mark@osupyr.UUCP (Welchkin) (12/18/87)
We are running 4.3BSD on three MicroVAX IIs, for which we have recently acquired a set of Maxtor 380Mb ESDI disks.. These disks supposedly, for all intents and purposes, partition just like RD54 disks ... however, we lack the disktab information necessary to partition it (and since the disks use a UDA-50 controller/driver, diskpart does us no good.) If anyone has a disktab entry for an RD54, please oh please send me a copy. Thanks in advance... ----- Mark Welch / 2880 N High Street / Columbus OH 43202 / 614 447 8314 ----- ----- UUCP: cbosgd!osupyr!mark || mark@osupyr.uucp ----- ----- `More bowling balls, man! More bowling balls!' ----- -- ----- Mark Welch / 2880 N High Street / Columbus OH 43202 / 614 447 8314 ----- ----- UUCP: cbosgd!osupyr!mark || mark@osupyr.uucp ----- ----- `More bowling balls, man! More bowling balls!' -----
kg@elan.UUCP (Ken Greer) (12/18/87)
in article <358@osupyr.UUCP>, mark@osupyr.UUCP (Welchkin) says: > Xref: elan comp.sys.dec:470 comp.unix.wizards:5628 > > > we have recently acquired a set of Maxtor 380Mb ESDI disks.. > we lack the disktab information necessary Here is ours... m4380|M4380|Maxstor 4380 Winchester:\ :ty=winchester:ns#33:nt#15:nc#1222:\ :pa#32670:ba#4096:fa#4096:\ :pg#327690:bg#4096:fg#1024:\ :pb#65340:bb#4096:fb#512:\ :pe#178694:be#4096:fe#512:\ :pc#604394:bc#4096:fc#1024:\ :pd#0:bd#4096:fd#512:\ :pf#0:bf#4096:ff#512:\ :ph#0:bh#4096:fh#512: And a script to create the partion table ... if [ $# -ne 1 ]; then echo "Usage: $0 unit" exit 1 fi DEV=/dev/rra$1 set -x newfs -v ${DEV}a m4380 chpt -v -pa 0 32670 ${DEV}a chpt -v -pb 360360 65340 ${DEV}a chpt -v -pc 0 604394 ${DEV}a chpt -v -pd 0 0 ${DEV}a chpt -v -pe 425700 178694 ${DEV}a chpt -v -pf 0 0 ${DEV}a chpt -v -pg 32670 327690 ${DEV}a chpt -v -ph 0 0 ${DEV}a newfs -v ${DEV}a m4380 newfs -v ${DEV}b m4380 newfs -v ${DEV}e m4380 newfs -v ${DEV}g m4380 -- Ken Greer Elan Computer Group, Inc. 415-322-2450 {ames,hplabs}!elan!kg
wyatt@cfa.harvard.EDU (Bill Wyatt) (12/18/87)
To: mark@osupyr.UUCP Subject: Re: RD54 disktab entry needed! > > We are running 4.3BSD on three MicroVAX IIs, for which > we have recently acquired a set of Maxtor 380Mb ESDI disks.. > These disks supposedly, for all intents and purposes, partition just > like RD54 disks ... however, we lack the disktab information necessary > to partition it (and since the disks use a UDA-50 controller/driver, > diskpart does us no good.) If anyone has a disktab entry for an RD54, > please oh please send me a copy. Just because it's got a controller emulating MSCP doesn't mean you want the disktab for an RD54. Since MSCP hides the disk layout almost completely, it would in fact work anyway, but probably at a cost of inefficiencies in disk access/trasfer rate. What you want is to take the Maxtor's number of heads, #cylinders, and #sectors/track and work out a partition table. Now, the partition lengths in the table below are easily changed on an Ultrix system, using the chpt(8) utility. I think you may be stuck there on the 4.3 system, but for completeness I'll finish describing this. In any case, the mkfs should get the correct disk info to lay out the file systems. As I was saying, here's one we use for our Emulex QD21/Maxtor 4380 combination (also the same on a Webster controller, by the way): # Added 9/17/86 WFW + JT for Emulex QD21 + Maxtor 4380 disk subsystem # This is an RA emulator about 309 Mbyte formatted qd380|QD380|Emulex QD21 + Maxtor 4380 disk:\ :ty=winchster:ns#33:nt#15:nc#1218:\ :pa#16335:ba#4096:fa#1024:\ :pb#33165:\ :pc#602745:\ :pd#82170:bd#8192:fd#1024:\ :pe#471075:be#4096:fe#512:\ :pf#82170:bf#4096:ff#1024:\ :pg#471075:bg#8192:fg#2048:\ :ph#553245:bh#8192:fh#2048: Only the a, b, c, and h partitions seem to be useful. Notice that there are 34 sectors, but one is held back for on-track forwarding. There are also really 1224 or 1225 cylinders, but again some are kept for bad blocks. ***Ultrix info only!*** Most of these controllers tell the Ultrix RA driver that the disk is an RA81. This means that the first time you call newfs(8) after formatting the disk, it will write an RA81 partition table onto a reserved area in the `a' partition. What you do then is use chpt(8) to alter the partition sizes to conform to the above. You then redo newfs(8) for the `a' partition and then whatever others you're using. Note that you can't decrease the size of the `a' partition below 15884 sectors. I'm not quite sure why. -- Bill UUCP: {husc6,ihnp4,cmcl2,mit-eddie}!harvard!cfa!wyatt Wyatt ARPA: wyatt@cfa.harvard.edu (or) wyatt%cfa@harvard.harvard.edu BITNET: wyatt@cfa2 SPAN: cfairt::wyatt