silverdr_at_inet.com.pl
Date: 2008-01-01 15:00:05
On 2007-12-31, at 19:54, Jim Brain wrote:
> As stated before, I'd prefer to see the drive contain a std IDE boot
> sector
A little nitpicking - we probably all know what you mean but I
wouldn't call it "IDE boot sector" or "IDE partition scheme" as you
called it before. I believe the proper name is "PC-BIOS partition
scheme" and "MBR". IDE can use _any_ partition scheme.
> (with partition info), and put this stuff at the sector noted by the
> partition info.
> On the system-info sector, I'd be happy to look at 0x83, FAT,
> IDEDOS, etc. to come up with a common FS-boot block if you want.
Sounds good.
>> My LBA system can support 256 and 512 bytes sized sectors: if the
>> MS bit of the 4th byte of the link is set, then this sector is the
>> last sector of a file. The first byte, in case of a 512-bytes sized
>> sector the second byte as well, tells the system how many bytes of
>> this sector are used.
>>
> I'm assuming you're talking bit 31 of the link, right? Hehe, that
> means, of course, that one cannot use a sector above 1TB :-) no
> worries here. The only practical way we'll get there is if someone
> creates a partition on a >1TB disk near the end. 1TB disks being so
> common and all, in PATA format...
We should start buying PATA harddrives with capacities lower than 1TB
just like *NOW* - otherwise we may not be able to find a suitable
drive for our (Ruud's) device available on the market when we decide
we want one.. ;-)
>> I started with removing references to the second drive. I also want
>> to remove all references to the disk ID. As I cannot swap a disk,
>> why would we need a disk ID? Showing the directory, the first line
>> will display:
> On the disk, I think that is fine. However, I would still leave a
> spot on the DIRectory block for the ID and DOS-type (2A), in case
> someone wants to modify them.
>> 0 "DISKNAME " X-IDE
That's quite similar to what IDE64 does.
>>
>> 'DISKNAME' can be changed. Formatting of the disk can be done with
>> and without the ID option. With ID the system only accepts the
>> characters 'ID'. This because formatting a real disk will take
>> quite some time. You can compare it with the quick option for DOS
>> format.
>>
>> When writing this, I already removed the write protection routines.
>> But it just occurred to me it could come in handy. Your oppinion,
>> please!
I think it may not be needed all too often but I'd remove it only when
the available space become limiting - In other words - keep it now and
remove along with those you start removing when you run out of space.
> I'm not sure I understand this. You mean for "locked" files (>PRG)
> and all?
I _think_ Ruud was about routines that handle write protection on the
disk, right?
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