Re: ATA 4 KiB sector issues.

From: H. Peter Anvin
Date: Wed Mar 10 2010 - 00:17:51 EST


On 03/09/2010 04:14 PM, Daniel Taylor wrote:

The MBR in a GPT installation doesn't map the first GPT partition, it maps
the entire drive
drive after the first sector, as well as marking it type 0xEE. The start
LBA of the file system
is not correctly located in the MBR.

I will run some experiments to see if any of the systems on my desk can boot
Linux from a GPT.

There is something called a "hybrid MBR", which is basically a GPT disk with a single partition (the current bootable partition) mapped as an MBR partition, instead of marking the whole disk 0xEE.

-hpa
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