Is it possible to align 2 drives one to one?
ZXNet echo conference «hardware.zx»
Hello, All
The question is, is it possible in principle to configure the heads on two 5'25 drives?
so that they are !!absolutely!! Are they the same in terms of reading and writing disks? A
It’s a shame that you write on one, but on the other only half of the disk can be read normally
and vice versa :) Damn it’s inconvenient :)
Hello, Evgeny Muchkin
Evg> The question is, is it possible in principle to configure the heads on two
Evg> 5'25 drives so that they are !!absolutely!! identical in terms
Evg> reading and writing disks? And it got so bad that you write on one and on the other
Evg> only half of the disk can be read normally and vice versa :) It's damn inconvenient :)
In 1995 I wrote a program, I think it was called DiskUst.
It can be adjusted very accurately.
Hello, Mikka_A
Mik> my bones are still shaking as I remember the roar with which they made
Mik> walked along the paths....
Turbo VG rules ;) I recommend :) + lubricate the guides with Vaseline.
Hello, Mikka_A
Thanks for the advice. :) Now a question about the test floppy disk. Does it make sense
rely on a PC drive (Epson, with a button to eject the disc, as in
3'5; I don’t remember the model) to create it? Japan after all ;) Or in the PCs
According to statistics, disk drives also have different heads?
Hello, Mikka_A
Quote from the book "disk drive repair":
Master disk
This is a disc recorded on a reference drive, with all its tracks except
zero, registered with codes "0". The zero track is registered with codes "1".
Mike, can you burn a couple of discs, one like this ^ and the other a regular TR-DOS?
There are suspicions that the previous owner of these wildcats climbed there playfully
handles, and perhaps knocked the heads relative to each other... perhaps it was
I ;) I'll oscilloscope here. :)
Hello, Mikka_A
Mik> well, I don’t know.
Mik> everything is learned by comparison...
Mik> just experiment. :v2_thumb;
Mik>; I would do this...
Mik> and ideally, of course, it would be cool to find a written text in TE
Mik> time 5.25 disk...
Mik> preferably on TEAS....
If anyone needs it, I can record a floppy disk on my Teac or Robotron.
Hello, Mikka_A
I once adjusted disk drives on Scorpio using the built-in ROM
disk test. The undoubted convenience of this test is that it begins
read the floppy disk from the last tracks, where errors usually occur
with broken heads. You will tune the last tracks, and the first ones will be read according to
default. Thus, the adjustment did not take much time at all.
Hello Titus
Tit> In 95 I wrote a program, I think it was called DiskUst.
Tit> It can be adjusted very accurately.
You can adjust using any disk utility, starting with dcu, the main thing is
that’s not the point ^^ the process is quite labor-intensive, to some extent even creative
^^ first we determine which drive is configured on average
better, write a test floppy disk on it, and then take a screwdriver and, tightening
bolt(s), we drive the floppy disk on the second drive until 100% reading. other
It seems like they haven’t come up with a way.
Hello, CityAceE
Cit> I once adjusted disk drives on Scorpio using the built-in
Cit> in ROM test disks. The undoubted convenience of this test is that
Cit> that it starts reading the floppy disk from the last tracks on which, as
Cit> rule, and errors occur when the heads are knocked down. Set up a follow-up
Cit> tracks, and the first ones will be read by default. Thus the adjustment
Cit> did not take much time at all.
exactly!
I remembered - I used a specialist to drill a hole in the back wall of the drive, opposite
stepper motor, and cut a thread there - then moved the motor to the side
screw, and slowly tightened the screw until all the tracks were read with a bang...
pralna.
So I picked up the dead teak, and rebuilt our not unknown
tractor ELECTRONICS.
my veins are still shaking as I remember the roar with which they walked along
tracks.... :v2_ohmy; :v2_laugh:;
Tolley is a matter of TIC - peace and quiet. :v2_clap2:
Hello, Evgeny Muchkin
Evg> The question is, is it possible in principle to configure the heads on two
Evg> 5'25 drives so that they are !!absolutely!! identical in terms
Evg> reading and writing disks? And it got so bad that you write on one and on the other
Evg> only half of the disk can be read normally and vice versa :) It's damn inconvenient :)
In ancient times, I adjusted it with a banal copier and formatter -
look at the triangles - and you will be happy.
The main thing is that the process does not take place the next day after the libations, and hands
shaking :v2_laugh; -; for indeed the process is not so much difficult as
painstaking and time consuming.
Hello, Evgeny Muchkin
Evg> Thanks for the advice. :) Now a question about the test floppy disk. Does
Evg> it makes sense to rely on a PC drive (Epson, with an eject button
Evg> disk, as in 3'5; I don’t remember the model) to create it? Japan after all
Evg> ;) Or, according to statistics, PC drives also have different heads?
Well, I don't know.
everything is known by comparison...
just experiment. :v2_thumb;
I; I would do that...
and ideally, of course, it would be cool to find a written kemnit in THAT time 5.25
disk...
preferably at TEAS....
Hello Titus
Tit> DiskUst made it possible to clearly determine the boundaries of ideal reading
Tit> after which, installing the head in the middle of the range, we get
Tit> perfect alignment
I would love to use your utility, but I can’t find it anywhere.
Share if you can, please. :)
Hello Cyrax Inc.
cyr> can be adjusted using any disk utility, starting with dcu,
cyr> this is not the main thing ^^ the process is quite labor-intensive, to some extent
cyr> even creative ^^ first we determine which drive
cyr> is configured better on average, we write a test floppy disk on it, and
cyr> then we take a screwdriver and, tightening the bolt(s), we drive the floppy disk onto
cyr> second drive up to 100% reading. there seems to be no other way
cyr> came up with.
DiskUst made it possible to clearly determine the boundaries of ideal reading, after which,
By installing the head in the middle of the range, we get perfect alignment
Hello, Evgeny Muchkin
Evg> I would love to use your utility, but I can’t find it
Evg> nowhere. Share if you can, please. :)
Yes yes!
I would love to use it too!
PS.
2all. Who remembers what needs to be done to have a flop of 5.25" but not 720 but 1.2MB to the specie
add?
(honest - I don’t remember whose flop)
and also - I remember the trick that there were some resistors on the bus, and they were installed according to
mine, the last one in the garland....
huh?
Hello, Mikka_A
Mik> Who remembers what needs to be done to have a flop of 5.25" but not 720 but 1.2MB k
Mik> should I add some spessiness?
Do a search, this has been discussed here.
Hello, Evgeny Muchkin
Evg> I would love to use your utility, but I can’t find it
Evg> nowhere. Share if you can, please. :)
To do this, you would have to dig through a bunch of disks.
I'll look in MagicSoft's collection. If I find it, I'll post it