21. Research seems to indicate this is a CMOS error. I have went into CMOS and checked that boot order is correct, CD then HD. Only the one HD is shown after disconnect of HDb. The drive HDa is SATA so no jumper problem. The disconnected drive, HDb,  is PATA.

When there is more than one hard drive you must also select which hard drive is to be the boot drive. With both SATA and PATA drives involved you may also have a place to choose SCSI or IDE first. All settings must be properly coordinated.
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Offline Ray2047

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Re: Grub Error 21
« Reply #2 on: December 30, 2010, 11:43:27 PM »
Quote
When there is more than one hard drive you must also select which hard drive is to be the boot drive. With both SATA and PATA drives involved you may also have a place to choose SCSI or IDE first. All settings must be properly coordinated.
Yes, that was my understanding but I haven't found anything in the bios other then set boot order. Will look in Bios again. Maybe even RTFM.

Award Bios   Gigabyte GA-M68M-S2p

Thank you for the reply.
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Offline Ray2047

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Re: Grub Error 21
« Reply #3 on: December 31, 2010, 12:22:18 PM »
Quote from: ongoto on December 30, 2010, 07:54:48 PM
Did you run grub setup again after removing the other drive?
That did it. Thank you.
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