21" iMac Windows sometimes won't boot issue.

Joined
Mar 2, 2010
Messages
76
Reaction score
2
Points
8
Location
New Zealand
I am looking after an environment of about 40 21" iMacs setup to dual boot either OSX or XP.
This works perfectly almost everytime on every machine except 3 or 4.
The problem machines work mostly but every now and then (perhaps 25% of the time) they will stall while trying to boot XP, either on the gray initial screen or with an error message just after the white blinking cursor.
Normally a power cycle fixes this.
I have tried everything right back to clearing the PRAM, wiping the HDD and reinstalling and configuring both OS partitions, but to no avail.
OSX works perfectly on the affected machines its only XP that has the issues.
Have tried a number or ways of the selecting the OS from holding down ALT to Bootpicker or Refit, always with the same inconsistent results and always only a problem on the same few machines.

Any ideas...
 

chscag

Well-known member
Staff member
Admin
Joined
Jan 23, 2008
Messages
65,247
Reaction score
1,834
Points
113
Location
Keller, Texas
Your Mac's Specs
2017 27" iMac, 10.5" iPad Pro, iPhone 8, iPhone 11, iPhone 12 Mini, Numerous iPods, Monterey
I don't have a solution for you but on my machine, dual booting between Snow Leopard and Windows 7, I'll get a bad boot to Windows 7 every once in awhile.
It corrects itself on a reboot. I have no idea what causes it. Gremlins ? :eek:

Regards.
 
OP
B
Joined
Mar 2, 2010
Messages
76
Reaction score
2
Points
8
Location
New Zealand
Yes its very odd and only affects approximately 10% of machines, the other 90% are very reliable in this regard.
 

Shop Amazon


Shop for your Apple, Mac, iPhone and other computer products on Amazon.
We are a participant in the Amazon Services LLC Associates Program, an affiliate program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
Top