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Old 01-23-2005, 10:37 AM   #1
LQ Newbie
Registered: Dec 2003
Distribution: FC 1
Posts: 13

Rep: Reputation: 0
HD problem installing Fedora - "assertion failed"


I installed win98 over FC3. Unfortunalely now I am not only unable to access my linux files through rescue disc (it does not see any linux partitions even though there are - or were swap, home and system partitions (+win partition and some free space)) but also find it impossible to install Fc3 once again without removing all existing partitions. At least that is what installation program says.

Error message goes as follows:
"Assertion (heads > 0) at disk_dos.c:485 in fukction probe_partition_for_geom() failed"

and then

"The partition table on device hda is unreadable. To create new partitions it must be initialized, causing the loss of all data on this drive".

What can I do about it? Is it possoble to install FC without erasing all data? If not, how ca I make some backup? I am going to try Knoppix type (Live) linux and access my files this way but in case this does not work - any other ideas?


Old 02-24-2005, 09:45 PM   #2
Registered: Apr 2002
Location: St. Paul, Minnesota
Distribution: UbuntuStudio, Ubuntu
Posts: 357

Rep: Reputation: 31

See "additonal comment 2" - ignore the naysayer at comment 5, who obviously had an actual hardware issue.


Can you try the update image at and see if that helps?

(Instructions for using an update disk are available at

It wasn't that difficult - and I got the install done flawlessly.


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