config.txt: Update documented max ramdisk size - #4321
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The Raspberry Pi 4 firmware release notes state that this limit [was bumped to 128MB in 2022][1]: > Increase the max ramdisk size to 128MB Note that it might be more appropriate to remove this bulletpoint entirely, I couldn't find whether this limit actually applies to Raspberry Pi 5... but from testing I was able to boot a 160MB ramdisk file without issues: ``` 9.15 Loading boot.img ... 16.41 Read boot.img bytes 167772160 hnd 0x6070 16.75 MBR: 0x00000000, 328608 type: 0x0c 16.75 MBR: 0x00000000, 0 type: 0x00 16.76 MBR: 0x00000000, 0 type: 0x00 16.76 MBR: 0x00000000, 0 type: 0x00 16.69 Trying partition: 0 16.71 type: 32 lba: 0 'MTOO4049' ' bootfs ' clusters 81825 (4) 16.77 rsc 32 fat-sectors 638 root dir cluster 2 sectors 0 entries 0 ... ``` So it's possible this limit has been entirely removed? Would be nice to have this confirmed if so. But in the absence of official confirmation, documenting a 128MB limit seems more accurate either way. [1]: https://github.com/raspberrypi/rpi-eeprom/blob/master/firmware-2711/release-notes.md#2022-03-10---promote-the-2022-03-10-beta-release-to-lateststable
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@brooswajne Thank you for your contribution. We'll work on getting this change published if appropriate. @timg236 Can you advise on this one? Cheers! |
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I think the limit on Pi5 is 180MB |
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The Raspberry Pi 4 firmware release notes state that this limit was bumped to 128MB in 2022:
Note that it might be more appropriate to remove this bulletpoint entirely, I couldn't find whether this limit actually applies to Raspberry Pi 5... but from testing I was able to boot a 160MB ramdisk file without issues:
So it's possible this limit has been entirely removed? Would be nice to have this confirmed if so. But in the absence of official confirmation, documenting a 128MB limit seems more accurate either way.