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Author Topic: Drives in HDToolBox not detected full size (CHS settings?)  (Read 11262 times)

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Offline Thomas

Re: Drives in HDToolBox not detected full size (CHS settings?)
« on: December 30, 2016, 10:21:57 AM »
Quote from: LoadWB;818398
Either way, the number in detection does not match the number in installation, and I would like to think the program is consistent.


It is. Find out the true total number of blocks and increase the number of cylinders until the displayed number of blocks matches the true one as close as possible. In order to keep the number of cylinders small I would also change the number of heads to 16 so that you get 4096 blocks per cylinder.

You can use this program to find out the true total number of blocks: http://thomas-rapp.homepage.t-online.de/downloads/hddreport.lha

Offline Thomas

Re: Drives in HDToolBox not detected full size (CHS settings?)
« Reply #1 on: December 30, 2016, 07:13:08 PM »
30333 cylinders * 16 heads * 256 sectors = 124243968 sectors

Matches exactly, no wasted sectors at the end. And partitions aligned to 2-megabyte boundaries should meet all alignment requirements.

Offline Thomas

Re: Drives in HDToolBox not detected full size (CHS settings?)
« Reply #2 on: December 30, 2016, 10:59:45 PM »
"heads" = tracks per cylinder
"sectors" = sectors per track
sectors per cylinder = heads * sectors

So:

Cylinders = 330333
Heads = 16
Sectors per Track = 256
Sectors per Cylinder = 4096

Offline Thomas

Re: Drives in HDToolBox not detected full size (CHS settings?)
« Reply #3 on: December 31, 2016, 07:43:23 AM »
Quote from: LoadWB;818481
My 3.9 installation is missing some stuff


More details needed.


Quote
the 3.1 installation said (never did before) that my 2GB partition didn't have enough room for Fonts.


Then the partition is bigger than 2GB. For 3.1 everything above 2 GB is negative. Put some big files on the partition so that free space shrinks below 2 GB. After installation these files can be deleted.


Quote
I'm assuming one of the benefits is less confusing size issues, but what others?


A new scsi.device does not fix bugs in HDToolbox and other programs, therefore size issues won't change.