On 07/10/2014 02:20 PM, Timothy Murphy wrote:
> I tried dd-ing the ISO onto a USB stick, as suggested in
> <http://wiki.centos.org/Manuals/ReleaseNotes/CentOS7>,
> but it didn't boot.
> Did anyone have better luck with this?
>
I just tried the USB stick method, using the
CentOS-7.0-1406-x86_64-Everything.iso as the media. The command line I
used to copy the iso to the stick was:
ddrescue --force CentOS-7.0-1406-x86_64-Everything.iso /dev/sdb
where /dev/sdb is my USB stick. I use ddrescue simply because it tends
to be faster than dd for large images and it gives a progress display
(and it's in the repos for CentOS 6).
The stick booted just fine into the installer, and while I did the media
verification step I did not proceed to install (it was just a test boot).
The USB stick involved is a low-end PNY 8GB stick, and here is the lsusb
-v output:
Bus 002 Device 007: ID 154b:007a PNY
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x154b PNY
idProduct 0x007a
bcdDevice 11.00
iManufacturer 1 PNY Technologies
iProduct 2 USB 2.0 FD
iSerial 3 AA00000000009494
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk-Only
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 255
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 255
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)
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