
  ŁĄDISK`ED PROGRAM User Guide
   Preliminary Documentation, May 1994

() 1994 Esquimalt Digital Logic Inc. All Rights Reserved

Disk`Ed is a disk sector editor. It allows the user to inspectdisks sector by sector and to change information if required.

This program was written as a debugging aid. Only personsfamiliar with disk formats should use it. Explaining the DOS/GEM diskformat is beyond the scope of this preliminary document.

To the user familiar with disk sector editors, this one will bepretty much old hat. Points of interest are:

* The information can be edited in hex in the hex area, or in ASCIIin the ASCII area. The cursor must be placed using the mouse.

*  Bit insert and delete allow attempts to restore data from badsectors (if the computer's disk routines supply the bad data to theprogram - the Atari fills it with zeros).

* Byte insert and delete are available. If more than 8 bytes areinserted, information from the end of the sector is lost: subsequentdeletion won't bring back any more bytes than that.

* Click on the drive to get to the next drive. Watch for clicking inthe very corner, since that will just cause the window to come to thefront instead of changing the drive. The button ought not to be rightin the corner. Physical ACSI and/or SCSI units are scanned for afterthe logical drives have been found. The Falcon's internal IDE drivecannot be located as a physical unit.

* The sector number can be edited as well as changed with the scrollbar. Click on the sector number shown to place the cursor and editthe sector.

* The disk's BPB is used to determine how many sectors the disk issupposed to have. If the disk isn't GEM/DOS format, or if the BPBisn't right, the sector scroll bar will not work properly.

* Don't use Import -- From". It was an early option and should havebeen removed.

* Dragging from Disk`Ed creates a file of the sector in the Memorydirectory. Text files lost on a disk can be pasted together from theindividual sectors if they can be located, and other sectors ofinterest can be saved. This does not follow the OMEn interfaceproperly: drag to anywhere, not just the memory directory, and thefile will be created in memory.

* Sectors may be duplicated by clicking on Copy Sector". Aftercopying, the option changes to Paste Sector". One sector can becopied to another in this manner.

* The scroll bars (top one for sector and bottom one for scroll ofthe view within the sector) are not live scroll. Just click where youguess you would like it.

* Write: Oh yes, I nearly forgot. You can overwrite the currentsector by clicking here. There Ľis¤ a verify" menu which aborts theoperation if you click anywhere but Ł!! Overwrite Sector !!˘".

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