can't save screenshots to rEFind USB key

[kent]

I'm using a old 256MB flashdrive as a rEFind USB key. I created it by dd-ing the refind-flashdrive-0.8.3.img file (extracted from the refind-flashdrive-0.8.3.zip download) to it.

It boots my system just fine.

I would like to be able to use the F10 key to save some screenshots, it creates a screenshot_001.bmp file, but it's 0 bytes in size.

$ ls -l /media/ElTorito/
total 1592
drwx------ 3 kent kent 2048 Jul 6 12:31 EFI
-rw------- 1 kent kent 0 Aug 8 09:29 screenshot_001.bmp
-rw------- 1 kent kent 683904 Jul 6 12:31 shellia32.efi
-rw------- 1 kent kent 943552 Jul 6 12:31 shellx64.efi

I suspect the reason the screenshot isn't getting saved is because the EFI partition on the usb key is too small. It's approx. 4.5M and the bmp image is probably quite a bit larger than that.

$ sudo lsblk -lno NAME,LABEL,UUID,SIZE,FSTYPE,TYPE,MOUNTPOINT
sdc 250M disk
sdc1 ElTorito 9D89-1D22 4.5M vfat part /media/ElTorito

The df command shows it to be even smaller, and shows only 502K available

$ df -h /dev/sdc1
Filesystem Size Used Avail Use% Mounted on
/dev/sdc1 3.5M 3.0M 502K 86% /media/ElTorito

Is it possible to resize the EFI partition? I tried using gparted. After using gparted the lsblk command listed sdc1 as 200M in size, but the df command still shows what's shown above.

[Roderick W. Smith]

I recommend you simply copy all the files off the rEFInd flash drive, create a fresh partition table and a big enough FAT partition (marked as type EF00 in gdisk or with its "boot flag" set in parted or GParted), and copy the files back.