800_Rocks Posted June 11, 2021 Share Posted June 11, 2021 May be a silly newbie question... I am using my APE to USB to make .ATR files/images of many real/physical diskettes using both a Happy 1050 and an indusGT drives. Later I look at some of the resulting .ATR files within the ATR Image Explorer (a great tool). On some images I see one or more .DAT files that always have names of the form: FILE_0x.DAT as in the 2nd picture. What are these? My guess is these were files that were 'deleted' therefore they are not found in the Directory (3rd picture) but their data sectors are still found/read by ProSystem. Is this the case? Note: ProSystem did not report any errors when it read this particular disk image '01a.ATR' What are the 3 .DAT files circled in red? Note 5 of the file names in the Directory are not listed above. Where these 5 files deleted? Maybe ATR Image Explorer has a bug in that it is not displaying FILE_02 or FILE_04? 1 Quote Link to comment Share on other sites More sharing options...
FULS Posted June 11, 2021 Share Posted June 11, 2021 Maybe those 3 Dat files are in a hidden Directory located elsewhere on the disk. Might be some form of protection to keep people from hacking (modifying) the program disk. Don't know, I'm just giving suggestions. Quote Link to comment Share on other sites More sharing options...
+Larry Posted June 12, 2021 Share Posted June 12, 2021 Thanks for mentioning the ATR Image Explorer. I don't think I had heard of it before. Looks very interesting, so I'll check it out. Quote Link to comment Share on other sites More sharing options...
glurk Posted June 12, 2021 Share Posted June 12, 2021 Those DAT files have lengths of 018,023, and 004 in decimal. These exactly correspond to the three files having lengths of $12,$17, and $04 in hex. Sector 361:050, :060, and :070. I'm used to reading directory entries in hex from sector editing, LOL. Looks like they were not deleted properly. Quote Link to comment Share on other sites More sharing options...
TGB1718 Posted June 12, 2021 Share Posted June 12, 2021 4 hours ago, Larry said: Thanks for mentioning the ATR Image Explorer. I don't think I had heard of it before. Looks very interesting, so I'll check it out. It's here: great utility https://github.com/rossumur/esp_8_bit/blob/master/atr_image_explorer.htm 1 Quote Link to comment Share on other sites More sharing options...
PVbest73 Posted October 21, 2023 Share Posted October 21, 2023 (edited) Hi, I know I'm a little late, but this has been fixed in the ATR Image Explorer new upgraded tool, that I proposed here : https://pvbestinfoo.github.io/atari8-bit_rom_image_file_explorer.html which I've named Atari 8-bit Rom Image File Explorer Please check my detailed answer I made on this issue on GitHub : https://github.com/rossumur/esp_8_bit/issues/36 The issue was a buggy handle of 1040-sector-disk DOS2.5 directory Before / after screenshot examples here after: Cheers! Edited October 21, 2023 by PVbest73 1 1 Quote Link to comment Share on other sites More sharing options...
FULS Posted October 21, 2023 Share Posted October 21, 2023 Does this tool find hidden directories on ATR files? Quote Link to comment Share on other sites More sharing options...
PVbest73 Posted October 22, 2023 Share Posted October 22, 2023 (edited) Yes hidden DOS directories, and hidden DOS files. When loading an image file, the Atari 8-bit Rom Image File Explorer tool : first detect if it is a disk type and which type by checking mainly its extension: XFD, ATR, PRO... if it is a disk, then it detects the DOS type: DOS1, DOS2.0, DOS2.5, DOS3, MYDOS, and SPARTA are supported (not DOS XE at the moment) if it is a DOS disk, then it retrieves and display the directory Except for SPARTA and DOS3, the tool then scans all the sectors to try and find hidden directory table (with standard DOS format) all files that don't have a real directory entry, like the erased ones Display the found files with FILE_00.DAT name format The "find file" feature is done by searching in sector chaining. Obviously there is little chance to find a complete file! I've not tested the tools with MYDOS sud-directories as I don't own a disk image file with some. Edited October 22, 2023 by PVbest73 3 Quote Link to comment Share on other sites More sharing options...
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