cvs commit: src/sbin/gpt gpt.8 gpt.c show.c

Marcel Moolenaar marcel at
Fri Jun 23 01:45:06 UTC 2006

On Jun 22, 2006, at 6:35 PM, Maxim Sobolev wrote:

> Marcel Moolenaar wrote:
>> On Jun 22, 2006, at 5:00 PM, Maxim Sobolev wrote:
>>> Marcel Moolenaar wrote:
>>>> marcel      2006-06-22 22:22:32 UTC
>>>>   FreeBSD src repository
>>>>   Modified files:
>>>>     sbin/gpt             gpt.8 gpt.c show.c   Log:
>>>>   Improve support for Intel based Macs:
>>>>   o  Accept hfs as partition type.
>>>>   o  Print Apple HFS partitions using a friendly name.
>>> While we are on subject, I have a patch which makes geom_gpt  
>>> friendly to the disks partitioned using BootCamp. Basically, for  
>>> compatibility with non-GPT operating systems, BootCamp creates  
>>> three records in the MBR: one GPT protective, covering the whole  
>>> unit, the second one for HFS and the third one for non-Apple  
>>> operating system. However, since geom_gpt considers protective  
>>> MBR to be invalid unless it's the only valid MBR record, it  
>>> doesn't attaches to such disk.
>>> Do you have any objections to lifting such check?
>> I don't mind changing geom_gpt to work for Intel based Macs, but I'd
>> like to avoid simply removing checks and thus accepting just about
>> anything. I'd like to keep the checks strict enough that we don't try
>> to interpret garbage as partition information. If we allow the PMBR
>> to have actual partitions, I'd like to extend the checks to cover
>> the partition information itself. For example, we now check that the
>> table only has partitions of type 0xEE (if at all). This is a sloppy
>> test by any standard. If we allow "normal" partitions, I'd like to
>> enforce that there's exactly 1 partition of type 0xEE and it covers
>> the whole disk. This way we make sure that it's still pretty much a
>> PMBR by intend, even though it really is used as an MBR.
>> Does that sound reasonable to you?
> Thanks, that's exactly what my patch does!

Perfect, feel free to commit!

  Marcel Moolenaar         USPA: A-39004          marcel at

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