Re: Copying Mac MFS disks on an Apple II

[russotto@grace.speakeasy.net (Matthew Russotto)]

In article <20030903045807.07565.00000353@mb-m27.aol.com>,
Michael J. Mahon <mjmahon@aol.com> wrote:
>Jeff Blakeney wrote:
>
>>On Tue, 02 Sep 2003 13:01:00 GMT, "M. Pender" <mpender@hotmail.com>
>>wrote:
>>
>>>IIRC Mac HFS disk blocks are not the same size as ProDos disk blocks; there
>>>are a few extra bytes thrown.  I doubt that the 512 byte ProDos blocks will
>>>be very appealing to the Mac.
>>
>>ProDOS and HFS both used fixed block sizes of 512 byte blocks.  HFS+
>>supports variable block sizes but I'm almost positive the smallest
>>size they can be is 512 bytes and they must contain a number of bytes
>>that is a power of 2 (ie. 512, 1024, 2048).
>
>IIRC, the _actual_ physical block size on Mac floppies is 524 bytes.

Tags have been gone for many years.  I don't think anything but 400K
floppies had them, and MacOS never actually used them.
-- 
Matthew T. Russotto                            mrussotto@speakeasy.net
"Extremism in defense of liberty is no vice, and moderation in pursuit
of justice is no virtue."  But extreme restriction of liberty in pursuit of 
a modicum of security is a very expensive vice.