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Re: [LUG] how to fix read only USB key? [NT] wrong Acer/supermicro boot bios

 

On 6 Jun 2015, at 19:23, bad apple <mr.meowski@xxxxxxxx> wrote:

> On 06/06/15 11:20, jay bennie wrote:
>> type df to check nothing magic happened and the usb should not be mounted. 
>> 
>> go back to cfdisk or fdisk /dev/sdXY
>> 
>> create 1 partition the full size of the disk
>> 
>> write it 
>> 
>> reboot (keep disk in machine) 
> 
> Reboots are for the weak...
> 
> sudo sync
> sudo eject /dev/sdXY
> re-plug it
> keep calm and carry on following the otherwise excellent instructions

arrgh! - you got me :) 

> 
> You have almost definitely uncovered a flaw in a poor quality USB drive
> though - I would simply throw it away unless it's an expensive or
> unusually high capacity drive still in warranty. You're just going to
> keep having problems with it I suspect. Is it by any chance a cheap
> class C silicon edge-of-the-wafer bit of NAND flash in a Chinese plastic
> case? There's a reason why those 256Gb USB3 sticks on Ebay only cost
> £8.99...
> 

Funny sitting here trying to apply the bios recovery of last resort  (AMI => power 
up +crtl + home => led falsh =>no beep => wait some more => sigh! ) on a Acer / 
Supermicro server board X8DTU ....using a cheap usb and thinking that may be a 
problem, but not the problem.  

Anyone know how (and would be able to) rewrite it's EEPROM chip? My cheap flash says 
no, and fear the bios is FUBAR.  

ps. the system boots but no kb or display, but will beep if no ram, so i'm assuming 
the load stage is working as it will seek the USB. I've used a combination of rom 
names 

> Cheers
> 
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