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Old 08-27-2025, 12:48 AM   #2
gbm
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Posts: 2,203
Karma: 8888888
Join Date: Jun 2010
Device: Kobo Clara HD,Hisence Sero 7 Pro RIP, Nook STR, jetbook lite
Just how many ebooks do you have on your clara hd? I have 1331 on mine with 5.1GB left.

My suggestion is to delete some ebooks--at least 500 MB--off of you ereader then try to reload your books.

bernie
Quote:
Originally Posted by einkpaladin View Post
First off, I apologize if someone already mentioned this. I've spent the last 20-30 minutes scouring these forums and I can't find one that is quite applicable to this situation.

I also am posting this here because I genuinely don't know what sub-forum to put it since I'm not sure if this is a problem with Calibre, with the KoboTouch plugin, or with the Kobo Clara HD itself.

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The Problem: As the title says, Calibre can't send books to my device, a Kobo Clara HD, because it keeps giving the following error message:


Code:
There is insufficient free space in main memory

Traceback (most recent call last):
  File "calibre/gui2/device.py", line 111, in run
  File "calibre/gui2/device.py", line 662, in _upload_books
  File "calibre/devices/kobo/driver.py", line 2317, in upload_books
  File "calibre/devices/usbms/driver.py", line 319, in upload_books
  File "calibre/devices/usbms/device.py", line 965, in _sanity_check
  File "calibre/devices/utils.py", line 37, in sanity_check
calibre.devices.errors.FreeSpaceError: There is insufficient free space in main memory
But I know my device has plenty of space left, at 194.2 MiB, both according to my desktop computer and the "Device information" page on the Kobo itself.

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More Details
  • Device Model: Kobo Clara HD
  • Software Version: 4.38.23171 (6b370fffff, 10/29/24)
  • Updated Recently?: Yes.
  • Desktop OS: Linux Mint 22.1 Cinnamon
  • Calibre Type: APT, according to the official Linux installation instructions listed under "Binary install" (so not the Flatpak version which I read has an issue with temp file capacities or something like that...
  • Calibre Version: 8.9 [22 Aug, 2025]

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I think I didn't forget any information, but if I did, let me know and I'll try my best.
gbm is offline   Reply With Quote