HD SERIES HARD DRIVES

Affordabe High-Capacity Storage for Commodore C=64 and C=128 Computers!  

Performance
 
HD Series Hard Drives are  designed to be the fastest mass-  storage peripherals available for the  C=64 and C=128. When connected on the  serial bus to a completely stock  computer, HD Series drives out perform  all other serial bus drives (including  the 1581 ) by a wide margin. If your  computer is equipped with JiffyDOS,  performance in 128 mode is nearly  doubled, with performance in 64 mode  ([0;37mor with a C=64 ) being brought up to  the same level. And, when connected to  the parallel port of CMD's RAMLink, HD  Series drives become as fast as the  hard drives found on newer, more  expensive machines.
 
 Compatibility
 
A specially-designed operating  system ( DOS) gives HD Series drives  the ability to work with nearly all  commercial software. The HD Series DOS  fully supports all Commodore DOS  commands, including Block Reads and  Writes, Memory access commands, and  Fast Serial 'burst' commands. Special  operating modes are also built in to  provide complete compatibility with  GEOS and CP/M. Another feature of the  HD Series operating system is that it  is stored on the hard drive itself and  not it ROM. This means that DOS  upgrades can be installed quickly and  easily without disassembly.
 
Ease of Use 

The HD Series DOS provides you  with the tools to easily organize and  access the large amounts of data you  will be storing. Partitions of up to  16 Megabytes are supported and can be  set aside exclusively for GEOS or CP/M  use, if desired. Subdirectories can be  created within partitions and within  other subdirectories. The number and  size of subdirectories is limited only  by the available space on the drive.  Any directory can be the default, and  the path to a file anywhere on the  drive can be specified within a single  command. In addition, files can be  easily copied between different  partitions and subdirectories. 
 
 Additional Information 
 
  We all know that the drives size is only a little longer than a 1581 and it uses a 3 1/2 inch disk. And it's for  the C=64 and C=128, also fully  supports GEOS and CP/M! Right? Well lets see if i can say something  here that we don't know.
 
  The drive itself can be modified to  100 megs in the single case and up to 4 GIGABYTE's otherwise!!  Works just like a 1581 and can be  partitioned the same way, hooks to the  serial port so you can still piggyback  other drives, use's a parallel  interface through RAMLink (more on  RAMLink later) that speeds the drive up considerably, fully supports JiffyDOS,  so if you have JiffyDOS in your  computer you will have that speed  added to the drive. It also can be  interfaced with Amiga, IBM-compatible  and Macintosh computers in case you plan to upgrade in the future you can  still use the hard drive..