[Coco] OS-9 Incremental Backups and how they might be done.

[Stephen H. Fischer]

This whole discussion about incremental backups IMHO is at the wrong level.

It appears that Gene wants to set a bit in a file when the file has been backed up and need not be backed up again.

Yes that is the way that MSDOS, Windows and perhaps Apple and Linux do it but it is unclear if we can free up the single bit.

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There have been several backup programs offered for OS-9 over the years.

They need to be looked at, perhaps the task has already been done or we can build on reducing the effort.

Spending our time looking for a solution that has already been done has more worth than looking for a bit that may never be found.

Start looking here  ftp://www.rtsi.com/OS9/OS9_6X09/ 

SHF

----- Original Message ----- 
From: "Tormod Volden" <lists.tormod at gmail.com>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Sunday, April 05, 2015 11:26 AM
Subject: Re: [Coco] Open Letter to those who will be attending the The 24thAnnual "Last Chicago CoCoFEST April 25-26, 2015


> On Sun, Apr 5, 2015 at 1:39 AM, Gene Heskett wrote:
>> backup. But it would have been a zero problem had people (including me)
>> invoked my advice about the SAS setting in the descriptor.  Or I should
>> have waited until I could figure out where to limit the segmnent table
>> to 47 entries.  Even on a floppy, it should never have been under $10,
>> and preferably $20.  The default of $08 has used up the segment tables
>> 48 entries at a file size of 98,304 bytes under the worst scenario
>> conditions.  That, at some point will be encountered on a 35Trk, SS
>> disk. Best scenario would be at 524,288 bytes, disk full before segment
>> table on all but 720k floppies.
>>
>> The repo's value has I believe been raised if Tormod had applied my
>> proposed commits.
> 
> What do you mean by that?
> 
> Tormod