From: Kalle Olavi Niemitalo <[EMAIL PROTECTED]> To: Shane McDonald <[EMAIL PROTECTED]> CC: [email protected] Subject: Re: Installation problems with GRUB Date: 18 Jun 1999 11:54:35 +0300
Shane McDonald <[EMAIL PROTECTED]> writes:
> GRUB reported the error: > > Filesystem type unknown, partition type 0x55
Linux shows "[EZD]" in front of the partition information when it boots, doesn't it?
Partition type 0x55 is used by a driver which hooks the BIOS disk interrupt and translates disk geometry so that DOS can use the entire disk. The driver keeps your partitions inside the 0x55 partition. Linux detects the situation and uses them from there. Apparently Linux also fools fdisk into reading and writing the virtual MBR inside the 0x55 partition.
It seems GRUB doesn't understand the driver's partitioning scheme. As the disk doesn't contain anything important yet, you could erase its MBR and get rid of the driver. But since fdisk is seeing the virtual MBR, I don't think dd from Linux would get to the real one either.
Perhaps you could use the DOS fdisk to delete the 0x55 partition. But if the driver is on hda too, it gets loaded before DOS and hides itself. In that case, boot from a floppy.
Some of those drivers offer to boot from a floppy if you press Ctrl during boot. Don't use this feature -- the driver would get in memory. Tweak the BIOS settings instead.
Well, this was exactly my problem!
To resolve it, I did as suggested -- rebooted with my Windows 98 startup disk, used fdisk to remove the partition on the second drive, added in a new partition, then went through the process of re-installing the hurd on that new partition. I was then able to use GRUB to boot Hurd.
Thanks for the help!
Shane McDonald
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