| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 2097.1 | 26 cylinders for ST506 | COMET::MCGEE | | Tue Jan 10 1989 01:19 | 17 |
| Paul, If you have a copy of the 1.3 version, on pate A-3 it provides
guide lines for setting up an 880K partition on a 20MB ST506 as
follows:
BytesPerCyl = BlocksPerTrack x Surfaces x 512
BytesPerFloppy = 880 x 1024 = 901120
CylsToHoldFloppy = BytesPerFloppy/BytesPerCyl (round up the result)
This works out to 26 cylinders for the ST506 20MB.
I used this formula and doubled it to be able to put my workbench
and tools disk both on the initial partition. It worked ok and
I had a little room left.
-Jerry
|
| 2097.2 | yes but... | CIMNET::KYZIVAT | Paul Kyzivat | Tue Jan 10 1989 18:17 | 10 |
| I know how to leave a partition with enough blocks. But it appears
that DiskCopy copies by track or cylinder. If tracks and cylinders are
of different size on the hard disk than the floppy, then what does
DiskCopy do? Even if the copy is block by block, the partition will be
at least a little big (by a roundoff factor), so won't copying TO the
floppy get an error?
I guess I should just try it.
Paul
|
| 2097.3 | SDB works for me | DPDMAI::ANDERSONA | | Fri Jan 13 1989 22:05 | 8 |
| I use the program SDB. Just rename the hard disk partition to
Backup_1: then type "SDB -i df0: Backup_1:" After it is finished
rename the hard disk partition to whatever you want. SDB will copy
all files and directories the -i switch tusrcompression off. You
will end up with a copy of your floppy on the hard disk.
Alan
|
| 2097.4 | How to do it. | CHEOPE::ZABOT | Marco Zabot-Adv.Tech.mgr-Turin ACT | Tue Jan 17 1989 07:05 | 10 |
| Diskcopy won't work UNLESS the devices are the same ( you're right
Paul!)
The solution is simple, even if not elegant. Suppose your partition
is named HD-FOO , then
> Copy DFx: HD-FOO: all
does the trick. Is that what you're looking for ? ( it also recompat
the files )
|
| 2097.5 | I want an image copy of the floppy | CIMNET::KYZIVAT | Paul Kyzivat | Wed Jan 18 1989 08:54 | 12 |
| My hope was to be able to do an image copy of the floppy, on the
assumption that this is MUCH faster. Speed is the only reason I have
for doing it at all, such as when incrementally taking apart or
building a floppy. If I have to copy the floppy one file at a time I
might as well leave the data on the floppy.
Isn't it true that if I can find a way to copy the floppy block for
block (instead of track for track), then the old file system should
work on the copy in the partition? If so, all I need to do is write a
new copy utility.
Paul
|