Recent answers to Booting off new drive, Sync kept all info except for history.https://support.mozilla.org/lt/questions/13647542022-01-18T05:31:41-08:00You can copy places.sqlite from the old profile to transfer the bookmarks and history.
This means yo2022-01-18T05:31:41-08:00cor-elhttps://support.mozilla.org/lt/questions/1364754#answer-1475694<p>You can copy places.sqlite from the old profile to transfer the bookmarks and history.
This means you lose newer bookmarks, so you need to create a JSON bookmarks backup beforehand and restore this backup after you have copied the old places.sqlite.
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<p>You can copy certain files with Firefox closed to the current profile folder to transfer or recover personal data.
Note that best is to avoid copying a full profile folder.
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<ul><li>bookmarks and history: places.sqlite
</li><li>favicons: favicons.sqlite
</li><li>bookmark backups: compressed .jsonlz4 JSON backups in the bookmarkbackups folder
</li><li>cookies.sqlite for the Cookies
</li><li>formhistory.sqlite for saved autocomplete Form Data
</li><li>logins.json (encrypted logins;32+) and key4.db (decryption key;58+) for Passwords saved in the Password Manager<br>key3.db support ended in 73+; to use key3.db in 58-72, make sure to remove key4.db
</li><li>cert9.db (58+) for (intermediate) certificates stored in the Certificate Manager
</li><li>persdict.dat for words added to the spell checker dictionary
</li><li>permissions.sqlite for Permissions and possibly content-prefs.sqlite for other website specific data (Site Preferences)
</li><li>sessionstore.jsonlz4 for open tabs and pinned tabs (see also the sessionstore-backups folder)
</li></ul>So even though all of the bookmarks and passwords save for years the history does not? I still have 2022-01-17T12:35:56-08:00tyrania210https://support.mozilla.org/lt/questions/1364754#answer-1475446<p>So even though all of the bookmarks and passwords save for years the history does not? I still have the same profile on the old hard drive.
</p>There are limitations with Sync for the history:
New history is uploaded for 30 days and history exp2022-01-17T02:48:44-08:00cor-elhttps://support.mozilla.org/lt/questions/1364754#answer-1475221<p>There are limitations with Sync for the history:
New history is uploaded for 30 days and history expires in 60 days, so older history is lost.
</p><pre>HISTORY_TTL:5184000; // 60 days
THIRTY_DAYS_IN_MS:2592000000; // 30 days
MAX_HISTORY_UPLOAD:5000
MAX_HISTORY_DOWNLOAD:5000
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<ul><li><a href="https://searchfox.org/mozilla-release/source/services/sync/modules/constants.js" rel="nofollow">https://searchfox.org/mozilla-release/source/services/sync/modules/constants.js</a>
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<p>Note that Sync isn't designed to be used as a backup, but is merely meant to sync data between connected devices.
Best is always to backup your personal data locally.
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<ul><li><a href="https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles" rel="nofollow">https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles</a>
</li></ul>