File conversion error > Poss file issues

[Cheetah2024]

I had some issues with the drives on my computer months ago and deleted the wrong volume while trying to fix partition issues. I realized the mistake immediately and did a data recovery on the drive and it appeared all the files were recovered without issues reported in the recovery program. I used Disk Drill for the data recovery. I recently wanted to add some books to my 6th gen Paperwhite and while trying to convert some MOBI>ePUB I kept getting the same error. (See Below) I get the same error no matter what format I try converting with, all conversions were attempted with default settings. At this point I am afraid my entire library might have been corrupted. I tried the MOBI file Reader without success as well. My primary concern now is trying to fix my files, this is the collection I have been building for 10+ years now. I am unsure how I would get replacement files for any of mine that are corrupt. Thanks in advance for any assistance anyone can provide. I will answer any questions as soon as I can.

Spoiler:

Error Textcalibre, version 7.16.0 (win32, embedded-python: True)
Conversion error: Failed: Convert book 1 of 1 (10 LB Penalty)

Convert book 1 of 1 (10 LB Penalty)
Conversion options changed from defaults:
read_metadata_from_opf: 'C:\\Users\\eric_\\AppData\\Local\\Temp\\calibre_d 99h4yvj\\khtpj9pi.opf'
output_profile: 'kindle_pw3'
verbose: 2
Resolved conversion options
calibre version: 7.16.0
{'add_alt_text_to_img': False,
'asciiize': False,
'author_sort': None,
'authors': None,
'base_font_size': 0.0,
'book_producer': None,
'change_justification': 'original',
'chapter': "//*[((name()='h1' or name()='h2') and re:test(., "
"'\\s*((chapter|book|section|part)\\s+)|((prolog|p rologue|epilogue)(\\s+|$))', "
"'i')) or @class = 'chapter']",
'chapter_mark': 'pagebreak',
'comments': None,
'cover': None,
'debug_pipeline': None,
'dehyphenate': True,
'delete_blank_paragraphs': True,
'disable_font_rescaling': False,
'dont_compress': False,
'duplicate_links_in_toc': False,
'embed_all_fonts': False,
'embed_font_family': None,
'enable_heuristics': False,
'expand_css': False,
'extra_css': None,
'extract_to': None,
'filter_css': '',
'fix_indents': True,
'font_size_mapping': None,
'format_scene_breaks': True,
'html_unwrap_factor': 0.4,
'input_encoding': None,
'input_profile': <calibre.customize.profiles.InputProfile object at 0x00000244878D50D0>,
'insert_blank_line': False,
'insert_blank_line_size': 0.5,
'insert_metadata': False,
'isbn': None,
'italicize_common_cases': True,
'keep_ligatures': False,
'language': None,
'level1_toc': None,
'level2_toc': None,
'level3_toc': None,
'line_height': 0.0,
'linearize_tables': False,
'margin_bottom': 5.0,
'margin_left': 5.0,
'margin_right': 5.0,
'margin_top': 5.0,
'markup_chapter_headings': True,
'max_toc_links': 50,
'minimum_line_height': 120.0,
'mobi_file_type': 'old',
'mobi_ignore_margins': False,
'mobi_keep_original_images': False,
'mobi_toc_at_start': False,
'no_chapters_in_toc': False,
'no_inline_navbars': True,
'no_inline_toc': False,
'output_profile': <calibre.customize.profiles.KindlePaperWhite3Outpu t object at 0x00000244878E4410>,
'page_breaks_before': "//*[name()='h1' or name()='h2']",
'personal_doc': '[PDOC]',
'prefer_author_sort': False,
'prefer_metadata_cover': False,
'pretty_print': False,
'pubdate': None,
'publisher': None,
'rating': None,
'read_metadata_from_opf': 'C:\\Users\\eric_\\AppData\\Local\\Temp\\calibre_d 99h4yvj\\khtpj9pi.opf',
'remove_fake_margins': True,
'remove_first_image': False,
'remove_paragraph_spacing': False,
'remove_paragraph_spacing_indent_size': 1.5,
'renumber_headings': True,
'replace_scene_breaks': '',
'search_replace': '[]',
'series': None,
'series_index': None,
'share_not_sync': False,
'smarten_punctuation': False,
'sr1_replace': None,
'sr1_search': None,
'sr2_replace': None,
'sr2_search': None,
'sr3_replace': None,
'sr3_search': None,
'start_reading_at': None,
'subset_embedded_fonts': False,
'tags': None,
'timestamp': None,
'title': None,
'title_sort': None,
'toc_filter': None,
'toc_threshold': 6,
'toc_title': None,
'transform_css_rules': '[]',
'transform_html_rules': '[]',
'unsmarten_punctuation': False,
'unwrap_lines': True,
'use_auto_toc': False,
'verbose': 2}
InputFormatPlugin: MOBI Input running
on C:\Users\eric_\AppData\Local\Temp\calibre_d99h4yvj \1x3z9je3.mobi
Traceback (most recent call last):
File "calibre\ebooks\conversion\plugins\mobi_input. py", line 28, in convert
File "calibre\ebooks\mobi\reader\mobi6.py", line 98, in __init__
calibre.ebooks.mobi.MobiError: Unknown book type: b'\xd8#\xccD\xbf\x06\x9aW'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "runpy.py", line 198, in _run_module_as_main
File "runpy.py", line 88, in _run_code
File "site.py", line 83, in <module>
File "site.py", line 78, in main
File "site.py", line 50, in run_entry_point
File "calibre\utils\ipc\worker.py", line 215, in main
File "calibre\gui2\convert\gui_conversion.py", line 38, in gui_convert_override
File "calibre\gui2\convert\gui_conversion.py", line 25, in gui_convert
File "calibre\ebooks\conversion\plumber.py", line 1129, in run
File "calibre\customize\conversion.py", line 245, in __call__
File "calibre\ebooks\conversion\plugins\mobi_input. py", line 34, in convert
File "calibre\ebooks\mobi\reader\mobi6.py", line 98, in __init__
calibre.ebooks.mobi.MobiError: Unknown book type: b'\xd8#\xccD\xbf\x06\x9aW'