cisco 6509 catos - remove deleted file from flash

I'm trying to remove a file from flash and get this message Squeeze device flash failed (unknown device)

Is this a hardware failure or is there anything else i can try?

Console> (enable) show flash
-#- ED --type-- --crc--- -seek-- nlen -length- -----date/time------ name
  1 .D ffffffff 5fd7b46a  6431f0   21  6304109 Sep 22 2000 08:01:02 cat6000-sup.
  2 .. ffffffff 1be77d1b  eb54cc   22  8856156 Aug 02 2005 10:25:20 cat6000-sup_

830260 bytes available (15160524 bytes used)
Console> (enable) squeeze flash:

All deleted files will be removed, proceed (y/n) [n]? y

Squeeze operation may take a while, proceed (y/n) [n]? y

Squeeze device flash failed (unknown device)
Console> (enable)
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Yeah, I can imagine you'd want to get rid of CatOS 5.5.  :)

Have you tried saving the other image somewhere safe, then formating the flash, then copying it back?  Do you have another flash card you could swap in for troubleshooting purposes?

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CatOS should be able to give you the options if you enter "squeeze ?"
Squeeze applys to a device so it should be

squeeze bootflash:
squeeze slot0:
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