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- Path: d1o3.telia.com!usenet
- From: joachim.lundgren@karlskrona.mail.telia.com (Joachim Lundgren)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: 1.3/2.1/3.x FastFileSystem HD Incompatibilities? Manual/Date-Redirection Bu
- Date: 20 Mar 1996 00:35:13 GMT
- Organization: Telia Internet Services
- Message-ID: <7174.6653T83T1994@karlskrona.mail.telia.com>
- References: <1996Mar18.164301.6822@ibx.com>
- NNTP-Posting-Host: t14o2p3.telia.com
- X-Newsreader: THOR 2.22 (Amiga;TCP/IP) *UNREGISTERED*
-
-
- >[ 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])
-
- The 3.x software won't work on older machines, but you could make conditional
- assigns according to what system you are booting.
-
- >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.
-
- The manual probably means "as opposed to OldFileSystem (OFS)".
-
- >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??)
-
- Quick answer: yes.
- Longer answer: The manual probably means "as opposed to OldFileSystem (OFS)".
- You shouldn't be required to reformat the harddrive, unless you change the
- file system type (or something else, like the partitions).
-
- About the speed: The way the filesystem is used changed however between the
- Kickstarts you're having. You can use a disk organizer such as ReOrg (on the
- Aminet (eg. wuarchive.wustl.edu:/pub/aminet, somewhere in disk/*) to optimize
- for Kick1.3 or Kick2.0.
-
- >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 )?
-
- Yes, you will, but it's not necessary do that.
-
- > [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!!
-
- I seem to recall I used 12248-sized one when I used 1.3. Why the version for
- Release 2.1 is so much bigger I don't know (maybe incorporates the dircache
- version that was part of Release 3?)
-
- >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?
-
- Yes it is. FastFileSystem was placed in ROM in version 2, so it doesn't (or
- shouldn't?) exist in "L:".
-
- >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).
-
- For the non-bootable FFS partitions:
- GlobVec=-1
- DosType=0x444f5301
-
- I assume the boot-partition doesn't have a mountlist entry ;)
-
-
- >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!
-
- In your case you shouldn't use international mode. If you only use file names
- consisting of the US English characters it won't add anything with IM.
- (IM considers the files "σgren" and "┼gren" to be the same, whereas non-
- internation mode believes they are two files with different names.)
-
- >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?
-
- When the manual talks about the "newer FFS" they mean "the newer filesystem;
- which is FFS".
-
- >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!
-
- They have gotten the "less than/greater than" wrong, the line really should be
- 1> DATE >LastSavedDate
-
- The line they suggested would mean the arguments to the Date command was taken
- from the LastSavedDate file, not that the output from the command was written
- to it.
-
-
- >HELP!
- >-Jill
-
-
- Glad to have been of assistance (if I have been that ;)
-
- -Joachim
-
-