How to expand the storage memory on the Yún

Hello all - I am a newbee to the Yun and I am having difficulties expanding the storage memory. I have followed the tutorial, but keep getting various errors. When I load the YunDiskSpaceExpander.ino and walk through the prompts, sometimes I get the message "The micro SD card is not available." Other times I make it through creation of partitions and loading software to the SD card, but then at reboot with YUN RST button, I get error about unable to mount /dev/sda2.

Currently I am stuck at the "...micro SD card is not available" error.

I am using a 2GB SanDisk MicroSD Card and have tried two different cards.

Any ideas?

I got beyond the "... SD card not available" message and this is what I get when I reboot with YUN RST:

Press the [f] key and hit [enter] to enter failsafe mode

  • regular preinit -
    [ 9.600000] JFFS2 notice: (527) jffs2_build_xattr_subsystem: complete building xattr subsystem, 1 of xdatum (1 unchecked, 0 orphan) and 11 of xref (0 dead, 0 orphan) found.
    [ 11.380000] sd 0:0:0:0: [sda] 3899392 512-byte logical blocks: (1.99 GB/1.85 GiB)
    [ 11.380000] sd 0:0:0:0: [sda] Write Protect is off
    [ 11.390000] sd 0:0:0:0: [sda] No Caching mode page present
    [ 11.390000] sd 0:0:0:0: [sda] Assuming drive cache: write through
    [ 11.390000] sd 0:0:0:0: [sda] No Caching mode page present
    [ 11.400000] sd 0:0:0:0: [sda] Assuming drive cache: write through
    [ 11.400000] sda: sda1 sda2
    [ 11.410000] sd 0:0:0:0: [sda] No Caching mode page present
    [ 11.410000] sd 0:0:0:0: [sda] Assuming drive cache: write through
    [ 11.410000] sd 0:0:0:0: [sda] Attached SCSI removable disk
    [ 31.930000] EXT4-fs (sda2): ext4_check_descriptors: Block bitmap for group 0 not in group (block 4294967295)!
    [ 31.930000] EXT4-fs (sda2): group descriptors corrupted!
    mount: mounting /dev/sda2 on /overlay failed: Invalid argument
    switching to jffs2
  • init -

Any ideas here?

Thanks!