Thanks for the tips! :) Aaron.
allison via cctalk writes: > If you have a system that can create/format SSSD (base RX01 media > format) RT11 can > reformat that as RX02. Of the top of my hear the command is INIT and > you specify the > drive and /double. It cannot format a blank disk but it can set a RX01 > format to > double density. > > Note a RX02 on a PDP-11 will not boot RT11 if it has the RX01 boot drive > in place, you must have > the RX02 driver built into the boot. > > Whenever you have a disk fail its advisable to check the heads for crud > buildup (on RX01, RX02, > or RX33 and RX23) as sometimes the binder on the media goes to goo and > coats the head. If > that happens the next good disk can have the media gouged off. Been > there done that. I > always test new media (dir /bad) on drive 2 so if it fails the system > still boots and likeliness > of munging the boot media is lower. > > I use my S100 CP/M crate for format blanks for RX01 and using R11CPM I > can copy files > between the two system (sneakerware). > > To read a RX02 formatted disk you must have a RX02 or one of the > functional equivalents like a DSD > or Emulex. PCs cannot without a special board. > > A slick trick for Qbus 11s is install a RQDX2/3 and put a RX33 or RX23 > drive on that as the formats > they use are PC readable at the base ODS. I managed to get a few RQDX3s > just for that in the various > Qbus 11s I have. Even if you do not have a MFM hard disk for the > RQDX2/3 is a good choice for floppies > and it can format media. It also can store more on the media. > > > Allison > > > > On 12/16/2017 04:21 PM, Jerry Weiss via cctalk wrote: >> Glad to hear that you cleared that up. >> >> For the other floppies. >> >> 1) DUMP/TERM/RAD50/END:0 DY1: >> If you share the listing that will give us some hints as to the OS on >> the floppies. >> >> 2) DIR/BAD DY1: >> will do a bad block scan to see if can read all of the blocks on the >> media. It >> does not require an RT11 directory, despite the command name. It uses >> the utility DUP.SAV with the K option, not DIR.SAV You will hear the >> floppy >> reset if it sees a bad spot as it attempts a retry. The number of >> retries >> is configurable via a SET command. >> >> For files with an RT11 Directory, DIR/BAD/FILES will include the file >> name >> of files affected by unreadable blocks. >> >> You can do the same with the RL02 Drives. >> >> Jerry >> >>> On Dec 16, 2017, at 2:28 PM, Aaron Jackson via cctalk >>> <cctalk@classiccmp.org> wrote: >>> >>> I just checked all of them in RT-11, out of 12 floppies, two of them >>> were bad, or at least I am unable to perform dir in RT-11. >>> >>> My source of confusion comes from both A) not being able to boot from >>> any of them, and B) not being able to dump them using vtserver. The ones >>> labelled RT-11 don't actually have RT-11 on them, just some random >>> files, and these were the ones I had tried to boot from. >>> >>> I'm not sure why vtserver doesn't seem to work though. I have Kermit in >>> RT-11, is there a way to dump the other drive over this? I would like to >>> put LSI Unix on one of the floppies, can this be done with Kermit too? >>> >>> While on the topic of vtserver, it also doesn't seem to like my RL02 >>> drive. If I try to write to it or dump a cartridge, it tells me that it >>> was unable to read the labelsector. About the thing vtserver has done is >>> launch itself over odt. >>> >>> RT-11 is unable to list the files on the RL02 drive, but maybe they are >>> UNIX or maybe they are dead packs... >>> >>> Thanks, >>> Aaron. >>> >>> >>> systems_glitch via cctalk writes: >>> >>>> We've gotten around the formatting issue by formatting SSSD using ImageDisk >>>> on a regular PC (with a floppy controller that supports single density/FM, >>>> of course). If you want RX02 media there's an XXDP routine to upconvert >>>> RX01s to RX02s. >>>> >>>> Thanks, >>>> Jonathan >>>> >>>> On Sat, Dec 16, 2017 at 2:02 PM, Chuck Guzis via cctalk < >>>> cctalk@classiccmp.org> wrote: >>>> >>>>> On 12/16/2017 10:43 AM, Fred Cisin via cctalk wrote: >>>>>> On Sat, 16 Dec 2017, Aaron Jackson via cctalk wrote: >>>>>>> Well, would you believe it. It was the disks after all. I can't believe >>>>>>> they are all bad! >>>>>> I can believe it. >>>>>> Were they "bad"? >>>>>> Or just not what they were labelled as being? >>>>> I suspect that they weren't formatted to the 3740 spec (26/128 FM). >>>>> ISTR that the RX02 doesn't have formatting abilities. >>>>> >>>>> The other possibility is that the disks were DS rather than SS >>>>> (different index aperture position). >>>>> >>>>> --Chuck >>>>> >>>>> >>>>> >>> >>> -- >>> Aaron Jackson >>> PhD Student, Computer Vision Laboratory, Uni of Nottingham >>> http://aaronsplace.co.uk >> >> >> -- Aaron Jackson PhD Student, Computer Vision Laboratory, Uni of Nottingham http://aaronsplace.co.uk
