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If anyone can use them, the attached ATR has several utility programs I've written. SORTDISK will sort the directory of any ATARI DOS disk (including DOSXL). Since Atari DOS stores the file number in every files data sectors, it will rewrite each file with the new file number. I am working on a new version that does not require data sectors to be rewritten FIXDISK will repair disks of common problems. Opening a file for output and not closing it can cause hidden directory entries that chew up space on your disk. Run this utility on your disks and if there are any errors it will report on them and repair them. If there are lost sectors on your disk it will give them back to you. UNDELETE will undelete a file as long as the data sectors in the file have not been reused by another file. If so, it will tell you that the file cannot be undeleted. RAMXL is very cool (if you are running on an XL machine). When using DOSXL, external commands such as COPY, DUPSK, etc. have to load into memory every time you use them. Rename RAMXL.COM as AUTORUN.SYS. On a DOSXL disk, change the extension of COPY.COM to COPY.MEM. You can rename up to four files (such as DUPDSK.MEM, INIT.MEM). When you reboot your disk, RAMXL will search for file with the MEM extension and store them beneath the OS. Now, to run any external command, prefix it with RUN 2300. For example, to copy a file your would key in RUN 2300 COPY <File A> <File B> Or to run DUPDSK you would key in RUN 2300 DUPDSK Finally, a hidden utility. Atari DOS will only let you store 64 files on a disk, even if it is a double density disk and has lots of room. This ATR was created with a utility I call DOS CD (capacity doubler). It will allow you to store up to 128 files on a DD disk. If you boot from this disk and then create new disks using INIT to rewrite your DOS files, the new disks will also have DOS CD on them. I hope someone finds this stuff useful. Utilities.atr