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- Path: news.delphi.com!usenet
- From: jdow@BIX.com (Joanne Dow)
- Newsgroups: comp.sys.amiga.misc
- Subject: Re: Formatting Hard Drives>2gig
- Date: 2 Apr 1996 10:54:14 GMT
- Organization: Delphi Internet Services Corporation
- Message-ID: <4jr10m$7uo@news2.delphi.com>
- References: <19960329.7BAF540.95CA@ccubb.com>
- Reply-To: jdow@BIX.com (Joanne Dow)
- NNTP-Posting-Host: bix.com
- X-Newsreader: NetBix 1.253
- X-Newsreader-Author: lwilton@BIX.com (Loren Wilton)
- This message has been posted with development version software.
- If there are any problems with the message format, send me mail.
-
- In article <19960329.7BAF540.95CA@ccubb.com>, devans@ccubb.com (David Evans) wrote:
- >
- >I have run into a "bug" which I can't explain. I recently aquired a Quantum
- >Grand Prix drive (nice critter) and have been attempting to format it. My
- >Fastlane card initially formatted it with:
- >
- > 22669 Cylinders 7 heads, and 52 blocks per track
- >
- >According to the specs of the Grand Prix however it has:
- >
- > 20 heads, 4066 tracks (cylinders?), and 118 sectors per track
-
- Does not matter in the least with Amigas.
-
- >Using my fastlane setup, I get r/w errors on my last partition on that drive.
- >It appears that the "format" of the head/blocks/cylinders execeeds the
- >capacity of the drive (guess). When re-configured to the specs of the Grand
- >Prix (20,4066,118), it works.
-
- Not unlikely. You are playing with a 4.1gig drive there. There is a portion of
- the drive you cannot reach with the basic OS facilities as they are presented.
-
- 1) Make sure no partition is even a gnosh over 2gigs. (And if you are an
- excitable sort make the partitions smaller. Revalidating a nearly full 2gig
- partition is heart attack city it takes so long.)
-
- 2) Either get one of the addon devices that allow use of drives larger than
- 4gigs as multiple psuedo-drives each less than 2 gigs or abandon the last 100Meg
- of the drive.
-
- 3) Manually construct your partitions using an editor then flog it onto the disk
- with RDPrepX, the low level portion of RDPrep. That is what we found we had to
- do here with Loren's Grand Prix. Here is a section of the mountfile (rdprepx
- readable) that we produced:
-
- /* RigidDiskBlock. */
- QUANTUM XP34301 1051: disk = scsi.device
- Unit = 3
- BytesperBlock = 512
- Cylinders = 2040
- Heads = 32
- BlocksPerTrack = 64
- CylinderBlocks = 2048
- RDBlow = 5 ; RDBhi = 2047
- MinCyl = 1 ; MaxCyl = 2039
- Interleave = 1
- HiLun = TRUE
- HiID = TRUE
- HiDrive = TRUE
- Reselect = TRUE
- #
- /* Partition. */
- WB_2.x: device = scsi.device
- Unit = 3
- Flags = 0
- /*! ReadOnly = FALSE */
- FileSystem = l:FastFileSystem
- StackSize = 4096
- GlobVec = -1
- Surfaces = 32
- BlockSize = 512
- BlocksPerTrack = 64
- Reserved = 2
- Interleave = 0
- LowCyl = 402 ; HighCyl = 441
- PreAlloc = 0
- Buffers = 30
- BufMemType = 0
- DOSType = 0x444f5301
- MaxTransfer = 16777215
- Mask = 0x7ffffffe
- BootPri = 3
- Mount = 1
- /*! Bootable = 1 */
- #
- /* Partition. */
- Work: device = scsi.device
- Unit = 3
- Flags = 0
- /*! ReadOnly = FALSE */
- FileSystem = l:FastFileSystem
- StackSize = 4096
- GlobVec = -1
- Surfaces = 32
- BlockSize = 512
- BlocksPerTrack = 64
- Reserved = 2
- Interleave = 0
- LowCyl = 442 ; HighCyl = 819
- PreAlloc = 0
- Buffers = 30
- BufMemType = 0
- DOSType = 0x444f5301
- MaxTransfer = 16777215
- Mask = 0x7ffffffe
- BootPri = 0
- Mount = 1
- /*! Bootable = 0 */
- #
-
- Just continue that on out modifying things for the partition sizes you want.
- Just do *NOT* go past 4gigs or things will wrap and destroy interesting portions
- of your RDBs and first partition. Make sure that 4398046511104 is greater than
- the product of surfaces * blockspertrack * blocksize * (highcyl + 1).
-
- {^_^} Joanne Dow, Amiga Exchange Editor on BIX, aka The Wizardess
- jdow@bix.com, jdow@delphi.com, jdow@earthlink.net
-
-