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- Newsgroups: comp.sys.amiga.hardware
- Path: ibx.com!zim
- From: "Jill E. Howe" <ojeh@sunyit.edu>
- Subject: 1.3/2.1/3.x FastFileSystem HD Incompatibilities? Manual/Date-Redirection Bugs?
- X-Sender: ojeh@pool.info.sunyit.edu
- X-Nntp-Posting-Host: pool.info.sunyit.edu
- Message-ID: <1996Mar18.164301.6822@ibx.com>
- Followup-To: poster
- Sender: usenet@sunyit.edu (USENET News System)
- Organization: SUNY Institute of Technology at Utica/Rome
- Date: Mon, 18 Mar 96 16:43:01 GMT
- X-Lines: 114
-
- [ This was cross-posted by Ms. Howe to all of the Amiga newsgroups ]
- [ including comp.binaries.amiga. As moderator of comp.binaries.amiga, ]
- [ the article was sent to me. I am posting her article here in the ]
- [ hardware newsgroup since this is where it probably belongs. ...zim ]
-
- I hope somebody out there can help this Amiga Lady get her trusty ole
- Amiga running...
-
- My system is set up to be switchable between 1.3 and 2.1 (3.X when I can
- get it). I bought it this way, but am now ready to customize it further,
- and add a second HD. The 2.1 manual has left me confused. (I also have
- 3.0 on an A1200 but I don't know how much of it would run on my main
- machine...an A1000 w/Spirit XT-ST506 HD interface [BTW I'm looking for
- another XT/ST506/MFM/RLL controller])
-
- All partitions, except my 1.3 boot partition are of DosType= 0x444F5301.
- That's the "standard" FFS. The manual claims if I reformat using the
- newer FFS, HD I/O will be faster. I need to keep 1.3 compatibility.
-
- When in 1.3 mode (hopefully rare), I want to be able to access selected
- (but not necessarilly all) partitions. Ideally I'd like access to all
- partitions to be as fast as possible. This implies using (some version
- of) the FFS at all times. The manual says several cryptic things on that
- topic... HERE'S THE CRUX of my problems/questions:
-
- For increased speed/efficiency, my 2.1 manual suggests reformatting the
- HD using the "newer" (2.1) FFS.
-
- Q: If I do this will I still be able to access these partitions when
- running v1.3 of the OS? (I presume I must do something special? I can
- read all partitions now, but speed is poor-- Strangely, I can access all
- partitions TWICE AS FAST when running 1.3 KS/WB. Why is this??)
-
- Q2: Assuming I reformat using the 2.1 FFS, Will I be able to access these
- newer/faster FFS partitions if I copy the special FFS handler included
- with the newer OS (2.1 and above) to the 1.3 system-boot-partition/dir (ie.
- Aboot:L )?
-
-
- [I tried copying the the 2.1 supplied "improved FFS for 1.3 switchable
- systems" to my 1.3 boot:L dir, but if I recall it couldn't read my FFS
- partitions-or speed was horrible. Whichever it was I had to go back to
- using the existing 1.3 FFS handler. The filesizes are below, just in case
- it's important.)
-
- } Dir "Aboot:L/Fast*" on Saturday 16-Mar-96 {1.3 WorkBench Boot Partition}
- } FastFileSystem 12248 ---arw-d 16-Oct-90 22:49:40 (1.3.X
- version of FFS handler)
- } FastFileSystem2.1 22464 ----rw-d 06-Apr-93 23:10:47
-
- Interestingly the original FFS on my old 1.3 WB disk was smaller:
- 12204--dated 13-Aug-88!!
-
-
- The manual suggestion to delete references to "L:FastFileSystem" and
- "GlobVec=-1" (and mention of DosTypes) is rather contradictory. It also
- says not to change existing mountlists. I interpret this to mean to
- remove references to "L:FastFileSystem" and "GlobVec=-1" on the 2.1 System
- partition, but to leave them intact on the 1.3 side (assuming the special
- disk-based FFS handler for 1.3 that comes with 2.1 has been installed on
- the 1.3 bootdisk).]
-
- Q: Is this a valid assumption?
-
-
- Q2: Assuming it's faster and workable to use the "improved FFS-handler for
- 1.3" that comes with 2.1, what should my mountlists say about the
- partitions? What do I use for GlobVec if anything? What should DosType
- be? I know my boot partition should stay "as is", which I think
- is OFS (I don't know if 1.3 or my controller/driver will autoboot from a
- FFS partition).
-
-
- Q: International Mode-- The manual says "International mode
- should generally be used when you format a disk partition that will be NOT
- used with pre-Release 2 Amigas." So what does this mean to me? That I
- can or can't use IM? They give you a special disk-based FFS for 1.3/2.1
- systems then imply you can use it!
-
- The manual says:
- Dostype FileSystem
- ---------- -------------
- 0x444f5301 Standard FastFileSystem
- 0x444f5302 Old FileSystem International Mode (HUH? Is this a misprint?)
- 0x444f5303 FastFileSystem International Mode
-
- THE BURNING QUESTIO:
- Q:If I can't use the International Mode on a 1.3/2.1 switchable system, and
- the list above implies there's only TWO kinds of FFS, then WHY does the
- manual tell me I should *reformat using the NEWER FFS*? I can fathom that
- the provided "special disk-based FFS for 1.3/2.1" would be faster, but why
- then, if there's no actual change in the format itself (as implied by the
- above DosType list), does the manual suggest that *reformatting will
- improve HD speed by up to 2X?
-
- Q: Is there a Newer FFS that's better than the 1.3 versions, but isn't
- International Mode? If so what's it's Mountlist parameters? (ie.
- DosType, GlobeVec if any, etc.)
-
- Or is it as simple as using DosType 0x444f5303 (FFS IM) but then turning
- off the International Mode when doing the actual format?
-
- Maybe these are silly questions, but the manual isn't very good! Take
- for example the glaring errors regarding the DATE command & file redirection:
- My 2.1 AmigaDOS manual says on page 1-12 that you can redirect file
- contents to the date command like so:
- 1> DATE <LastSavedDate
-
- But it doesn't work! This same inaccuracy still exists in my 3.0
- AmigaDOS manual. So you can see why I don't trust the manuals!
-
- HELP!
- -Jill
-