help! installing rockbox. stuck.

[slow diver]

i'm on the step where you make a backup of the ipod's firmware.  when i run the command "ipodpatcher 1 -r bootpartition.bin", it puts a 40 mb .bin file, when it should be giving me an 80 mb one.  

in the dos command thing, i get:



that error screws up the rest of the installation.

i need lossless!!!!

[slow diver]

sorry admin, i was in such a rush that i neglected to scroll down for the installation forum.

[vodka-online]

hi. I have the same problem:

C:\rockbox>ipodpatcher 8 -r bootpartition.bin
ipodpatcher v0.5 - (C) Dave Chapman 2006
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

[INFO] Reading partition table from \\.\PhysicalDrive8
[INFO] Sector size is 2048 bytes
[INFO] Part    Start Sector    End Sector   Size (MB)   Type
[INFO]    0              63         48194        94.0   Empty (0x00)
[INFO]    1           48195      14651279     28521.7   W95 FAT32 (0x0b)
[INFO] Ipod model: Video (aka 5th Generation)
[INFO] Seeking to sector 63
[INFO] Writing 48132 sectors to output file
 Error reading from disk: ╟ряЁюё эх с√ы т√яюыэхэ шч-чр ю°шсъш Ñ‚Ñ‚ÑŽÑ„Ñ€/т√тюфр эр єё
ЄЁющёЄтх.
[ERR]  write in disk_read: Invalid argument
[ERR]  --read-partition failed.

but bootpartition.bin is empty.
please link solving of this problem.

ADDED:
ive fixed it. a long usb cable was cause of this bug